42.6
Error code description:
Faulty water flow or flow detection on valve Y14 clean to control box.
Condition for error detection:
Valve Y14 clean to the control box is actuated, but the CDS sensor measures no/insufficient water flow.
Error area:
Relevant causes/components
42.4
Error code description:
Faulty water flow or flow detection on valve Y4 to the care container.
Condition for error detection:
Valve Y4 to the care container is actuated, but the CDS sensor measures no/insufficient water flow.
Error area:
Water supply, Care container + supply line, Water flow detection (CDS)
Relevant causes/components:
42.5
Error code description:
Malfunction of Climate control.
Conditions for error:.
Insufficient air flow throuhgh Clima valve.
Error area:
Clima control
Relevant causes;
42.2
Error code description:
Faulty water flow or flow detection via valve Y2 to control solenoid.
Condition for error detection:
Valve Y2 to the control box is actuated, but the CDS sensor measures no/insufficient water flow.
Error area:
Relevant causes/components:
42.3
Error code description:
Faulty water flow or flow detection on valve Y3 to moistening.
Condition for error detection:
Valve Y3 for moistening is actuated, but the CDS sensor measures no/insufficient water flow.
Error area: * Water supply, (Isolated?) * Moistening, (Nozzle blocked?) * Water flow detection. (CDS)
Relevant causes/components: * Water supply * Moistening pipe/ moistening nozzle/plastic pipe * Solenoid valve block with CDS sensor * Electrical connection to components * Incorrect CDS pulse saved (Should be 1350)
42.1
Error code description:
Malfunction when filling the steam generator.
Condition for error detection:
Level electrode does not detect a full water level and the CDS sensor has also detected no/insufficient flow even though filling of the steam generator is anticipated.
Error area:
Relevant causes/components:
42
iCombi Pro iCombi Classic. Solenoid valves: Possible malfunction
Y1 - Steam generator filling, Service 42.1 / E42.1
Y2 - Control box. Service 42.2 / E42.2
Y3 - Moistening. Service 42.3 / E42.3
Y4 - Care. Service 42.4 / E42.4
Y5 / Y15 - Clima valves. Service 42.5 / E42.5
Y14 - Clean. Service 42.16 / E42.6
See Troubleshooting Manual pages 68 to 74
13
Check level electrode.
28.4
Error code description:
The temperature limit of +2°C [36°F] of temperature sensor B5 in the steam generator has been un-dershot and only hot air operation is possible. This serves as frost protection as water routes can potentially be frozen.
Condition for error detection:
A temperature of less than +2°C [36°F] was measured by temperature sensor B5 in the steam generator and the unit can only be operated with all functions again when the measured temperature rises above +4°C [39°F].
Error area: Ambient temperature too cold.
Relevant causes/components:
Ambient temperature of the unit below +2°C [36°F]
28.1
Condition for error detection:
A temperature above 170°C [338°F] was measured in the steam generator.
To protect the unit from damage due to overtemperature, the unit cannot be operated again until the temperature sensor B5 has cooled below 120°C [248°F].
Error area: * Steam heating system * SSR
Relevant causes/components * Level electrode * Calcified/soiled steam generator * Malfunction steam heating system * Software error
28
An incorrect temperature value is measured on one of the temperature sensors B1 and B5.
28.1 B1 thermocouple senses temp too high
28.2 B5 thermocouple sense temertaure too high
28.4 B5 thermocouple sesnes temp too low
For details of condition for: * Error detection: * Error area: * Relevant causes/components:
Go to Troubleshooting manual, pages 24 to 26
20
Error code description:
An incorrect temperature value is measured on one of the temperature sensors B1, B2, B4, B5, B9, B10, B15.
(B1 -, Cooking cabinet) Service 20.1
(B2 - Control box ) Service 20.2
(B4 - Humidity) Service 20.4
(B5 - Steam generator) Service 20.8
(B9 - Cooking cabinet bottom - Floor unit) Service 20.16
(B10 - iCombi Pro / iCombi Classic XS - Installation area) Service 20.32
(B15 - iCombi Pro - Autodose) Service 20.64
For details of :
Condition for error detection: Error area: Relevant causes/components:
Go to Troubleshooting manual, pages 13 to 20
20.8
Error code description:
An incorrect temperature value is measured at temperature sensor B5 steam generator.
Condition for error detection
The combi-steamer checks the temperature of temperature sensor B5 every second (in all modes).
As soon as an implausible temperature value is measured on the temperature sensor B5 steam generator, a service error is triggered.
Error area:
Temperature sensor B5 steam generator, electrical connection
Relevant causes/components:
The unit features an integrated p-trap (syphon). In case the drain connec-ted to the unit is also having a p-trap (this might be invisible in the floor), theconnected drain must be vented via a T-piece. Failing to do so will result in anoverflow from the emergency drain
See video Library "Drain Connection iCombi" Watch Video/Animation
Dis-/mounting the control panelThe procedures for▪ dismounting, parking and mounting back the control panel▪ opening the cover of the control panel to access the A12 CPU pcbare absolute identical with those described under the iCombi Pro chapters
See videos in Video Library:
"Cover of the CPU dismounting" Watch Video/Animation
"Display dismounting" Watch Video/Animation
"Display mounting" Watch Video/Animation
The lifting cylinder is used to perform the AutoLift function (lowering the lid withthe suspended baskets). This is connected to the cover lever by a pressure spring.By retracting the thrust rod of the pan motor, the lid is lowered to the AutoLiftposition.
When the lifting cylinder motor extends the thrust rod, the pan will lift. The fully up position of the pan is reached when the thrust rod is at its fully extended position which is controlled by a limit switch within the lifting cylinder.
When the lifting cylinder retracts the thrust rod, the pan lowers. The pan down position is controlled by a limit switch which is actuated by the thrust rod in the pan down position.
PLEASE NOTE THAT THE THRUST ROD IS NOT FULLY RETRACTED WHEN THE PAN IS IN ITS FULLY DOWN POSITION.
When the AutoLift is actuated, the cylinder motor continues to retract the thrust rod. and as the pan in its down position cannot move the whole cylinder motor moves toward the front of the machine pulling the lid down via the cover lever. The lid down position is controlled by an internal limit switch within the lifting cylinder.
The switch S23 or S29 (right side) then stops the panmovement.
S23 stops the left hand pan downward movement. S29 stops the right hand downward movement
Cover right top
Right hand lid / Lid up limit switch
Pan right bottom
Right hand pan / Pan down limit switch
Cover left top
Left hand lid / Lid up limit switch
Pan left bottom
Left hand pan / Pan down limit switch
Dismounting the control panel with units 6-1/1 to 20-2/1
See videos in Video Library:
"Cover of the CPU dismounting" Watch Video/Animation
"Display dismounting" Watch Video/Animation
"Display mounting" Watch Video/Animation
Above boiling point: Steam addition is controlled by three parameters:▪ The output signal of the differential pressure sensor P1,▪ the temperature at thermocouple "humidity" B4 and▪ the rotational speeds and rotational directions of the fan motors M1, M16, M22
Humidity control is achieved through monitoring the negative pressure differential behind the top fan wheel , between the centre and periphery of the fan. The pressure differential behind the fan varies as the atmosphere in the cook chamber varies.
Generally:
The less humid, the higher the voltage of P1
The higher the fan rpm, the higher the voltage of P1
During the calibration process the CPU is educated with specific voltages from the P1 pressure switch for known fan speeds, temperature and humidity.
The Fan motor inverter sends fan speed data to the CPU through the Bus system.
B4 (Humidity) Thermocouple connected to terminal X5 on the A10 I/O board and situated behind the top fan (secured on the outside of the oven liner) measures the air temp behind the fan and sends this data to the CPU from A10 via the Bus system. *
P1 pressure sensor connected to terminal X1 on the A10 I/O board measures the differential pressure across the back of the fan wheel, converts the pressure reading to a voltage and delivers the results to the CPU from A10 via the Bus system, where they are stored both in the CPU and on the SD card (iCombi Pro) and External Eprom (iCombi Classic). These clearly defined reference voltages, created during the calibration process and stored in the CPU, enable the iCombi to create any specific climate requested by the chef.
Example: 160 degrees C – 60% humidity – Fan speed 1000 rpm
The processor will ensure a fan speed of 1000 rpm via the communication with the fan motor inverter, via the bus system.
Y5 humidity valve is closed, and heat is applied via the hot air heating elements or Gas heat exchanger, to 160 deg C. Communicated to the CPU by B4 thermocouple via A10 and the Bus system.
Humidity is delivered to the chamber via the steam generator and pressure sensor P1 monitors the changing negative differential pressure behind the fan until a predetermined value calculated from data stored during the calibration process is reached.
If the signal from P1 pressure sensor overruns the predetermined value, the steam generator will shut down, Y5 Humidity valve will open and negative pressure behind the fan wheel will draw ambient air into the oven pushing humidity down into the control box and out through the vent stack..
As this occurs the P1 sensor voltage signal will indicate the reduction in humidity, Y5 will close again ad the steam generator will start again.
The difference with steam control is that the chef can select a value for the cooking cabinet humidity below steam sat-uration, for example 70 %.
To be clear!
"The difference between Steam Control and Humidity control is that with Humidity control, the chef can select a value for cabinet humidity below the steam saturation point, for example 70 %".
Determination of the boiling point temperature
Steam saturation" is when the cabinet metalwork has reached the temperature of the generated steam and no further condensation is taking place on the cabinet metalwork. When steam saturation occurs in the oven cabinet, generated steam enters the control box and raises the temp of control thermocouple B2 (Formerly known as the Quench thermocouple).
Humidity Thermocouple B4 is clamped to the oven side panel immediately behind the circulation fan.
B1 thermocouple is situated in the oven chamber top left hand corner.
For reference:
The Kelvin scale is based on absolute zero.
0 Kelvin equates to -273.15 Deg C 0 Deg C equates to 273.15 Kelvin 1 Deg C equates to 274.15 Kelvin
In other words when comparing deviations in temperature 1 K = 1 Deg C, therefore 3 K = 3 Deg C
In the "Steam" operating mode, 100% cooking cabinet humidity is always the target (steam saturation). This percent-age of 100% cannot be changed on the display.
"Steam saturation" is when the cabinet metalwork has reached the temperature of the generated steam and no further condensation is taking place on the cabinet metalwork or indeed the medium to be cooked. The temperature at which steam saturation occurs varies dependant upon altitude and is determined by B1 cabinet thermocouple and B2 contorl Thermocoupole.
See page 155 - Reference 20.6.3
“Service 29”
CPU Temperature too high (Greater than 75 degrees C - 167 degrees F.
(PWM)
Pulse Width Modulation
The cooling fan is powered by a constant 12Vdc. The voltage never changes, however, by turning the power off and on, we can modulate (adjust) the speed of the fan.
The frequency at which the power is turned on and off is way too quick for humans to tell the difference, so we don’t see the fan going on and off. We just see it smoothly ramping up and down.
The amount of time the power supply is on compared to the amount of time off is known as a “Duty Cycle”.
If the PWM signal tells a fan to turn off as often as it tells it to turn off, that would be a 50% Duty Cycle and the fan would run at 50% of its full speed
Four different types of eSTL are used with four different temperature sensors. The eSTLs can be identified and differ-entiated easily by its colored stickers (green, blue, white, yellow)
Each iCombi model has individual power requirements in respect of element sizes (Electric ovens) and burner Kw output (Gas ovens).
For this reason each model requires an ESTL suitable for the power outputs of the heating systems and the proximity of sensors to the heat source.
Therefore (as SCCWE and previous models) there is a range of ESTLs designed to match the requirements of specific models..
Actuating temperatures:
Blue label: 183 deg C Steam / 430 deg C Hot air
Yellow label: 157 deg C Steam / 430 deg C Hot air
Green label: 183 deg C Steam / 450 deg C Hot air
White label: (20-2/1 E only)
430 deg C Hot air middle / 400 deg C Hot air Bottom
Each temperature sensor is connected to a four-pin connector of a cable that is part of the cable harness (W17 in thecircuit diagrams). It must be assured that the connections from the temperature sensor to the eSTL and from the eSTLto the A10 I/O pcb are correct and tight and no contact resistances can falsify the measurement.
Remember the PT1000 probes operate at mains voltage, so do not unplug or reconnect PT 1000 probes whilst the oven is connected to mains power !
If plug connections between the PT1000 probes and the ESTL are loose, the potential for high resistance joints increases.
Additional resistance in the circuit will change the ESTLs understanding of the actual temperature at the required point of sensing and can actually promote incorrect Service / Error 72 indications.
An eSTL gets an input signal “L1” and should give an expected output signal “L*”. In case one of the temperaturesensors reaches a temperature beyond the programmed limit, the output signal L* is disabled and a LED error code isgenerated to detect the reason for tripping. Also main contactor K1 is deactivated in this case
The input to L1 on the ESTL comes from the A10 I/O PCB Terminal X22 pin number 1 (marked with an arrow on the pcb). This is the 240V output from A10 to the safety chain.
The output from the ESTL (Terminal L*) terminates on connection A1 of the K1 contactor coil, thus potentially switching K1 on or off. Dependent of course upon the condition of the safety chain.
At the same time the output from the ESTL (Terminal L*) also returns to pin 3 of A10 terminal X22 to signal to A10 the condition of the safety chain, enabling the processor to provide appropriate indications of safety chain status. (Service 72 or Error 72).
Where two ESTLs are employed (20-2/1E models) the output terminal L* on the first ESTL is connected directly to the input terminal L1 on the second ESTL thus connecting their outputs in series, meaning both ESTL ouputs must be closed for the K1 contactor to energise.
See section 24 of the training manual for electrical wiring diagrams - commencing page 181.
Each temperature sensor has two measuring points internally (PT1000 resistances). The difference between bothmeasurements shall not be higher than 30 K; otherwise you get a sensor logic failure
Each PT1000 (Platinum1000 ohm Temperature Resistance probe) has 4 wires (2 red and 2 white).
At 0 degrees C the resistance measured across the two red wires and the two white wires, should be equal at 1000 ohms .
A standard PT1000 chart for resistance against temperature can be found by following this link.
https://www.sterlingsensors.co.uk/pt1000-resistance-table
As the temperature being measured by the PT 1000 probe changes so should the resistance of each measuring element change in equal proportion.
If the measured values of each resistor in a PT1000 probe vary by 106 ohms at 100 degrees C or 116 ohms at 300 degrees C (equivalent to 30 Kelvin at either temperature) the ESTL will indicate an "out of logic" error.
Netzfrequenz nicht erkannt
Mains frequency not detected
Communication-Error mit STM32
Communications error with STM32
STM32 is a family of 32-bit microcontroller integrated circuits
Störung kapazitive Taste
Capactive button malfunction.
Falschanschluß-Erkennung High-Limit
False connection detection - High Limit
Falschanschluß-Erkennung Low-Limit
False connection detection Low limit
X1: P1 Pressure sensor
The sole function of pressure sensor P1 is to continuously measure the differential pressure from the top motor drive shaft to the periphery of the top fan blade.
Differential Pressure across the fan varies with changes in fan motor speed and direction, cabinet air temperature and cabinet air humidity
In order to record accurate pressure readings P1 must be mounted horizontaly.
P1 is powered with 12 Vdc from pcb A10, terminal X1, pins 1 & 3.
The pressure readings are sampled via two tubes, one situated at the motor shaft, the other at the periphery of the fan blade.
The difference between these negative pressures is measured and converted in the P1 pressure sensor to a dc voltage.
When the fan wheel is stationary a dc voltage between 0.45 and 0.55 V is delivered to the A10 pcb terminal X1, pin 2.
This voltage can be checked physically by appropriate meter and probes but also in:
ICC Service menu - Diagnostic
Training manual page 226 Chapter 26.4.1 Service chapter Diagnostic
.
In case of a change of the A11 CPU pcb the external memory must be removed from the old pcb and installed in thenew pcb. Neither a new self test must be performed in this case nor a determination of the steam generator volumes
When the A11 CPU is replaced it requires loading with the correct operating software as it is supplied without software.
This is because the spare part number 42.00.251P is used both in Ivario Pro and iCombi Pro control panels.
To upload software, simply replace the CPU ensuring the SD card is transferred from the old CPU to the new CPU and complete a forced update by ensuring the oven is switched off (K1 de-energised), inserting the software USB into the USB interface, before switching the oven on at the control panel, whilst pushing and holding the selector dial down until an image is seen on the display.
Once the update is completed, check that the serial number is present on the machine in Service Level and also that calibration values are present.
To switch off the unit, press and hold the on/off button until the LED lights orange. You will be asked whether youreally want to switch off the unit or not. Pressing “yes” will trigger the switch off process
Please note: When the on/off switch LED illuminates amber, immediately release the on/off switch.
Failure to do so will result in the LED blinking amber/green/amber/green continuously and the machine will not switch off.
A facility existst in Basic Settings" to enable a forced shutdown.
When selected it is possible to overide the controlled shutdown by pressing the on/off button 3 times in succession.
See Video Library "iComb Pro switch off procedure"
A11 CPU pcb
Remember when changing A11 CPU PCB that the part number 42.00.251P is used both in iCombi Pro and iVario Pro control panels. This means it comes without sofware.
Software must therefore be loaded by the technician.
To upload software to the CPU, make sure the SD card is tranferred from the old CPU and complete a forced update using Rational USB stick 2.0 (Black tip) as detailed in the training manual, page 19 "Special process".
Once the update is completed, check that the serial number is present on the machine in Service Level and also that calibration values are present.
The password to enter the service menu for technicians is “TECLEVEL”
It is no longer possible to enter the iCombi Classic Service menu unless you have downloaded the Rational PIN Creator App and have a valid log in and password.
Attempts to enter the Service Menu will generate a QR code on the screen.
Scanning the QR code with the Rational PIN Creator app will generate a PIN which if used on the screen will enable entry to the Service Menu for technicians.
See Video Library "Access to Service menu for Technicians"
If you have undergone technical training by Rational UK or its approved training partners you can obtain a log in and password from Rational UK.
The new software version is being displayed and you are asked to either initiate the update (green tick) or deny it(red cross)
This step no longer existst. When a software stick with apprpriate software is connected to the USB interface of an iCombi Classic the software is immediately taken in. The remainder of the process is as detailed in the manual.
Where to get the software for the units?▪ The software for all units iCombi Pro and iCombi Classic is available via the “RATIONAL Loader” system.▪ Having a valid login to the RATIONAL portal, you can download the RATIONAL Loader application. This makes iteasy to search for the latest software version and download it to the USB stick.▪ If you have no login to the RATIONAL portal but internet access use an original RATIONAL USB stick that containsthe RATIONAL Loader application. That will enable you to request and get the latest software package from theRATIONAL Loader server.
87.01.757 is the part number for the Rational USB memory stick, required to download iCombi operating software.
The Rational Loader is installed on this USB stick, as supplied by Rational via your preferred spare parts supplier.
Simply connect your computer to the internet and insert 87.01.757 USB stick into the apprpriate port.
Open the folder and click on the "iCombi Loader" to connect to the Rational Portal.
The latest combined iCombi Pro and Classic software will be enabled for download to the USB stick.
The "iCombi Loader" remains on the USB stick for future use when updating to the latest software.
To Update the USB stick to latest software, simply follow the same procedure and the Rational Portal will interrogate the USB stick and advise if the software contained on it requires updating.
If it does the latest software is offered for download.
Special processThis process may be needed in some specific cases, e.g. if the I/O pcb needs an update. RATIONAL will inform youseparately on such cases.▪ Switch the unit off.▪ Connect an original RATIONAL USB stick 2.0 (important!) containing the software to the USB interface of the unit.▪ Press the central dial and keep it pressed while switching on the unit.▪ Only when the update screen (with a progress bar and a percent figure) comes up release the central dial.▪ The update is ongoing - do not switch off the unit during this process!▪ At the end of the update you will be prompted to disconnect the USB stick.▪ As soon as you disconnect the USB stick the unit will boot.▪ The start screen appears.
Known as Forced Update!
Additional example!
When the A11 CPU is replaced it requires loading with the correct operating software as it is supplied without software.
This is because the CPU, part number 42.00.251P, is used both in iVario Pro and iCombi Pro control panels.
To upload software to the CPU, make sure the SD card is tranferred from the old CPU and complete a forced update using Rational USB stick 2.0 (Black tip) as detailed in the manual.
Once the update is completed, check that the serial number is present on the machine in Service Level and also that calibration values are present.
▪ LED D5001 (rd): Error▪ LED D2008 (gn): 12V input from the A10 ok; if this LED is off, check the status of D8001 on the A10 and the pos-sible causes listed in that chapter
Even though the green LED D2008 is on and the red LED D5001 is off, a potential error is possible on the CPU if the control panel display is not showing.
To check, simply insert an apprpriate USB stick into the USB port and confirm that the USB LED illuminates. If it does then the display may be at fault, if it does not, replace the CPU prior to replacing the display
SC pump
The sole purpose of the SC Pump (Steam generator Self Cleaning pump) is to empty the steam generator.
In Basic settings:
The length of time the pump is required to run to empty the steam generator can be adjusted. (Normally set at 45 seconds)
The amount of time since the last Self Clean Automatic is recorded.for reference purposes.
The Self cleaning maximum interval time can be set (Normally 7,200 seconds (2 hours)).
The pumps operational functionality (XS ovens only) can be set between Continuous running or Pulsing
CDS sensor
The CDS (Calcium Diagnostic Sensor) S11 is a hall sensor device, sensing movement of water though any of the five solenoid valves in the 5 port valve block.
In Basic Settings the number of pulses per litre can be adjusted.
Must be set at 1350 pulses per litre for 6-1/1 to 20-2/1
Must be set at 1000 pulses per litre for 6-2/3 (XS model)
The CDS sensor is connected to the A10 I/O board at connection X15 and when water is flowing, measures the volume by sending electrical pulses via the A10 I/O board through the bus system (Data Highway) to the main processor (A11).
The CDS provides a preset number of pulses for each litre of water passing through the valve block.
The processor (A11) uses this information to confirm:
a) That any specific valve is in fact working by sending a signal to open the valve and then waiting for pulses to appear from the CDS sensor as in confirmation that the valve has in fact opened.
b) The volume of water stored in the steam tank each time the SC Automaitic system operates..
Tab “Module test”The idea behind this tab type is to test all components that are involved in a technical process within the selectedlauncher area.
Certain Launcher screens have "Module test" facilities which aid as a diagnostic tool by running specific processes and providing either confirmation that the system is fully functioning or indicating via service error codes which components may be faulty.
Tab “Basic settings”Note: As soon as a basic setting is changed via the display, it is stored in the system and immediately active. A restartof the unit is not necessary
Basic settings on SCCWE required a machine to be switched off at the on/off button to confirm any changes.
iCombi Pro basic setting changes are active as soon as they are changed. It is no longer necessary to switch thje machine off and back on again to confirm the changes.
Tab “Diagnostic”This tab type is foreseen to observe technical parameters like RPMs of a fan motor or temperatures from a thermo-couple “live” during a running process.
The diagnostic tab enables you to see real time functionality such as activation of components like door switch, level probe, fan motor speeds etc.
34.32
Error code description:
Faulty data communication to automatic ignition controller.
Condition for error detection:
BUS signal from automatic ignition controller is missing or is not transmitted for at least 5 seconds at a time.
Error area:
Data transfer cable, automatic ignition controller.
Relevant causes/components:
34.16
Error code description:
Faulty data communication to the I/O board.
Condition for error detection:
BUS signal from I/O board is missing or is not transmitted for at least 5 seconds at a time.
Error area:
Data transfer cable, I/O board
Relevant causes/components:
34.8
Error code description:
Faulty data communication to pump PCB.
Condition for error detection:
BUS signal from pump PCB is missing or is not transmitted for at least 5 seconds at a time.
Error area:
Data transfer cable, pump PCB
Relevant causes/components:
34.4
Error code description:
Faulty data communication to bottom fan motor.
Condition for error detection:
BUS signal from bottom fan motor is missing or is not transmitted for at least 5 seconds at a time.
Error area:
Data transfer cable, control electronics for bottom fan motor
Relevant causes/components:
Communication-Error mit STM32
Communications error with STM32
STM32 is a family of 32-bit microcontroller integrated circuits
34.2
Error code description:
Faulty data communication to the middle fan motor on floor units and the bottom fan motor on 10 tray table top units.
Condition for error detection:
BUS signal from middle fan motor on floor units and the bottom fan motor on 10 tray table top units is missing or is not transmitted for at least 5 seconds at a time.
Error area:
Data transfer cable, control electronics for middle fan motor on floor units and the bottom fan motor on 10 tray table top units
Relevant causes/components:
Fan mo-tor4
Fan motor bottom on floor units
Fan mo-tor2
Fan motor bottom for table top units.
Fan motor middle for floor units
Fan mo-tor1
Always the top fan motor
In case bus components are failing to communicate via the bus there are 34.x error messages. If more than one busmember is missing there is no address adding any more like known from the former SCC series, but each bus memberis displayed with its own error message instead.
For SCC / SCC 5 Senses and SCCWE,
If more than one bus member was faulty, Bus error messages were added up, for example; if both top and bottom motors were faulty and not communicating with the Bus Master, Service 34-1 and Service 34.2 were added to provide a Service 34.3 error message. (1+2=3).
For the iCombi series each bus member fault is shown individually and in the above cercumstance both Service 34.1 and Service 34.2 would be shown as error codes.
Netzfrequenz nicht erkannt
Mains frequency not detected
Falschanschluß-Erkennung Low-Limi
False connection detection Low limit
Falschanschluß-Erkennung High-Limit
False connection detection - High Limit
Störung kapazitive Taste
Capactive button malfunction.
X76: With gas units only: 230 V to be switched at K1 main contactor to supply A5 ignition box and gas blowermotors.
230Vac output only on gas models which is used to supply the gas ignition controller but only when K1 contactor energisese after ESTL checks.
X75: A13 pump control pcb or A18 with iC Pro XS
240Vac supply to A13 pump board iCombi Pro and Classic
240Vac supply to A18 pump board for iCombi XS units.
The iCombi Pro XS does not have the new A13 as it still has the original hardware from index I (i.e. Drain valve, SC pump, Care pump, CleanJet pump). Therefore it needs a special pump adapter pcb A18 to be able to control the older hardware with the new A10 I/O board.
X70: M5 cooling fan
X70 M5 cooling fan output 12Vdc.
With the exception of iCombiPro XS and CMP XS, the cooling fan M5 is controlled by the CPU and depends on temperatures on several pcbs and the fan motor/s.
With all electric and gas units 6-1/1 to 10-2/1 M5 is located at the bottom right hand corner of the electrical compartment directly above the air filter.
With all electric and gas floor units M5 is located at the bottom right hand corner of the electrical compartment directly above the air filter.
iCombi Pro XS. The cooling fan M5 is controlled by the temperature of B10 thermocouple in the electrical compartment; B10 is located behind the inverter of M1 fan motor and connected to A10, X6, Pins 3, 4.
With iCombi Pro XS units M5 is located at the bottom right hand corner of the electrical compartment directly above the air filter.
X59: LED light (6,8 V)
X59 6.8V Power supply to Door LED arrays
X51: 12 pol connector: 5 V stand-by voltage to A11, 12 V to A11 if unit is on and bus signal from A11
X51 is a 12 pole female connector from which a 12 core cable carries data to and from all Bus members.
The 12 wire cable also caries a 5V "stand by" voltage from I/O board A10 to CPU (A11 iCombi Pro) and the ICP capacitor switch pcb (A19).
The "stand by" voltage enables operation of the capacitor on/off switch and the CPU as soon as power is supplied to the oven (as the isolator is switched on).
When the capacitor switch is operated, ESTL completes its safety checks and providing no high temperature errors or component errors exist, contactor K1 energises and a 12 V supply is also sent to the CPU via this connector and its associated cable.
X52: 6 pol connector: bus to A13 pump control pcb
Data Highway for communications between CPU and all Bus members.
27
Error code description:
ICP XS & CMP XS ONLY
Malfunction when opening/closing the drain valve
Condition for error detection:
The drain valve receives a request to open/close, but the drain valve still does not detect an end position after 4 minutes.
Error area: Drain valve
Relevant causes/components:
14
Error code description: The steam generator water level detection is faulty.
Condition for error detection: The steam generator is filled via valve Y1, but no “full” water level is measured by the level electrode, even after a long time.
If the measured water flow from the CDS sensor is significantly greater than the reference volume of the steam generator, this service error 14 is triggered.
Error area:
Water level detection in the steam generator, reference volume steam generator, water leakage when filling the steam generator.
Relevant causes/components:
Level electrode Electrical connection to components Conductance water/threshold value for level detection Steam generator reference volume
12
Error code description:
Incorrect water quantity/flow measurement when filling the steam generator.
Condition for error detection:
A flow rate in a corresponding tolerance range is expected on the CDS sensor. The water also actively enters the steam generator, the level electrode indicates a full water level, but the CDS sensor passes on an error/implausible flow or no signal at all.
Error area:
Water supply, water flow detection, fill level detection
Relevant causes/components:
34.1
Error code description:
Faulty data communication to top fan motor.
Condition for error detection:
BUS signal from top fan motor is missing or is not forwarded for at least 5 seconds at a time.
Error area:
Data transfer cable, control electronics for top fan motor
Relevant causes/components:
ESTL has initialised Electrical connection to components Control electronics for top fan motor Other information:
Before disconnecting the unit or replacing a component, download all data from the unit to a USB stick.This data is required if further support from RATIONAL is required.
NOTE: This error is reset automatically as soon as a BUS signal is present for at least 5 seconds at a time.
NOTE: If the ESTL has triggered (Service 72), one or more Service 34 errors are often displayed because the eSTL de-energises the affected BUS participants.
After a successful reset of the Service 72 error, the Service 34 errors are also reset automatically.
29
CPU Temperature too high (Greater than 75 degrees C - 167 degrees F.
19.1
Check SD card
25
Service 25
Error code description: No or insufficient water circulation is detected during an iCareSystem cleaning program, self-test or module test.
Condition for error detection: Water hitting the fan wheel during circulation increases the output of the fan motor.
If this output increase is too low, the system assumes that no or too little water is entering the cooking cabinet.
Relevant causes/components * Drain sieve * Connection between control box and cleaning box * Cleaning carried out incorrectly * Only for XS units (6-2/3): circulation pump or drain valve faulty * Cleaning pipe * Air baffle, baffle plate * Cleaning box * Fan motor * Foam brake * Faulty water outlet/water loss
Pict. 11: Additional functionsFrom top to bottom: The meanings of the five icons are▪ Information on your unit (model, current software version running, serial number)▪ Font selection – only for writing and naming cooking programmes▪ Left: ESG = Empty steam generator | Right: Service menu▪ Return
*See Video Library "Additional Functions screen functions"
▪ Network settings (but not active in this screenshot)▪ Left: Change from Celsius to Fahrenheit and back | Right: Date and time settings▪ Left: Additional Functions | Right: Return
See Video Library "iCombi Classic Settings screen functions"
From top to bottom: The meanings of the six icons are▪ Data up-/and download
See Video Library "iCombi Classic Settings screen functions"
Pict. 9: First screenFrom top to bottom: The meanings of the four icons are▪ Programming mode▪ Automatic cleaning▪ Settings▪ Return
See Video Library "iCombi Classic Initial screen functions"
Pict. 8: First screen after pressing menu: Six buttons for operat-ing the iCombi Classic. See highlighted difference between but-tons 3 and 5.The screen is not a touch screen. Instead you operate with the four buttons to the left and two buttons on the right ofthe display. Only if an icon has a small white vertical bar on the outside, the corresponding button can be pressed.In the example above you can see that buttons 1, 2, 3 and 6 have a content and lead to an action, buttons 4 and 5 donot.With the return key (button 6) you go back one level and with a green tick you confirm a setting made.
See Video Library "iCombi Classic First Screen after pressing "menu" button demo"
Pict. 6: iCombi Classic: start screen with button “menu”
See Video Library "iCombi Classic "Start Screen with Menu Button"
To switch on the unit, press the on/off button for about three seconds. The unit will start. The start screen will appear
See Video Libray "iCombi Classic On/Off switching procedure"
To switch off the unit, press and hold the on/off button until the blue progress bar at the top of the display is com-pletely filled. A “goodbye” message is displayed
See Video Libray "iCombi Classic On/Off switching procedure"
The password to enter the service menu for technicians is “TECLEVEL”
It is no longer possible to enter the iCombi Pro Service menu unless you have downloaded the Rational PIN Creator App and have a valid log in and password.
Attempts to enter the Service Menu will generate a QR code on the screen.
Scanning the QR code with the Rational PIN Creator app will generate a PIN which if used on the screen will enable entry to the Service Menu for technicians.
See Video Library "Access to Service menu for Technicians"
If you have undergone technical training by Rational UK or its approved training partners you can obtain a log in and password from Rational UK.
You can operate the iCombi Pro with a few simple moves on the touch panel and/or turning and – for confirmation -pressing the central dial.
See Video Library " iCombi Pro Start screen function"
To switch on the unit, press and hold the on/off button until the LED lights green. If all starting conditions are met thestart screen will appear
Please note: When the on/off switch LED illuminates green, immediately release the on/off switch.
Failure to do so will result in the LED blinking green/amber/green/amber continuously and the machine will not switch on.
See Video Library "iCombi Pro switch on precedure"
Inhaltsverzeichnis
Table of Contents.
X51: 12 pol connector: 5 V stand-by voltage to A12, 12 V to A12 if unit is on and bus signal from A12
X51 is a 12 pole female connector from which a 12 core cable carries data to and from A10 and the CPU (A12).
The 12 wire cable also caries a 5V "stand by" voltage from I/O board A10 to on/off switch on CPU (A12) .
The "stand by" voltage enables operation of the on/off switch and the CPU as soon as power is supplied to the oven (as the isolator is switched on).
When the on/off switch is operated, ESTL completes its safety checks and providing no high temperature errors or component errors exist, contactor K1 energises and a 12 V supply is also sent to the CPU via this connector and its associated cable.
X2: B3 thermocouple core probe
Core probe with single thermocouple situated at the end of the probe. It is important when using the probe to ensure the end of the probe is in the centre of the procduct to be cooked.
X19: A31 Water distribution block
Connection X19 has 6 pin terminals but only 1, 2, & 5 are used to supply 3 solenoid valves in the water distruibution block as required by the process selected. Each valve operates at 240V ac.
Terminal Pin no 1 (White cable) drives solenoid valve Y2 (Control nozzle) and is ndicated with a small triangle printed onto the pcb.
Terminal Pin no 2 (Yellow cable) drives solenoid valve Y1 (Water box / steam generator filling).
Terminal Pin no 5 (Black cable) drives solenoid valve Y4 (Care box fill).
Terminal Pin no 6 (Blue cable) is the Neutral to all solenoid valves in the block.
As all connections to the pcb this connection is also coded (poke yoke principal) However during covid, some Combi Steamers were issued with uncoded connectors for X19.
This raisese the possibility of the connector becoming out of algnment!, resulting in no solenoid valve functions or incorrect solenoid valve functions.
Always check for the correct the alignment of this connector
X24: Control signals to SSR (12 V)
X24 has 8 terminal connections (4 x 12V dc outputs).
Terminals 1, 3, 5, and 7 are +ve whilst terminals 2, 4, 6, and 8 are -ve.
Therefore the 4 x 12 V dc output pairs are: 1 & 2 - 3 & 4 - 5 & 6 - 7 & 8.
Where a single 4 pole SSR is installed (Some 6 tray machines) only the positive outputs 1,3,5,and 7 are used and terminal 2 is used as a common negative.
Where muliple 2 pole SSR's are used (Most other Rational ovens) all 8 terminals are utilsed as 4 indivdual 12v dc outputs.
Please go to trainin manual page 140 Chapter 18 for technical details and testing procedures of SSR relays.
X29: Extension pcbs (A22 (4fold relays), A23 (energy optimization), A32 (SSR module for US/CAN) or A18 with iCPro XS
X29 is an 8 pin terminal for the addition of optional pcb's.
Icombi Pro and iCombi Classic can accomodate up to three Optional pcb's, whilst iCombiXS can accomodate only two additional pcb's.
Please go to Training manual page 85 Chapter 8.3 for details of available options and how to install.
X1: P1 Pressure senso
The sole function of pressure sensor P1 is to continuously measure the differential pressure from the top motor drive shaft to the periphery of the top fan blade.
In order to record accurate pressure readings P1 must be mounted horizontaly.
P1 is powered with 12 Vdc from pcb A10, terminal X1, pins 1 & 3.
The pressure readings are sampled via two tubes, one situated at the motor shaft, the other at the periphery of the fan blade.
The difference between these negative pressures is measured and converted in the P1 pressure sensor to a dc voltage.
When the fan wheel is stationary a dc voltage between 0.45 and 0.55 V is delivered to the A10 pcb terminal X1, pin 2.
This voltage can be checked physically by appropriate meter and probes and also in:
ICP Service Menu - Launcher for Humidity control.
"See Training manual page 215 Chapter 25.4.5.Service for humidity control"
and
ICC Service menu - Diagnostic
Training manula page 226 Chapter 26.4.1 Service chapter Diagnostic
Differential Pressure across the fan varies with changes in fan motor speed and direction, cabinet air temperature and cabinet air humidity.
X21: 230V power supply in
The moment the appliance isolator is switched on 230 Volts is applied to terminal X21 on pcb A10 directly from L1 on the supply side of contactor K1.
As X21 becomes under power, Pump PCB (A13) is immediately supplied with 230 V ac directly from A10 terminal X75
Fuses A10 (F1) and A10 (F2) protect the conductors to all 230 Volt external components from damage due to component short circuit faults.
X19: A31 Water distribution bloc
Connection X19 has 6 pin terminals to supply 5 solenoid valves in the water distruibution block as required by the process selected. Each valve operates at 240V ac.
Terminal Pin no 1 (White cable) drives solenoid valve Y2 (Control nozzle) and is ndicated with a small triangle printed onto the pcb.
Terminal Pin no 2 (Yellow cable) drives solenoid valve Y1 (Water box / steam generator filling).
Terminal Pin no 3 (Grey cable) drives solenoid valve Y3 (Moistening).
Terminal Pin no 4 (Brown cable) drives solenoid valve Y14 (Cleaning box fill).
Terminal Pin no 5 (Black cable) drives solenoid valve Y4 (Care box fill).
Terminal Pin no 6 (Blue cable) is the Neutral to all solenoid valves in the block.
As all connections to the pcb this connection is also coded (poke yoke principal) However during covid, some Combi Steamers were issued with uncoded connectors for X19.
This raisese the possibility of the connector becoming out of algnment!, resulting in no solenoid valve functions or incorrect solenoid valve functions.
Always check for the correct the alignment of this connector
X15: S11 CDS sensor
The Calcium Diagnostic Sensor is supplied via X15 pins 2 & 3 with a 5V power supply and utilises Hall effect sensors to measure the volume flow of water through a known pipe circumference.
It delivers a specific number of pulses for every litre of water flowing through the pipe.
This pulse signal is delivered to pin 1 of terminal X15 on the A10 pcb.
Please Log in to the Service Menu (TECLEVEL) in Basic Settings and launch the General service Launcher to check the correct pulse count has been set.for the machine as follows:
Must be 1350 pulses / litre for 6-1/1 to 20-2/1
Must be 1000 pulses per litre for 6-2/3
X12: S2 Water level electrode
X12 pins 1 & 2 (Grey wire on pin 1 is the sensing electrode and white wire on pin 2 is the compensating electrode). The water level electrode is shown on drawings as a 3 wire + earth probe.
In fact it is a two wire + earth probe.The white cable connected to pin 3 of X12 is unused.
The simple task of this device is to sense the presence of water thus indicationg that the steam tank is either full or indeed not full and communicate this information to the processor via the A10 pcb.
It achieves this by sensing when water touches the centre electrode and effectively connects the electrode directly to earth potential through the conductivity of the water.
In a working system, the voltage across the electrode to earth when water is not present is circa 1.373 Volts AC at 500 Hz.
When water is present it effectively closes the circuit between the centre electrode and earth and the voltage measured across pins 1 and earth at terminal X12 on pcb A10 is virtually 0 volts.
The function of the compensating electrode is to provide a back up in circumstances where the central electrode is either scaled or if the connection to the centre electrode fails (open circuit). In either case the compensating electrode will sense the presence of water and stop the steam generator filling process.
The voltage measured across the compensating electrode and earth when water is not present is circa 6 Volts AC at 500 Hz.
X11: Humidity valve/s Y5 (and Y15 with floor units)
Output is 12Vdc on X11 pins 3 & 4.
The Humidity valve/s open and close to reduce or increase humidity during cooking, if the chef selects a value for the cooking cabinet humidity which is below or above steam saturation level (local boiling temperature).
The valves are operational during Combination mode.
In Steam Control mode and Hot Air mode the valves will not operate.
X6 with floor units: tandem connector: B5 thermocouple steam generator plus B9 second thermocouple cookingcabinet (bottom)
B5 Thermocouple is situated in the steam generator directly against the heat source, it is connected to pins 1 & 2 terminal X6.
B9 Thermocouple is situated in the cooking cabinet at low level, it is connected to pins 3 & 4 terminal; X6.
The function of B5 s to measure / monitor preheat of the steam generatorfor timing of any cooking program start.
The function of B9 is to work in conjunction with B1 to ensure accurate chamber temperature monitoring in a larger chamber with more circulation fans
The combi-steamer checks the temperature of sensor thermocouple B5 and B9 every second (in all modes).
As soon as an implausible temperature value is measured on the thermocouple sensor B5, a service error (Service 20.8) is indicated.
Check the value of temperature sensor B5 in the service menu:
For iCombi Pro: Select the steam launcher - go to Diagnosis.
For iCombi Classic: Select Diagnostics and B5
As soon as an implausible temperature value is measured on the thermocouple sensor B9 cooking cabinet, a service error (Service 20.16) is indicated.
Check the value of temperature sensor B9 in the service menu:
For iCombi Pro: Select the hot air or humidity launcher - go to Diagnosis.
For iCombi Classic: Select Diagnostic and B9
If this value is approx. 615°C [1140°F], either the sensor is defective (Open Circuit) or the electrical connection between the temperature sensor and the I/O PCB is faulty
X6 with iCombi Pro XS: tandem connector: B5 thermocouple steam generator plus B10 thermocouple electricalcompartment (behind the converter of the M1 fan motor)
B5 Thermocouple is situated in the steam generator directly against the heat source, it is connected to pins 1 & 2 terminal X6.
B10 Thermocouple is situated in the electrcal compartment at the left of the oven, behind the inverter of M1 Fan, it is connected to pins 3 & 4 terminal; X6.
B5 function is to measure / monitor preheating of the steam generator for timing of any cooking program start.
B10 controls the speed of the cooling fan M5
The combi-steamer checks the temperature of sensor thermocouple B5 and B10 every second (in all modes).
As soon as an implausible temperature value is measured on the thermocouple sensor B5, a service error (Service 20.8) is indicated.
Check the value of temperature sensor B5 in the service menu:
For iCombi Pro: Select the steam launcher - go to Diagnosis.
For iCombi Classic: Select Diagnostics and B5
As soon as an implausible temperature value is measured on the thermocouple sensor B10, a service error (Service 20.32) is indicated.
Check the value of temperature sensor B10 in the service menu:
For iCombi Pro:Select Launcher General – Diagnosis tab – PCB temperatures.
For iCombi Classic under “Diagnostic B10
If either value is approx. 615°C [1140°F], either the sensor is defective (Open Circuit) or the electrical connection between the temperature sensor and the I/O PCB is faulty
X6 with table units 6-1/1 to 10-2/1: B5 thermocouple steam generator
B5 Thermocouple is situated in the steam generator directly against the heat source, it is connected to pins 1 & 2 terminal X6.
Its function is to measure / monitor preheat of the steam generator for timing of cooking program start.
The combi-steamer checks the temperature of sensor thermocouple B5 every second (in all modes).
As soon as an implausible temperature value is measured on the thermocouple sensor B5 steam generator, a service error (Service 20.8) is indicated.
*Check the value of temperature sensor B5 in the service menu:
For iCombi Pro: Select the steam launcher - go to Diagnosis.
For iCombi Classic: Select Diagnostics and B5
If this value is approx. 615°C [1140°F], either the sensor is defective (Open Circuit) or the electrical connection between the temperature sensor and the I/O PCB is faulty
X5: B4 thermocouple humidity
Thermocouple B4 measures the temperature behind the top circulation fan during the initial Self test calibration process and during any subsequent manual calibration. It also monitors the cabinet temperature for humidity control above the local boiling point.
The combi-steamer checks the temperature of thermocouple B4 every second (in all modes). As soon as an implausible temperature value is measured service error code Service 20.4 is indicated..
Check the value of temperature sensor B4 in the service menu:
For iCombi Pro: Select the steam or humidity launchers - go to Diagnosis.
For iCombi Classic: Select Diagnostics and B4
If this value is approx. 615°C [1140°F], either the sensor is defective (Open Circuit) or the screw connection on the inner cabinet is loose or not adequately insulated or the electrical connection between the temperature sensor and the I/O PCB is faulty.
X4: B2 thermocouple control
B2 is situated in the Control box (formerly known as the quench box) and its function is to reduce the volume of steam emmissions from the vent stack and also to reduce the temperature of waste water through the drain to a level below 65 degrees during normal oven cooking processes.
The combi-steamer checks the temperature of thermocouple B2 every second (in all modes).
As soon as an implausible temperature value is measured, service error code Service 20.2 is indicated.
Check the value of temperature sensor B2 in the service menu:
For iCombi Pro: Select the steam or humidity launchers - go to Diagnosis.
For iCombi Classic: Select Diagnostics and B2
If this value is approx. 615°C [1140°F], either the sensor is defective (Open Circuit) or the electrical connection between the temperature sensor and the I/O PCB is faulty.
X3: B1 thermocouple cooking cabinet
The combi-steamer checks the temperature value of temperature sensor B1 every second (in all modes). If the temperature is below 350°C [662°F], the combi-steamer is fully functional.
If the temperature rises above 350 degrees Service 28.2 shows and the oven has no function.
To protect the unit from damage due to overtemperature, the unit cannot be operated again until the temperature sensor B1 has cooled below 350°C [662°F]
Thermocouple B1 also controls steam production for steam requirements up to local boiling point by monitoring the cooking cabinet temperature up to steam saturation point.
(Steam saturation point is when all internal cabinet metalwork (including B1) reaches the local boiling point temperature).
Upon reaching steam saturation point B1 causes the processor to switch off steam heating.
When product is placed in the oven the cabinet temperature reduces and steam production starts once again until the product, cabinet metalwork and B1 reaches steam saturation point..
X2: B3.1 to 3.6 thermocouples core probe
The ICP Core probe has 6 separate thermocouples, five in the stem and one in the handle.
The probe when used in a process should be completely embedded in the product to be cooked, such that the 5 thermocouples in the stem are recording a temperature inside the product .
The processor calulates the average temperature of the 5 thermocouples and uses this value in order to aciieve an accurate core temperature.
The handle of the Core probe should be pushed against the body of the product to be cooked as the thermocuople situated in the handle is used in the process for product browning and therefore should be in contact with the product surface.
X22: “safety chain”: Pin 1 (230 V) to and Pin 3 from eSTL (L1 and L*). With iC Pro XS: Pin 3 from safety temperat-ure limiters F3 and F4 (L*). Pin 2 is for neutral. Info: L* is also used for energizing K1.
A10 Terminal X22 pin number 1 (marked with an arrow on the pcb) is the 240V output to the safety chain, which terminates at input connection L1 on the ESTL.
The output from the ESTL (Terminal L*) terminates on connection A1 of the K1 contactor coil, thus potentially switching K1 on or off. Dependent of course upon the condition of the safety chain.
At the same time the output from the ESTL (Terminal L*) also returns to pin 3 of A10 terminal X22 to signal to A10 the condition of the safety chain, enabling the processor to provide appropriate indications of safety chain status. (Service 72 or Error 72)
See section 9 of the training manual for "Temperature sensors and electronic safety temperature limiters (eSTL)" Commencing page 91.
See section 24 of the training manual for electrical wiring diagrams - commencing page 181.
SC automatic
During the production of steam, the concentration of minerals inside the steam generator will increase over time.
These minerals settle on the heating elements and heat exchanger as well as the interior steam generator walls.
In order to reduce this effect the steam generator is pumped off and flushed regularly.
The conditions required to trigger the SC Automatic process vary by model
Normal SC automatic iCombi Pro
The iCombi Pro Self Clean Automatic function is triggered when the steam tank heating elements have been operational (under power) for a default minimum time of 60 minutes and the machine is switched off.
Once the machine is switched back on SC pump will pump down the steam tank and refill it with fresh water.
The default time can be adjusted in the Service Menu basic settings (TECLEVEL) from 60 minutes to 108 minutes.
Normal SC automatic iCombi Classic
The iCombi Classic Self Clean Automatic function is triggered when the steam tank heating elements have been operational (under power) for a default minimum time of 45 minutes and the machine is switched off.
Once the machine is switched back on the SC pump will pump down the steam tank and refill it with fresh water.
This default time can be adjusted in the Service Menu basic settings (TECLEVEL) from 45 minutes to 54 minutes.
Forced SC automatic
For both iCombi Pro and iCombi Classic, the steam generator elements are only allowed to be operational (under power) for a maximum of 120 minutes, immediately after which, the steam generator is automatically pumped down and refilled, providing that:
a) No operating mode is selecetd for at least two minutes and the cabinet temperature is less than 200 degrees C.
OR
b) The oven door has been open for at least five minutes
10 iCombi Classic
Keep it simple!
The processor has prompted the SC pump to empty the steam tank and the level probe has not indicated that the water has gone!
It can only be:
a) Failure of the SC pump, (Check in function test)
b) Blockage in the pump pipework, (Inspect and clear)
c) Poor electrical connection to the pump (Check plug connections)
d) Failure of A13 Pump board (Check LED codes)
e) Blockage in the fill box (Inspect and clear)
S_10 iCombi Pro
Keep it simple!
The processor has prompted the SC pump to empty the steam tank and the level probe has not indicated that the water has gone!
It can only be:
a) Failure of the SC pump, (Check in function test)
b) Blockage in the pump pipework, (Inspect and clear)
c) Poor electrical connection to the pump (Check plug connections)
d) Failure of A13 Pump board (Check LED codes)
e) Blockage in the fill box (Inspect and clear)
SC-automatic
During the production of steam, the concentration of minerals inside the steam generator will increase over time. These minerals settle on the heating elements and heat exchanger as well as the interior steam generator walls. In order to reduce this effect the steam generator is pumped off and flushed regularly. The conditions required to start the SC Automatic process vary by model and for iCombi the conditions are detailed in Section 13.3 page 114 of the training manual.
Service 14
Appears for 30 sec. after switch ON - Display can be cancelled by touch - Level electrode no water sensing - CDS sensor measured enough pulses; - Possible reasons: water conductivity too low, osmosis water treatment
Service 13
As of software version 01-07-09 - Only hot air possible - No low water signal during last 3x5 minutes of steam production ==> filled by auxiliary mode - Check 0-1 signal from level electrode to pcb
Service 12
Appears for 30 sec. after switch ON - Display can be cancelled by touch - Level electrode o.k. - Check CDS sensor for blockage (no signal), water pressure too low
B1 cabinet sensor defective
Error code: E3
B1 Interior cabinet sensor broken possibly open circuit
heating blocked by energy optimising
Error code: E2 - Time out of external power optimising system - Heating blocked by the external energy optimising system for longer than 2 minutes.
External EEPROM data error
Error code: E1 - External EEPROM Not initialised
open water tap
Error code: OPEN (in time display) / H2O (In cabinet display) - Indication for lack of water - Open water tap
change polarity of mains supply
Error code: PoL (in time display / CHnG (in Cabinet display)
Service 10
Appears for 30 sec. after switch ON - Display can be cancelled by pressing the "return" key - SC-automatic didn‘t work, water level does not decrease - Check SC-pump and drain hose of steam generator
SC Automatic function is explained in "Fundamentals".
Go to: Doc Lib - SCC & CM 2004-2011 - Training manuals - Fundamentals - Page 14
Service 120
After operating care pump M12 (filling care solution into steam generator) and topping up with water via Y1, the level electrode does not recognise water; - Care Pump M12 or level electrode defective; - Display only after twice starting filling solenoid Y1 yet no water is detected; - Reset error by successful completing ABORT program;
Service 110
Malfunction of SC pump during the time when Care solution was inside the steam generator or level probe scaled. - Reset error by successful completing ABORT program;
Service 100
Power remained present on fan motor when unit was switched off last. - Main contactor didn‘t disengage. - ON/OFF switch on pcb is defective.
To clear error message: - Isolate unit from power. - Switch pcb OFF, - Change contactor or pcb,. - Reconnect to power (wait 1 minute), - Switch pcb ON
Service 44
No temperature rise recognised by B1 during steaming time while being in Cleanjet phase - Reset error by successful B1 temperature measuring during next Cleanjet - Steam heating elements or SSR's faulty?
Service 43
CDS sensor continuously sends pulses.
Solenoid Y1, Y3 or Y4 is passing water - Reset error by successful completing ABORT program;
Service 42
Solenoid Y4 Care defective or hose to care container blocked or kinked; CDS does not send any pulses;
Reset error by successful completing rinse program;
Service 41
Solenoid valve Y3 defective or moistening valve blocked; CDS does not send any pulses;
Reset error by successful completing rinse program
Service 40
Care pump faulty or does not fill enough care solution into steam generator. After filling of the care solution into the steam generator the CDS sensor sends too many pulses until the level electrode recognises water.
Check if the hose from the care pump outlet is not kinked; - Cleanjet finishes without care phase; - Reset error by successful completing rinse program;
Service 34.X
Appears as of SW 01-07-02: Indication in case of bus signal problems. Main pcb cannot communicate with the following parts:
Combination of faults possible i.e.: 10 = 2+8 - 1: I/O PCB - 2: Motor bottom - 4: Motor top - 8: Ignition module top - 16: Ignition module bottom - Check bus cable plug and cable for connection and damage
Service 33.X
Appears after 4 x Reset command without positive result - 1: Ignition box top, - 2: Ignition box bottom - Check ignition wire, ignition box gas valve and gas supply.
Service 32.X
Since SW version 01-07-09: Internal Ignition box error is existing longer than 30 sec. Change ignition box - 0: Ignition box top - 1: Ignition box bottom - 2: Both Ignition boxes
Service 31.X
Appears for 30 sec. after switch ON - Core sensor defective - Combination of faults possible i.e.: 10 -->2+8) - 1: Shaft probe - 2: 5th probe (close to shaft) - 4: 4th probe - 8: 3rd probe - 16: 2nd probe - 32: 1st probe in tip
Service 30
Appears for 30 sec. after switch ON - Display can be cancelled - Humidity control out of function - Humidity emergency control active since more than 1 hour - As of SW version 01_07_04 emergency control is shown with a dot under item „Mod.“
Service 29
Appears on time after switch ON until temperature is low again - Temperature PCB above 85°C - Check air filter, cooling fan and control panel gasket - Check for external heat sources
Service 28
Appears if temperature at thermocouple steam generator B5 is above 180°C (300°F) - Indication goes off when temperature below 110°C (230°F) - Descale steam generator
Service 27
Appears for 30 sec. after switch ON - Display can be cancelled switch - drain valve in permanent open position, CleanJet not possible - Check micro switch drain valve - Start rinse (abort) program
Service 26
Appears on time when CleanJet is selected - Cooking not possible - drain closed - Micro switch drain valve in permanent closed position - Replace drain valve assembly
Service 25
Display can be cancelled - Remove container from cabinet - CleanJet pump does not deliver - Fan motor does not reduce speed - Water must hit left rack at rail 3-4 - Check water tap, pump, quenching solenoid (refill function), quenching nozzle or CleanJet pipe for blockage
Service 24
Since SW 01-07-09 only! - Display at once when: Temp. B1 raises starting from 150°C (300°F) to above 200°C (300°F) without energy demand - Intermittent buzzer 30 sec - Unit without function
Service 23
Since SW 01-07-09 only! - Display at once when: Temp. B5 raises above 100°C (212°F) for 60sec. without energy demand - Intermittent buzzer 30 sec - Unit without function
Service 21
Appears for 30 sec. after switch ON - Display can be cancelled by touch - Micro switch ClimaPlus without function during start routine - Manual cooking without humidity control possible
Service 20
Appears on time - Thermocouple broken or out of range - Buzzer sounds 30 seconds - Unit without function
Service 17
Only active with pcb-SW version 01-07-09 - Data on EEPROM faulty - New original EEPROM needed
Service 16
Appears for 30 sec. after switch ON - Only active with pcb-SW version 01-07-09 and EEPROM version later than 01-07-09 (Data protection EEPROM)
Service 11
Appears for 30 sec. after switch ON - Display can be cancelled by touch - Water level o. k., - Level electrode is working - Too many pulses measured by CDS sensor - Check electrode or water leakage through check valve
RPM
RPM. Measures fan speed
B4
B4. Measures the tempertaure of the cabinet from behind the fan. (air circulation temperature)
P
P1 Measures the pressure behind the fan between the fan shaft and the fan perifery, converts the pressure to as voltage which the CPU can read and understand