Rational iCombi, iCombi Classic - Food Equipment Manual

Also See for iCombi:

Quick service reference (4 pages)

Service & reference manual (3 pages)

Original installation instructions (20 pages)

Table of Contents

Contents

1 SERVICE REFERENCE iCombi
2 ADDITIONAL FUNCTIONS
3 CALIBRATION/SELF-TEST
- 3.1 Calibration errors
4 ERROR CODE
- 4.1 ERROR CODES REMOVED FROM SOFTWARE VERSION 5.0X
5 SOFTWARE UPDATE
- 5.1 SERVICE LEVEL ACCESS (DIAGNOSIS, SETTINGS, RUNTIMES)
6 I/O PCB A10: DIAGNOSTIC LED
7 eSTB A15/A16: DIAGNOSTIC LED (3 LEDS A, B, C)
8 Documents / Resources
- 8.1 Download manual

Rational iCombi, iCombi Classic - Food Equipment Manual

SERVICE REFERENCE iCombi

ADDITIONAL FUNCTIONS

HACCP download
Service download
Programme upload and download
Date
Time
Adjust the display setting to the time

Menu item: Information
Draining the steam generator (ESG)
Service level

Information:
Model
Software

Programmes:
Cleaning
Setting
Set buzzer tone
Buzzer volume
Note on rinsing the hand shower
Switch to another setting level

CALIBRATION/SELF-TEST

The calibration values are determined after installation during the selftest and during the calibration and stored on the SD card and the PCB. On-site calibration is necessary when replacing:
Pressure sensor P1, B4 thermocouple humidity, fan wheel, micro SD card and PCB together, use of different hinging racks, installation of new air baffle, installation of hoods or Combi-Duo, customer complaints with uneven cooking results, subsequent relocation.
A self-test is necessary for new installations.
Start conditions:
Cooking cabinet sensor B1, control sensor B2, humidity sensor B4: < 40°C. In order to achieve the best possible calibration values, a closed GN container should be inserted 20 mm deep with the open side down in the middle in front of each fan wheel.
After a successful self-test, a flue gas analysis must be carried out for gas units!

Calibration errors

Calibration errors either occur during the self-test or a manual calibration. The error number refers to the calibration step in which the error occurred.
The most common calibration errors are:

Step 0 error start conditions:
- B1, B2 or B4 over 40°C
- Filling cleaner box with water taking too long, problem with solenoid valve block or control solenoid
20: Differential pressure sensor faulty, loose cables n 100: Fan motor speed detection faulty
200: Steam heating does not work, (check voltage, SSR, plug X20, gas supply, energy optimisation)

ERROR CODE

Service	Check and replace if necessary
2	Energy optimization active (only with installed energy optimization PCB)
10	SC-automatic error SC pump, Combi water box, pump-off hose
11	CDS sensor reporting too many pulses Level electrode, CDS sensor flow rate, I/O PCB
12	CDS sensor not reporting any signals CDS sensor, I/O PCB, water connection
14	Level electrode detecting no water even though CDS is measuring pulses Level electrode, water conductivity
16	EEPROM structure was replaced with a more recent software than that on the PCB, update the unit with the latest software
17.X	Unit data incorrect (internal fault only possible for internal purposes) Inform RATIONAL; use Recovery Software
19.X	x= type of error -1= EEPROM missing or not recognised; -2 = internal storage error (battery may have been removed)
20.X	Thermocouple break, x= sensor: -1 Cooking cabinet B1; -2 Control sensor B2; -4= humidity B4; -8= Steam generator B5; -9: Thermocouple B9 faulty - only floor units
23	Temperature rise on the steam generator without request Steam heating check
24	Temperature rise in the cooking cabinet without request Hot air heating check
25	No water detection without cleaning Fan wheels do not run / no increase in performance at the fan motor when the water jet hits: Check water supply, pressure, hoses, CDS sensor, position of GN conductors and mobile oven racks
28.x	Thermocouple, x= Sensor: -1: SG B5 too hot (>170°C); -2: Cooking cabinet B1 too hot (>350°C); -4: Steam generator B5 too cold (<2°C, heating possible again from 4°C)
29.x	PCB temperature too high: -1: motor down; -2: motor centre; -4: Pump PCB; -16: I/O PCB -64: CPU PCB
30	Humidity measurement not working correctly Pressure sensor P1, connection hoses, measuring connection pieces, humidity sensor B4
31.xx	Thermocouple core temperature B3; x = error type: -1: core probe error; -11: external core probe error
32.x	Fault in combustion system or gas supply, x= fault, y= combustion system -1.y (22= HA top, 32= steam, 42= HA bottom): 5x unsuccessful ignition process -2.y (17/18/49= HA top, 27/28/52= steam, 37/38/55= HA bottom): Flame current measured with gas valve closed -3.y (19= HA top, 29= steam, 39= HA bottom): Burner goes out 5 times during the burning phase -4.y (20= HA top, 30= steam, 40= HA bottom): The speed of the gas blower deviates from the target speed by more than 150 rpm
33.x	Error in the control of the combustion system, x= error -1: Ignition box fault accumulation -2: Desired gas speeds breach condition >0 rpm or Min. < Start < Max. -3: Mains frequency outside 40...70 Hz -4: Phase and neutral conductor mixed up -5: Automatic ignition controller error
34.xx	Bus signal missing:-1 motor top; -2 motor centre; -4 motor bottom (floor units only); -8 Pump PCB; -16 I/O power supply; -32 ignition box;
35	UltraVent: Bus signal / internal communication
35.x	UltraVent error: -1 voltage missing; -2 Filter detection faulty (UV Plus only); -3 Thermocouple control error; -4 Thermocouple motor protection error; -5/6 Dirt in filter (pre-warning/immediate replacement); -7 Filter not inserted/no differential pressure measured
36	Differential pressure sensor fault (no signal output of 0.5V; check 12V at P1); P1 must be installed horizontally
37	Climate control malfunction: Check connecting hoses
40	Check the care pump (M18) in the function test (note: Y4 is activated at the same time, run the rinse programme)
42.x	Solenoid valve x does not open: -1: fill Y1; -2: control Y2; -4 Care Y4; -5 Climate Y5/Y15
43.x	Solenoid valve x does not close: -1: Fill Y1; -2: control Y2; -4 Care Y4; -5 Climate Y5/Y15
44	Steam heating faulty or inadequate during cleaning
46.x	SC pump (M4); x= type of error: -1: defective; -2: Output too low
47	Wastewater pump (M15); -1: defective; -2: Output too low
48	Circulation pump (M17); -1: defective; -2: Output too low
49	Care pump (M18); x= type of error: -1: defective; -2: Output too low
50	Real time clock (date and time) not initialised
51	Check battery, replace if necessary
52	LED cooking cabinet light faulty
63	Water detected after dry calibration, repeat self-test with water
64	Unit calibrated dry – attempt to start humid cooking mode
70	Cooling fan error
71.X	Power supply fault -1: General failure; -2: Undervoltage (<170V)
72	eSTB for HA or steam: Blink code on eSTB – error code, see description below
73.x	Fault due to overtemperature on: -1 Motor top; -2 Motor bottom; -4 Motor centre; -8 Pump PCB; -16 Ignition box; -32 I/O power supply
75.x	Internal bus interface: -1: Additional PCB energy optimization not detected; -2: Additional PCB 4-way relay is not detected, -4 (USA ONLY) voltage switching PCB is not detected
76.xx	USA units ONLY Error voltage switching PCB -1: Voltage too low; -2: Internal check failed; -3 incorrect voltage setting 4 to -7: Internal error
90	Unit not yet calibrated, carry out calibration
110	SC pump faulty while care solution is in the steam generator (Remove error and set to released under Basic settings "Cleaning unlock")
120	Level electrode without signal while care solution is in the steam generator (Remove error and set to released under Basic settings "Cleaning unlock")
121	Additional function when operating the unit without water: Note on filling water into the control box
140	Permanent fault in the gas supply or in the hot air gas combustion system; -4 Pre-warning for cooking operation block; -8 Cooking operation block
200	Automatic motor positioning failed (mostly followed by error 201)
201	Carry out motor positioning
900.xx	-8: Initialise date and time failed; -16: Battery empty or removed; -32: Data loss due to battery voltage; -48: Battery removed, unit data and clock initialisation incorrect (summary of errors -16 and -32); -64: System not able to write calibration data to memory; -512: Read error internal data due to timeout
1000	Water low; Check water supply
1016	USB stick is already described
1017	USB stick faulty
1018	Error writing recovery file
1022	no water during the switch-on routine (via CDS measurement)
1024	Programme termination due to a faulty core probe
1025	Programme up- and download faulty due to error in EEP- ROM
1026	Programme upload not possible due to incorrect programme creation
1028	Data from outside Connected Cooking cannot be processed.
1029	Incorrect gas blower speed
1033.x	System Healthy x faulty: -1: incompatible software I/O PCB; -2: Unknown software I/O PCB; -3: Check BUS system From software 5.0.X: Pressing button "1" (see previous page) shows the relevant bus node
2000.x	Software update error: -1: Time out exceeded; -2-3: Max. update time exceeded; -4: Unit in diagnosis or self test; -5: Update attempt during cooking; -6: Update attempt during shutdown routine; -7: Update attempt in show mode

ERROR CODES REMOVED FROM SOFTWARE VERSION 5.0X

Service	Check and replace if necessary
1001	Gas reset, check gas supply
1002	Check the power supply and polarity
1003	There is a lack of water for > 15 minutes
1010	Check the air filter
1011	Check the battery
1012	Carry out humidity calibration
1018	Error UltraVent hoods
1020	Motor error
1021.x	Energy optimisation module faulty: -1-2: 4-way relay faulty; 3: USA voltage incorrect
1024	Termination due to a faulty core probe

SOFTWARE UPDATE

Switch on the unit.
Connect the USB stick with the latest software to the USB interface.
Software update starts automatically.
Switch the unit off after a successful software update.
Remove the USB stick.

SERVICE LEVEL ACCESS (DIAGNOSIS, SETTINGS, RUNTIMES)

Press the keys in the stated order.
Enter the password "TECLEVEL" in the entry window.
Confirm by clicking on the green tick. The diagnostic programme opens.

I/O PCB A10: DIAGNOSTIC LED

Red diagnostic LED on the rear side A10:

Code 1	1x flash	Input voltage error
Code 2	2x flashes	Communication error A10 processor
Code 3	3x flashes	Fault on/off processor
Code 4	4x flashes	Input voltage too high
Code 5	5x flashes	Input voltage too low
Code 6	6x flashes	Mains frequency outside the tolerance
Code 7	7x flashes	Self-test A10 failed

3 green diagnostic LED on the front side A10: see training manual

eSTB A15/A16: DIAGNOSTIC LED (3 LEDS A, B, C)

The green LED B flashes 16 times:

Flashing with 2 of 16 signals	Input voltage short circuit
Flashing with 13 of 16 signals	Mains frequency not in the target range 45 – 65 Hz
Flashing with 14 of 16 signals	Input voltage below expected level of 140 V
Flashing with 15 of 16 signals	Input voltage above the expected level of 278 V
Flashing with 16 of 16 signals	The reset button was pressed too long during normal eSTL operation > Attempt reset again
Flashing with 3 – 12 of signals	Internal eSTL error > Replace eSTL info: a reset is recommended.,

Further details: See training manual

After solving the problem: Reset eSTL, press the reset button for three seconds.
Blink codes flash more than 8 times: This is most often due to the power supply to the unit (e.g. connection to generator)