MN-35947
•
Rev 15
•
01/18
•
Combitherm® CT PROformance™ and CT Classic Series Installation Manual
•
75
Troubleshooting – Error Codes
Error
Code
Error Call Out in Display
Description of Error
possible Cause(s)
E11
Convection Temperature High In Combination program, cavity
temperature N6 is measuring in excess
of 572ºF (300ºC) for a minimum of 25
seconds
In Convection program, cavity
temperature N6 is measuring in excess
of 572ºF (300ºC) for a minimum of 25
seconds
– Check wiring to all components mentioned below.
– Steam element contactor locked/on.
– N6 oven cavity temperature probe is defective.
– N6 oven cavity temperature probe wires connected
backwards
– Relay board, high voltage, defective.
E13
Boiler Temperature High
Boiler temperature is more than 248ºF
(120ºC) for more than 25 seconds,
detected by B4 Probe
– Calcium build up in boiler
– Check wiring to all components mentioned below.
– Steam element contactor locked/on.
– B4 boiler temperature probe is defective.
– B4 probe wires connected backwards
– Water level probe has calcium build up.
E15
Condensor Temperature High
Condensor water temperature is more
than 212ºF (100ºC) for more than 180
seconds, detected by B3 probe
– Water supply is shut off .
– Check wiring to all components mentioned below.
– B3 condensor temperature probe is defective.
– B3 condensor probe wires connected backwards
– Single water solenoid valve defective (Y2).
– Relay board, high voltage, defective.
E20
B11 Core Temperature Probe
Single Point Fault
Single point core temperature probe
defective or disconnected
– Clean probe receptacle pins with sand paper.
– B11 Single Point Core Temperature probe with quick
connect defective.
– B11 Single Point Core Temperature probe wires with quick
connect disconnected.
– B11 Single Point Core Temperature probe receptacle
defective.
– B11 Single Point Core Temperature probe receptacle wires
disconnected.
E21
N6 Cavity Probe Fault
Cavity temperature probe defective or
disconnected
– N6 oven cavity temperature probe defective.
– N6 oven cavity temperature probe wires.
E22
B10 Core Temperature Probe
Multi-point Fault
Multipoint core temperature probe
defective or disconnected
– B10 multipoint core temperature probe defective.
– B10 multipoint core temperature probe wires disconnected.
E23
B4 Boiler Probe Fault
Boiler temperature probe defective or
disconnected
– B4 boiler temperature probe defective.
– B4 probe wires connected backwards.
E24
B5 Bypass Probe Fault
Bypass steam temperature probe
defective or disconnected
– B5 bypass steam temperature probe defective.
– B5 bypass steam temperature probe wires connected
backwards.
E25
B3 Condensor Probe Fault
Condensor water temperature probe
defective or disconnected.
– B3 condensor temperature probe defective.
– B3 condensor probe wires connected backwards.
E26
B10 - Point 1 - Core
Temperature Probe Multipoint
Fault
Multipoint core temperature probe
defective or disconnected.
– B10 Multipoint Core Temperature probe defective.
– B10 Multipoint Core Temperature probe wires disconnected.
E27
B10 - Point 2 - Core
Temperature Probe Multipoint
Fault
Multipoint core temperature probe
defective or disconnected.
– B10 Multipoint Core Temperature probe defective.
– B10 Multipoint Core Temperature probe wires disconnected.
E28
B10 - Point 3 - Core
Temperature Probe Multipoint
Fault
Multipoint core temperature probe
defective or disconnected.
– B10 Multipoint Core Temperature probe defective.
– B10 Multipoint Core Temperature probe wires
disconnected.
E29
B10 - Point 4 - Core
Temperature Probe Multipoint
Fault
Multipoint core temperature probe
defective or disconnected.
– B10 Multipoint Core Temperature probe defective.
– B10 Multipoint Core Temperature probe wires
disconnected.
E34
Steam Generator Drain Pump
Fault
If water level does not drop below lower
water level probe aft er three minutes
when steam generator drain pump is
activated in cleaning program.
– Calcium build up in steam generator drain pump.
– Boiler drain pump defective.
– Relay board, high voltage, defective.
– Water level probe defective.
Error
Code
Error Call Out in Display
Description of Error
possible Cause(s)
E36
Steam Temperature High
In Steam program, cavity temperature
N6 is measuring in excess of 395ºF
(200ºC) for more than 60 seconds.
In Combination program, cavity
temperature N6 is measuring in excess
of 520ºF (270ºC), for more than 60
seconds.
In Retherm program, cavity
temperature N6 is measuring in excess
of 395ºF (200ºC), for more than 60
seconds.
In Cleaning program, cavity
temperature N6 is measuring in excess
of 395ºF (200ºC), for more than 60
seconds.
– Water supply is shut off .
– Low water pressure.
– Water injection pipe, calcium build up.
– Water flow valve defect or calcium build up.
– Double water solenoid valve defective (Y1).
– Relay board, high voltage, defective.
E40
B3 Fault
B3 probe shorted to ground
– Defective or miswired probe.
E41
B4 Fault
B4 probe shorted to ground
– Defective or miswired probe.
E42
B5 Fault
B5 probe shorted to ground
– Defective or miswired probe.
E43
N6 Fault
N6 probe shorted to ground
– Defective or miswired probe.
E44
N8 Fault
N8 probe shorted to ground
– Defective or miswired probe.
E45
B10 Fault
B10 probe shorted to ground
– Defective or miswired probe.
E46
B10 - Point 1 Fault
B10 probe shorted to ground
– Defective or miswired probe.
E47
B10 - Point 2 Fault
B10 probe shorted to ground
– Defective or miswired probe.
E48
B10 - Point 3 Fault
B10 probe shorted to ground
– Defective or miswired probe.
E49
B10 - Point 4 Fault
B10 probe shorted to ground
– Defective or miswired probe.
e51
No Water In Boiler
Lower water level probe B2 is not
satisfied within 5 minutes, aft er water
solenoid valve Y1 is activated
– Water supply is shut off .
– Low water pressure.
– Boiler drain cap missing.
– Boiler drain pump defective.
– Drain pump elbow leaking.
– Water level probe has calcium build up.
– Double water solenoid valve defective (Y1).
– Relay board, high voltage, defective.
e53
Fan Motor High Temperatures
Fan motor does not spin, result in over-
heating, detected by motor coil safety
thermo element. Temperature more
than 320°F (160°C).
– Motor high limit open or wired incorrectly.
– If LED on motor control flashes, see error codes for motor
control.
– Motor or fan wheel locked.
– Fan wheel damaged.
e54
Lower Fan Motor High
Temperature
Lower fan motor does not spin, result
in over-heating, detected by motor coil
safety thermo element. Temperature
more than 320°F (160°C).
– Motor high limit open or wired incorrectly.
– If LED on motor control flashes, see error codes for motor
control.
– Motor or fan wheel locked.
– Fan wheel damaged.
e55
Vent Not Open (Lower vent on
dual vent system)
60 seconds aft er the venting motor is
activated the vent motor safety switch
did not open.
– Alignment issue between motor cam and vent motor safety
switch (micro switch).
– Faulty vent valve (motor).
– Faulty vent valve safety switch (micro switch).
e56
Vent 2 Not Open (Upper vent
on dual vent system)
60 seconds aft er the venting motor is
activated the vent motor safety switch
did not open.
– Alignment issue between motor cam and vent motor safety
switch (micro switch).
– Faulty vent valve (motor).
– Faulty vent valve safety switch (micro switch).
e57
No Rinse Water
Flow switch for solenoid valve Y4
does not detect any water flow for a
minimum of 60 seconds.
– Water supply is shut off .
– Low water pressure.
– Flow switch is dirty or defective.
– Double water solenoid valve defective (Y3).
– Relay board, high voltage, defective.