Alto-Shaam COMBITHERM CTC Series Operation, Maintenance, Troubleshooting, Wiring Diagrams page 56

Error Codes
Error Codes
Error Error Call Out in Display
Code
E23 B4 Boiler Probe Fault
E24 B5 Bypass Probe Fault
E25
B3 Condensor Probe Fault
E26
N8 Boiler Safety Temperature
Probe Fault
E27
Boiler Element Temperature
High
E34
Steam Generator Drain Pump
Fault
E36
Steam Temperature High
E40
B3 Fault
E41
B4 Fault
E42
B5 Fault
E43
N6 Fault
E44
N8 Fault
E45
B10 Fault
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Description of Error
Boiler temperature probe
defective or disconnected
Bypass steam temperature probe
defective or disconnected
Condensor water temperature
probe defective or disconnected.
Boiler heating element
protection probe defective or
disconnected.
Boiler protection heat element
temperature detected by N8
probe is more than 266°F (130°C)
for more than 25 seconds, or has
reached 275°F (135°C).
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.
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.
B3 probe shorted to ground
B4 probe shorted to ground
B5 probe shorted to ground
N6 probe shorted to ground
N8 probe shorted to ground
B10 probe shorted to ground
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Possible Cause(s)
— B4 boiler temperature probe defective.
— B4 probe wires connected backwards.
— B5 bypass steam temperature probe defective.
— B5 bypass steam temperature probe wires connected
backwards.
— B3 condensor temperature probe defective.
— B3 condensor probe wires connected backwards.
— N8 boiler temperature probe defective.
— N8 probe wires connected backwards.
— Calcium build up in boiler.
— Check wiring to all components mentioned below.
— Steam element contactor locked/on.
— N8 boiler temperature probe defective.
— N8 probe wires connected backwards.
— Water level probe has calcium buildup.
— Calcium build up in steam generator drain pump.
— Boiler drain pump defective.
— Relay board, high voltage, defective.
— Water level probe defective.
— 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.
— Defective or miss wired probe.
— Defective or miss wired probe.
— Defective or miss wired probe.
— Defective or miss wired probe.
— Defective or miss wired probe.
— Defective or miss wired probe.
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