Alto-Shaam COMBITHERM CTC Series Operation, Maintenance, Troubleshooting, Wiring Diagrams page 55

Error Codes
Error Error Call Out in Display
Code
E06
Lower VFD Comm Failure
E07
Error Received from VFD
E08
Error Received from Lower
VFD
E11 Convection Temperature High
E13
Boiler Temperature High
E15
Condensor Temperature High
E20
B11 Core Temperature Probe
Single Point Fault
E21
N6 Cavity Probe Fault
E22
B10 Core Temperature Probe
Multi-point Fault
M N - 3 5 9 4 9 • R e v 0 4
Description of Error
When VFD does not respond to a
query on the CAN interface.
When VFD is flashing the green
light
When VFD is flashing the green
light
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
Boiler temperature is more than
248ºF (120ºC) for more than 25
seconds, detected by B4 Probe
Condensor water temperature
is more than 212ºF (100ºC) for
more than 180 seconds, detected
by B3 probe
Single point core temperature
probe defective or disconnected
Cavity temperature probe
defective or disconnected
Multipoint core temperature
probe defective or disconnected
• 0 6 / 1 6 • C o m b i t h e r m ® C T P R O f o r m a n c e ™ S e r i e s
Possible Cause(s)
— Loss of power to VFD.
— VFD malfunction.
— CAN cable disconnected.
— CAN address not correct on VFD.
— Refer to VFD error code list and match to number of blinks
on the green LED of VFD.
— Refer to VFD error code list and match to number of blinks
on the green LED of VFD.
— 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.
— 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.
— 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.
— 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.
— N6 oven cavity temperature probe defective.
— N6 oven cavity temperature probe wires.
— B10 multipoint core temperature probe defective.
— B10 multipoint core temperature probe wires disconnected.
• T e c h n i c a l S e r v i c e M a n u a l
Error Codes
continued on next page
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