trouble shooting
COMBITHERM® CT PROFORMANCE™ SERIES • STEP-BY-STEP PROCEDURES • MN-35948 • 55.
Error
Code
Error Call Out in Display Description of Error Possible Cause
E07
Error Received from VFD When VFD is fl ashing the
green light
— Refer to VFD error code list and match to
number of blinks on the green LED of VFD.
E08
Error Received from Lower
VFD
When VFD is fl ashing the
green light
— Refer to VFD error code list and match to
number of blinks on the green LED of VFD.
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.
ERROR CODES
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