Error Codes - COMBITHERM CT PROformance Series Installation Manual

e r r o r c o D e s
ALWAYS check the circuit breaker is turned "ON" and your unit is receiving power BEFORE calling your
Authorized Alto-Shaam Service Agent.
This section is provided for the assistance of qualified and trained service technicians only and is not
intended for use by untrained or unauthorized service personnel. Do not attempt to repair or service
the oven beyond this point. Contact Alto-Shaam for the nearest authorized service agent. Repairs
made by any other service agents without prior authorization by Alto-Shaam will void the warranty.
When the oven malfunctions, an error code will appear in the display.
PRESS THE START ICON TO ACKNOWLEDGE THE ERROR.
When the oven error notification has been acknowledged, the Combitherm will attempt to return
to normal operation.
error error call out in Display
code
e01 Low Water Boiler
e02 Control Temperature High
e03 Fan Motor Error
e04 Lower Fan Motor Error
e05 VFD Comm Failure
COMBITHERM CT PROFORMANCE AND CT CLASSIC SERIES • INSTALLATION MANUAL • MN-35947 • 68.
troubleshooting
N O T I C E
Description of error
Upper water level probe B1 is
not satisfi ed within 5 minutes,
after water solenoid valve Y1
is activated.
Low voltage relay board
temperature higher than
176°F (80°C).
Fan motor does not spin after
60 seconds, detected by the
Hall Sensor.
Error 03 does not appear if
error E53 is detected fi rst.
Lower Fan motor does
not spin after 60 seconds,
detected by the Hall Sensor.
Error 04 does not appear if
error E54 is detected fi rst.
When VFD does not respond
to a query on the CAN
interface.
possible cause(s)
— Water supply is shut off.
— Low water pressure.
— Boiler drain cap is missing.
— Boiler drain pump is defective.
— Drain pump elbow leaking.
— Water level probe has calcium build up.
— Double water solenoid valve is defective (Y1).
— Relay board, high voltage is defective.
— Check wiring to all components listed below.
— Cooling fan on relay board assembly is
defective.
— Cooling fan on display board assembly is
defective.
— Main cooling fan is defective.
— Cooling fan on motor drive is defective.
— Check wiring to all components listed below.
— If LED on motor control fl ashes, see error codes
for motor control.
— Motor or fan wheel locked.
— Hall sensor does not detect motor rotation.
— Motor Thermo Temperature protection.
— Fan wheel damaged.
— Check wiring to all components mentioned
below.
— If LED on motor control fl ashes, see error codes
for motor control.
— Motor or fan wheel locked.
— Hall sensor does not detect motor rotation.
— Motor Thermo Temperature protection.
— Fan wheel damaged.
— Loss of power to VFD.
— VFD malfunction.
— CAN cable disconnected.
— CAN address not correct on VFD.
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