CT ExprEss sTEp by sTEp opEraTion
MANUAL •
46
T r o u B L E s h o o T I N G
Error coDEs
This section is provided for the assistance of qualified technicians only and is not intended for use by
untrained or unauthorized service personnel. If your Alto-Shaam
®
unit is not operating properly, check the
following before calling your Authorized Alto-Shaam Service Agent:
☛
Check that unit is receiving power . Circuit breaker turned on?
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 on the unit.
When the oven malfunctions, an error code will appear in the display .
PRESS THE START ICON TO ACKNOWLEDGE THE ERROR.
The icons that begin to flash represent operational modes that are still usable .
When the oven fault is corrected, the Combitherm will return to normal operation .
Error
code
Error call out in Display
Description of Error
possible cause
E01
Low Water boiler
Low water level in boiler
— Water supply is shut off.
— Low water pressure.
— Generator drain cap missing or loose.
— Generator drain pump is not sealing.
— Generator drain pump elbow leaking.
— Faulty or scaled water level probe.
— Faulty or plugged dual solenoid valve assembly.
— Wiring or connection issue.
— no output to dual solenoid from relay board.
— relay board, high voltage is not operating.
E02
Control Temperature High
relay board surface
temperature too high
— Wiring or connection issue.
— Cooling fan on relay board assembly is
not operating.
— Cooling Fan on display board is not operating.
— Main Cooling fan is not operating.
— Cooling Fan on motor drive is not operating.
— Unit is less than 20” from a heat producing source
on its left hand side.
E03
Fan Motor Error
Fan motor does not work
— Exhaust hood is not operating properly.
— Check LED fl ashes on the Motor Control.
—
see Motor control Error code list
.
— Connection issue on Hall Effect sensor.
— Fan whel is not operating.
— Hall sensor does not detect motor rotation.
E04
Fan Motor 2 Error
Lower fan motor on 20•20
does not work
— Exhaust hood is not operating properly.
— Check LED fl ashes on the Motor Control.
—
see Motor control Error code list
.
— Connection issue on Hall Effect sensor.
— Fan wheel is not operating.
— Hall sensor does not detect motor rotation.
E11
Convection Temperature
High
Excess oven temperature
Convection Mode & Combi Mode:
— Convection oven contactor(s) stuck closed.
— n6 oven Cavity Temperature probe defective.
— n6 Cavity probe connection problem.
— relay board, high voltage is not operating.
— Wiring or connection issue.
Combi Mode only:
— insuffi cient water supply into oven for
steam production.
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