E R R O R C O D E S
MN-36008 (Rev. 8) 01/16 • COMBITHERM CT EXPRESS • C-4
Error
Code
Error Call Out in Display
Description of Error
Possible Causes
E01
Low Water Boiler
Low water level in boiler
— Water supply is shut off.
— Low water pressure.
— Generator drain cap/hose missing or leaking.
— Generator drain pump is defective.
— Generator drain pump elbow leaking.
— Fill solenoid not energized.
— Fill solenoid faulty.
— Wiring or connection error at the solenoid or the
relay board.
— Water level probe connection/wiring error at
probe or relay board.
— Water level probe requires descaling and/or
replacement.
E02
Control Temperature High
Relay board surface
temperature too high
— Cooling fan(s) not being energized
.
— Cooling fan(s) faulty.
— Wiring/connection error at cooling fan(s).
— Faulty relay board.
E03
Convection Fan Motor Error
Convection fan motor failure
— Motor VFD not energized.
— No input signal to VFD from relay board.
— Motor VFD faulty, not outputting to motor after
input signal received.
— Motor fan wheel blocked/obstructed.
— Connection/wiring error at VFD, motor, hall effect
sensor, relay board.
— Faulty motor.
E04
Lower Convection Fan
Motor Error
Lower convection fan motor
failure on 20-20 unit
— Motor VFD not energized.
— No input signal to VFD from relay board.
— Motor VFD faulty, not outputting to motor after
input signal received.
— Motor fan wheel blocked/obstructed.
— Connection/wiring error at VFD, motor, hall effect
sensor, relay board.
— Faulty motor.
E R R O R C O D E S
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?
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.
N O T I C E
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.
(CONTINUED ON NEXT PAGE)
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