MN-29805 • Rev 10 • 06/17 • Combitherm CT Express Installation Manual
45
Service
Error
Code
Error Call Out in Display
Description of Error
Possible Causes
E101
DB version is not equal to RB
version. Error generated by RB.
Soft ware update may
have failed.
— Perform soft ware update.
— Ribbon cable defective.
— Faulty compact flash card.
— Relay board, low voltage, connector defective.
— Display board connector defective.
— Soft ware may need to be updated again.
E102
Ventless Hood Fault — Filters
Not Present
Filter safety switches are not
properly activated.
— Grease and/or charcoal filter not installed.
— Faulty filter switch.
— Poor connection at safety switch or relay board.
E103
Ventless Hood Fault — Pressure
Failure
Ventless hood
operation failure.
— Hood power switch not turned to the on position.
— Hood power switch defective.
— Hood fan not operating.
— Filter(s) clogged/need replacement.
— Pressure switch tube plugged or disconnected.
— Faulty pressure switch or connection error/failure.
— Hood fan turning in the wrong direction.
E104
Ignition Failure
Attempt for ignition.
— Gas supply disconnected or turned off .
— Gas supply pressure too low/too high.
— Gas valve not being energized by ignition control.
— Ignition control not creating a spark.
— Faulty spark wire and/or igniter.
— Faulty flame sense wire or sensing wire connection.
— Faulty ignition control.
— Blocked or obstructed flue pipe(s).
E105
Low Water Pressure
Low or no water pressure
to oven.
— Water supply not connected or turned off .
— Water pressure too low.
— Solenoid valve not being energized.
— Solenoid valve not opening.
— Pressure switch faulty.
— Poor connection at pressure switch and/or relay board.
E106
Cleaning Pump Fault
Cleaning pump is
not running.
— Cleaning pump motor not being energized.
— Cleaning pump faulty.
— Poor connection at pump motor and/or relay board.
— Hall eff ect sensor wiring/connection error/failure.
E107
Boiler Drain Pump Fault
Boiler drain pump is
not running.
— Boiler drain pump motor not being energized.
— Boiler drain pump faulty.
— Poor connection at pump motor and/or relay board.
— Hall eff ect sensor wiring/connection error/failure.
Error Codes