Fault code reading
If the control unit detects a fault when the heater is turned on, or during operation, the active fault code is shown (F and 3 digits) within 15 seconds in the timer's display.
When reading fault codes: Press the button for heat, the heater starts. Press the button for clock, hold it in and press button P within 2 seconds. Press on the button right arrow once to show fault code 1, press twice to show fault code 2, etc.
When fault codes F015, F016, and F050 are shown, the control unit is put in blocked mode. In order to release the block, the fault codes must be erased.
Erasing fault codes and releasing the blocked mode: Press the heater button. F015, F016, or F050 is shown in the display. Press the button for clock, hold it in and press button P within 2 seconds. Turn on the ignition (15.00 hrs). When - –:- flashes in the display, the heater is to be turned on and off.
Fault codes:
010 Disconnection, overvoltage.
011 Undervoltage.
012 Overheating.
014 Temperature difference between temperature sensor ans safety temperature switch too high.
015 Operational block.
016 Operational block.
020 Glow plug, open circuit.
021 Alternator ignition spark, ground fault.
025 Diagnostic output, short-circuit.
032 Burner motor does not move at start-up.
033 Burner motor does not move during operation.
037 Water pump fault.
039 Relay vehicle fan, short-circuit.
044 Relay water pump, open circuit.
045 Relay water pump, short-circuit.
046 Solenoid valve, open circuit.
047 Solenoid valve, short-circuit.
048 Heater's nozzle holder, open circuit relay.
049 Heater's nozzle holder, short-circuit relay.
050 Operational block for too many start attempts.
051 Flame without fuel.
052 Safety time exceeded.
054 Flame missing during operation.
058 Flame has not gone out during delayed shutdown.
060 Temperature sensor, open circuit.
061 Temperature sensor, short-circuit.
071 Overheating sensor, open circuit.
072 Overheating sensor, short-circuit.
081 Indicator light combustion, short-circuit.
083 Fault indicator light, short-circuit.
090 Control unit failure.
092 Control unit failure.
093 Control unit failure.
094 Control unit failure.
097 Control unit failure.
091 External noise voltage.