Operation Manual

DD
Troubleshooting 21
Adria Motorhomes 163
21.6 Truma Combi and Truma Combi E heater faults
Tab. 21-10 Truma Combi and Truma Combi E heater faults
Important!
Consult an authorised workshop if the listed measures are not successful.
Fault Possible cause Remedy
LEDs do not light. No supply voltage. • Check battery voltage (12 V).
• Check all electric connectors
and fuses.
Green LED lights but
heater does not oper-
ate.
The temperature setting on
the control panel is lower than
the room temperature.
• Set the temperature on the
control panel higher.
Green LED lights and
red LED blinks.
Battery voltage is too low. • Charge the battery.
The red LED goes on
approx. 30 seconds
after the heater is
switched on.
See Chapter 21.3 "No gas".
After operating for a
longer period of time,
the heater switches to
failure.
Warm air outlet openings
blocked.
• Check and free individual sin-
gle warm air outlet openings.
Gas pressure regulator fro-
zen.
• Use a regulator de-icing sys-
tem (e.g. Eis-Ex as acces-
sory).
Green and red LEDs
blink after heater is
switched off.
Appliance was switched off
during failure. After-running is
active in order to reduce the
temperature.
• After-running will switch off
after a few minutes. The sys-
tem can only be reset after
this time elapses by switching
the system off and on again.
The drain valve
(FrostControl) does
not close.
Temperature on drain valve is
below +3 °C.
• Switch the heater on. If the
heater is not in operation, the
drain valve can only be closed
when the ambient tempera-
ture is above +3 °C.
Drain valve rotary switch not
set to "Operation".
• Turn the drain valve rotary
switch (Fig. 72/2) to "Opera-
tion". Now press the snap but-
ton (Fig. 72/5) on the drain
valve until it engages.