Truma Combi 2/4 Fault Finding - Swift Tourer Owner's Handbook Manual

Fault
After switching on (winter and
summer operation) none of
the LEDs are lit.
The green LED comes on
when the unit is switched
on but the heater does not
operate.
After the heater is switched
on, the green LED is lit and
the red LED blinks.
Approximately 30 seconds
after the heater is switched
on, the red LED is lit.
After operating for a longer
period of time, the heater
switches to failure.
Green and red LEDs blink
after heater is switched off
Green LED blinks after heater
is switched off
TRU MA COM BI BO ILE R FA U LT FIN DIN G
Cause
- No operating voltage
- Device fuse or vehicle
fuse defective
- The temperature setting on
the control panel is lower
than the room temperature
- Electronics are defective
- Gas cylinder gas shut off
valve at the manifold is
closed
- Combustion air infeed or
exhaust outlet is sealed
- Summer operation with
empty water tank
- Hot air outlets blocked
- Recirculated air intake
blocked
- Gas pressure regulator
iced up
- Butane content in the gas
cylinder too high
- Unit was switched off during
failure. After running is
active in order to reduce the
unit's temperature
- After running is active in
order to reduce the unit's
temperature
Rectification
- Check 12 V battery
voltages, change if
necessary.
- Check all electrical plug
connections
- Check the unit or vehicle
fuse and replace if
necessary (see fuses)
- Select higher room
temperature at the control
panel
- Please contact the Truma
Service Centre
- Check gas supply and
open valves
- Inspect opening for
contamination (slush, ice,
leaves, etc.) and remove
contamination if necessary
- Switch device off and allow
to cool. Fill boiler with water
- Check individual outlet
aperture
- Remove blockage from
recirculated air intake
- Use regular heating (EisEx)
- Use propane (at
temperatures below 10˚C
in particular, butane is
unsuitable for healing
purposes
- After running will switch off
after a few minutes. Only at
that time will a failure reset
be possible (switch off and
then back on)
- No failure. After running
will switch off after
approximately 5 minutes
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