Operation Manual

189Caravan - 09-09 - DET-0030-09EN
Troubleshooting
15
15.6.3 Truma boiler
Fault Cause Remedy
Heating does not ignite
with gas operation
Lack of gas Open regulator tap and
gas isolator tap
Connect a full gas bottle
Heater does not ignite Battery voltage too low Charge battery. If the
battery voltage rises
above 11 V, the heater is
switched on automatical-
ly
Heating does not ignite at
240 V electrical operation
No 240 V power supply Switch on the 240 V au-
tomatic circuit breaker
Connect 240 V power
supply
Heater switches off Overheating Allow the heater to cool.
To reset the display, in-
terrupt the 12 V power
supply to the heater and
switch it back on again
Heating running, but no
heat at the convectors
Circulating pump does
not work
Switch on room thermo-
stat
Contact customer service
Heating and circulating
pump running, but no
heat at the convectors
Air in the heating system Bleed hot-water heater
Fault Cause Remedy
Gas operation
Red indicator lamp
"Fault" illuminates
Air in the gas pipe sys-
tem
Switch off and on again.
After two futile ignition at-
tempts, wait for
10 minutes before trying
again
Lack of gas Open regulator tap and
gas isolator tap
Connect a full gas bottle
Defect of a safety ele-
ment
Contact customer service
Green indicator lamp be-
hind knob is not lit
Fuse of the boiler is de-
fective
Replace fuse
Fuse in the electronic
control unit has been trig-
gered
Contact customer service
Red and green indicator
lamps are not lit
No power supply Establish the power sup-
ply
Fuse of the boiler is de-
fective
Replace fuse