Instruction manual

242 T-Modell - 13/14 - Ausgabe 08/13 - 2354677 - BUE-0029-14EN
Troubleshooting
14
14.6.2 Truma heater/boiler (diesel heater)
Yellow indicator lamp on
the energy selector
switch does not illumi-
nate
No supply voltage Check 230 V connection
and fuses
Overheating switch was
triggered
Press overheating switch
Boiler empties, safety/
drainage valve has
opened
Internal temperature be-
low 8 °C
Heat inside
Safety/drainage valve
cannot be closed
Temperature at safety/
drainage valve below
8°C
Heat inside
Red and green indicator
lamps are not lit
Fuse is defective Replace fuse on the
transformer/rectifier
Fan wheel runs noisily or
not steadily
Fan wheel is soiled Contact Truma service
department
Fault Cause Remedy
No indicator lamp comes
on after switching on
Fuse on the transformer/
rectifier is defective
Replace fuse on the
transformer/rectifier
Fuse in the electronic
control unit of the boiler is
defective
Replace the fuse on the
appliance. Call customer
service if the fuse blows
again
No operating voltage Charge or replace the liv-
ing area battery (or have
it charged or replaced)
Check all plug connec-
tors
Heater does not ignite
(green indicator lamp
comes on)
Room temperature is
higher than the preset
temperature range
Set a higher temperature
range
Temperature sensor de-
fective
Contact customer service
Red indicator lamp
"Fault" is flashing
Operating voltage too low Charge or replace the liv-
ing area battery (or have
it charged or replaced)
Warm air louvres blocked Open air outlet louvres
Air circulation suction
system blocked
Remove blocking of air
circulation suction sys-
tem
Red indicator lamp
"Fault" illuminates
Summer operation with
boiler empty
Fill the boiler with water
Combustion air inlet or
exhaust gas outlet
blocked
Remove blockage (e.g.
snow or dust)
Low fuel Fill tank with fuel
Wrong fuel Replace fuel
Fault Cause Remedy