hymer BMC 550, Instruction Manual

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14 Troubleshooting
230
B-MC - 12/18-2 - EHG-0016-01EN
14.8 Heater/boiler
In the event of a defect contact the nearest customer service workshop of
the relevant appliance manufacturer. The list of addresses is enclosed with
the accompanying appliance documentation. Only authorised qualified per-
sonnel may repair the appliance.
14.8.1 Heater/boiler with CP plus digital operating unit
Fault Cause Remedy
Heater does not ignite Temperature sensor on
operating unit or remote
sensor defective Pull out plug on operating
unit. The heater then
works without thermostat.
Contact the customer ser-
vice as soon as possible
No display on the operat-
ing unit Fuse on the trans-
former/rectifier is defective Replace fuse on the trans-
former/rectifier
Fuse in the electronic con-
trol unit has been trig-
gered Contact customer service
Living area battery defec-
tive Charge or replace the liv-
ing area battery (or have it
charged or replaced)
Fault with error code is
displayed See table "Fault search in-
struction" See table "Fault search in-
struction"
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 be-
low 8 °C Heat inside
Fan wheel runs noisily or
not steadily Fan wheel is soiled Contact Truma service
department
Error code Cause Rectification
Fault search instruction
# 17 Summer operation
with empty water con-
tainer Switch off the device and allow it to cool
down. Fill the boiler with water
Warm air louvres blo-
cked Check outlet openings
Air circulation suction
system blocked Remove blocking of air circulation suction
system
# 18 Gas pressure regulator
iced up Use regulator heater (defroster if availa-
ble)
Proportion of butane
gas in gas bottle too
high Use propane gas (butane gas is unsuita-
ble for heating especially for temperatures
under 10 °C)
# 21 Room temperature
sensor or cable defec-
tive Contact customer service
# 24 Risk of undervoltage
Battery voltage too low
< 10.4 V Charge the battery