Troubleshooting 14
B-MC - 12/18-2 - EHG-0016-01EN
231
Error
code
Cause
Rectification
# 29
Short circuit in heating
element for frost con-
trol
Remove plug of heating element on elec-
tronic control unit. Replace heating ele-
ment
# 41
Electronics blocked
Contact customer service
# 42
Safety switch has trig-
gered
(Not used here)
# 43
Overvoltage > 16.4 V
Check battery voltage and voltage
sources (e.g. charger)
# 44
Undervoltage
Battery voltage too low
< 10.0 V
Charge battery. Replace outdated battery
if required
# 45
No 230 V power
supply
Check external mains connection
230 V automatic circuit
breaker has triggered
Switch on 230 V automatic circuit breaker
Overheating protection
has triggered
Reset overheating protection. Allow
heater to cool, remove connection cover
and press reset button
#112, #202,
#121, #211
Lack of gas
Open regulator tap and gas isolator tap
Connect a full gas bottle
#122,
#212
Combustion air inlet or
exhaust gas outlet
closed
Check openings for dirt (slush, ice, leaves
etc.) and clean if necessary
#255
No connection be-
tween heater and op-
erating unit
Contact customer service
Cable defective
Contact customer service
If these measures do not rectify the fault, contact customer service.
14.8.2 Alde
heater/boiler
If a fault occurs in the system, the cause is shown on the display.
Fault
Cause
Remedy
Heater 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 bat-
tery voltage rises above
11 V, the heater is
switched on automatically
Heater does not ignite at
230 V electrical operation
No 230 V power supply
Switch on 230 V auto-
matic circuit breaker
Connect 230 V power
supply
Summary of Contents for BMC 550
Page 2: ...Instruction manual 2 B MC 12 18 2 EHG 0016 01EN...
Page 8: ...Checklist before first journey of the vehicle 8 B MC 12 18 2 EHG 0016 01EN...
Page 12: ...1 Introduction 12 B MC 12 18 2 EHG 0016 01EN...
Page 20: ...2 Safety 20 B MC 12 18 2 EHG 0016 01EN...
Page 54: ...4 During the journey 54 B MC 12 18 2 EHG 0016 01EN...
Page 140: ...8 Electrical system 140 B MC 12 18 2 EHG 0016 01EN...
Page 172: ...9 Appliances 172 B MC 12 18 2 EHG 0016 01EN...
Page 186: ...10 Sanitary fittings 186 B MC 12 18 2 EHG 0016 01EN...
Page 202: ...11 Care 202 B MC 12 18 2 EHG 0016 01EN...
Page 224: ...13 Wheels and tyres 224 B MC 12 18 2 EHG 0016 01EN...
Page 240: ...16 Technical data 240 B MC 12 18 2 EHG 0016 01EN...
Page 242: ...17 Instructions for the service partner 242 B MC 12 18 2 EHG 0016 01EN...