Swift Motorhome Owners Service Manual page 113

T R U M A COMB I FAU LTS
Troubleshooting instructions
(Combi Gas heater)
Error code
#17
#18
#21
#24
#29
#41
#42
#43
#44
#45
#112
#212
#255
112
Cause
• Summer mode with empty water
container
• Warm air outlet blocked
• Circulated air intake blocked
• Gas pressure regulator frozen
• Too much butane in the gas
cyclinder
• Room temperature sensor or
cable faulty
• Potential under-voltage battery
voltage too low <10.4V
• Heating element for FrostControl
has a short circuit
• Electronics are blocked
• Window above the cowl is open
(window switch)
• Over-voltage > 16.4V
• Under-voltage battery voltage too
low < 10.0V
• No 230V operating voltage
• Faulty 230V fuse
• Overheating protection has trig-
gered
• Gas cyclinder or quick-acting valve
in the gas line closed
• Combustion air intake or exhaust
outlet closed
• No connection between the heater
and the control panel
• Control panel cable faulty
Remedy
• Switch device off and allow to cool.
Fill boiler with water
• Check each of the outlet openings
• Remove the blockage from the
circulated air intake
• Use the regulator heating (EisEx)
• Use propane (Butane is unsuitable
for heating, especially at tempera-
o
tures below 10 C
• Please contact the Truma Service
• Charge battery
• Disconnect the heating element
plug on the electronic control unit.
Replace heating element
• Please contact the Truma Service
• Close the window
• Check the battery voltage and volt-
age sources eg. the charger
• Charge battery. Replace any
old batteries
• Reconnect the operating voltage
230V
• Replace the 230V fuse
• Reset the overheating protection.
Allow the heating to cool down,
remove the connection cover and
press the reset button
• Check the gas supply and open
the valves
• Check the openings for soiling
(snow, ice, leaves etc) and remove
• Please contact the Truma Service