15
Troubleshooting guide, Truma VarioHeat
Fault Cause
Remedy
# 2
# 16
Flame not recognised:
– Gas cylinder or quick-acting valve in the gas
supply line closed
– Check gas supply and open valves
– Gas pressure regulation system iced up
– Use EisEx regulator heater
– Butane content in the gas cylinder too high
– Use propane (butane is unsuitable for heating, particularly
at temperatures below 10 °C)
– Combustion air infeed or exhaust outlet is
sealed
– Inspect openings for obstructions (slush, ice, leaves, etc.)
and remove any obstructions
# 7
– Room temperature sensor not connected or
cable defective
– Contact Truma Service
# 11
– Temperature cutout has been triggered
– Contact Truma Service
# 25
– Overvoltage > 16.4 V
– Check the battery voltage and voltage sources such as the
charger
# 26
– Low voltage, battery voltage too low < 10 V
– Charge battery and replace old battery if necessary
# 27
– Warm air outlets blocked
– Circulated air intake blocked
– End outlets EN closed up
– Remove blockage
– Remove blockage
– Open end outlets EN
# 28
– Open window above cowl (window switch)
– Close windows
# 29
– Risk of low voltage, battery voltage too low
< 10.4 V
– Charge battery
# 32
– Motor wear limit will be reached soon
– Contact Truma Service
# 255
– No connection between heater and control
panel
– Contact Truma Service
– Control panel cable or main fuse defective
If these measures do not remedy the fault or if fault codes are displayed that you cannot find in the troubleshooting
guide, contact Truma Service.
Troubleshooting guide (air conditioning system)
Fault
code
Cause
Remedy
# 1
Failure (short circuit or broken cable), room temperature
sensor
Contact Truma Service
# 2
Ice sensor failure – internal
Inspect the filter and replace it if necessary
# 4
Ice sensor failure – external (if present)
Keep the air inlets / outlets on the roof free of obstructions such as
leaves
# 8
IR receiver unplugged or cable broken
Contact Truma Service
If these measures do not remedy the fault or if fault codes are displayed that you cannot find in the troubleshooting
guide, contact Truma Service.