16
Troubleshooting guide, Truma VarioHeat
Flashing code on the analog CP classic control panel
Flashing sequence
- On / Off
0.5 seconds
Pause between flashing sequence 5 seconds
Fault
Cause
Remedy
LEDs do not light up,
appliance is switched
on, operating voltage
present
– Automatic restart is blocked, e.g.
after a power failure
– Reset (fault reset) by switching off, wait for 5 seconds and
then switch on again
No LED illuminates
after switching on
– No operating voltage
– Check 12 V battery voltage, charge battery if necessary
– Check plug connections
– Appliance fuse or vehicle fuse
defective
– Check fuse of appliance or vehicle and replace if necessary
The green LED lights
up after switching on,
but the heater does
not operate
– The temperature set on the con-
trol panel is lower than the room
temperature
– Select a higher room temperature on the control panel
Red LED flashes 1 x
After operating for a
longer period of time,
the heater switches
to fault
– Gas cylinder or quick-acting valve
in the gas supply line closed
– Gas cylinder empty
– Gas pressure regulation system
iced up
– Butane content in the gas cylinder
too high
– Combustion air infeed or exhaust
outlet is sealed
– Check gas supply and open valves
– Replacing a gas cylinder
– Use EisEx regulator heater
– Use propane (butane is unsuitable for heating, particularly
at temperatures below 10 °C)
– Inspect openings for obstructions (slush, ice, leaves, etc.)
and remove any obstructions
Red LED flashes 2 x
– Heater fault
– Contact Truma Service
After the heater is
switched on, the
green LED is lit and
the
red LED flashes
3 x
– Risk of low voltage, battery voltage
too low < 10.4 V
– Low voltage, battery voltage too
low < 10 V
– Overvoltage > 16.4 V
– Charge battery
– Charge battery and replace old battery if necessary
– Check the battery voltage and voltage sources such as the
charger
Red LED flashes 4 x
– Open window above cowl (win-
dow switch)
– Close windows
Red LED flashes 5 x
– Warm air outlets blocked
– Circulated air intake blocked
– Remove blockage
– Remove blockage
Red LED flashes 6 x
– Motor wear limit will be reached
soon
– 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.
