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Troubleshooting guide (Combi Gas heater)
Flashing code at the analogue CP classic control panel
Flash sequence LED:
– On / Off: 0.5 seconds
Pause between flash sequence: 5 seconds
Fault Cause Remedy
No LED is on, the appliance is
switched on and is supplied with op-
erating voltage
– Automatic restart is blocked, e.g.
after a power failure.
– Reset (fault reset) by switching off, waiting 5 seconds and
then switching on again
No LED illuminates after switching on – No operating voltage
– Appliance fuse or vehicle fuse
defective
– Check 12 V battery voltage, charge battery if necessary
– Check all electrical plug connections
– Check fuse of appliance or vehicle and replace if necessary
(see fuses)
The green LED illuminates when
the appliance is switched on, but
the heater does not operate
– The temperature setting on the con-
trol panel is lower than the room
temperature
– Select higher room temperature at the control panel
After switching on the heater, the
green LED illuminates and the
yellow LED flashes 1 x
(heater continues operating)
– Risk of low voltage
Battery voltage too low
< 10.4 V
– Charge battery
yellow LED flashes 2 x
(heater not functioning)
– Low voltage
Battery voltage too low
< 10.0 V
– Charge battery. If necessary replace old battery
– Overvoltage > 16.4 V – Check battery voltage and voltage sources such as
the charger
yellow LED flashes 3 x
– Open window above cowl
(window switch)
– Close window
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