Operating instructions

69
Overheating protection 230 V.
The 230 V heating facility has a mechanical overheating
switch. If the 12 V power supply is interrupted during
operation or during the after-run period, for example,
the temperature within the unit could activate the
overheating protection.
To reset the overheating protection, allow heater to cool,
remove connection cover and press red reset button.
Fault Cause
No LED is shining, the device
is switched on and is supplied
with operating current.
Automatic restart is
blocked, eg after a
power failure.
Reset (fault reset) by switching off, waiting 5 seconds
and then switching on again.
After switching (winter and
summer operation) none of
the LEDs are lit
No operating voltage.
Device fuse or vehicle
fuse defective.
Check 12V battery voltage, charge if necessary.
Check all electrical plug connections.
Check the unit or vehicle fuse and replace if necessary
(see fuses).
The green LED comes on when
the unit is switched on but the
heater does not operate.
The temperature setting
on the control panel is
lower than the room
temperature.
Select higher room temperature at the control panel.
After switching on the heating
system, the green LED shines
and
The red LED ashes with 5 Hz, Open window above
cowl (window switch)
Under-voltage. Battery
voltage is too low <10.0
V.
No 230 V operating
voltage.
230 V fuse defective.
Overheating protection
has activated.
Closewindow.
Charge battery. If necessary replace old battery.
Re-establish 230 V operational voltage.
Replace 230 V fuse.
Reset overheating protection. Allow heater to cool,
remove connection cover and press reset button.
The red LED ashes with 1 Hz, Threatening under-
voltage. Battery voltage
is too low < 10.4 V.
Charge battery.