WILMS 1251385, Operating Manual

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Before repairing or servicing the heater pull the main plug!
Repair or service of electrical components may only be made by authorized
specialists!!!
6. Trouble Shooting
Fault Cause Remedy
Main switch on position No electricity. Check if there is power.
"Heating" (Heizen). Check main fuse.
Heater does not start. Setting of room Reset thermostat.
thermostat. The preset
temperature is lower than
the ambient temperature.
Safety thermostat Push reset button of
shuts off. safety thermostat.
Restart heater.
Burner starts shortly and
Lack of fuel. Check fuel intake and
shutts off. The red lamp return line.
lights up. Air bubbles in the Check oil level in tank.
suction line. Check if the valve at the
fuel filter is opened.
Push reset button.
On initial start the burner
Lack of fuel. Push the rest button until
runs shortly and shutts off. enough fuel is injected.
Air bubbles in the
suction line.
There is not enough
fuel.
Burner shuts off during
Fuel filter dirty. Clean (replace) fuel
operation. filter.
Photo cell dirty. Clean the photo cell
carefully.
Safety thermostat shuts Sharp bendings in warm Use warm air hoses
off during operation. air hoses. properly. Push reset
button of safety
thermostat. Restart heater.
If your heater does not work properly in spite of these checks, call your nearest
service.
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