9. Troubleshooting
PROBLEM
CAUSE
REMEDY
Motor does not start
No power or low voltage
Faulty or damaged power cord
Faulty motor/capacitor
Lock-out of appliance due to previous
overheating
Check power line and voltage*
Check fuse and replace if necessary*
Check and replace if needed*
Check and if necessary replace*
Detect the cause of overheating
Shut the appliance down
Check air inlet and outlet
Wait some minutes and restart the appliance
Motor runs, but the
heater does not ignite
and locks out after a
short time
Empty fuel tank, dirty or wrong fuel
Ignition fault, dirty or incorrect electrods
position
Remove wrong or dirty fuel
Fill the tank with clean Diesel or kerosene
Check and clean electrods*
Fuel filter clogged
Clean or replace fuel filter*
Burner nozzle clogged
Clean nozzle blowing compressed air, replace if
necessary*
Fuel viscosity increased at low temperature
Mix Diesel with 10-20% kerosene
Heater starts but
combustion is not
good
Insufficient airflow into combustion
chamber
Wrong fuel pressure
Leaks in fuel line
Check air inlet, fan*, motor* and air collar
position, adjust it if necessary.
Check fuel pressure, adjust it if needed*
Check and fix fuel leaks*
Heater stops during
operation
The room temperature set on room
thermostat has been reached
Normal operation
To start turn the temperature control knob
clockwise on a higher setting
Heater stops during
operation
Flame failure
Bad combustion
Reduced airflow
Overheating
Check and remove the cause(s) of malfunction
To reset, turn On/Off switch to 0 and then to I
Call technical service if the problem persists
E1 displayed on the
screen
E2 displayed on the
screen
E3 displayed on the
screen
The photocell can’t read the flame signal
Ambient temperature probe is broken or
not properly connected
Overheating thermostat is stopping the
heater
Check and remove the cause(s) of malfunction
To reset, turn On/Off switch to 0 and then to I
Call technical service if the problem persists
