EN
L-L 274.00-BM
FAULT
CAUSE
REMEDY
• The heater does not start:
lamp
is off
• No power supply
• Check functioning and position of switch
• Check the mains
• Check power connections
• Check fuse
• The heater does not start:
lamp
is on
• Switch (a) in wrong position
• Select correct position
• Incorrect functioning of the room thermostat
• Check that thermostat connection plug is inserted
• Check thermostat electrical connection
• Check thermostat setting and correct it
• Check functioning of thermostat
• The heater works erratically and the burner
goes on and off alternately:
• Insufficient or no fuel at burner
• Check condition of pump-motor coupling
• Check for air infiltrations in fuel circuit by checking
air-tightness of pipes and filter seal
• Clean nozzle or replace if necessary
• Burner thermostat has tripped due to
overheating
• Check correct position of air distribution channels
and opening of any flaps, openings, etc.
• Remove any foreign bodies trapped in the air ducts or
ventilation grilles
• The heater does not work:
the
lamp on the electrical panel is on
• Manual reset safety thermostat has tripped due
to excessive overheating of combustion
chamber
• Check that the fan motor starts correctly and is not
obstructed
• Check that the fan motor is not burned out or that the
motor condenser is not broke
• Check burner calibration
• Check the path and correct discharge of fumes
The heater does not work:
the lamp
on the electrical panel is on
• Motor thermal protection has tripped due to
excessive electrical power absorption
• Remove any foreign bodies trapped in the air ducts or
suction grilles
• Make sure the length of the air supply hoses are not
too long
• The heater does not work::
the
lamp
on the burner is steady on
• Burner's safety equipment has tripped
• Refer to the burner manual for diagnosis and causes
• Fan noise or vibrations
• Foreign bodies on fan blades
• Remove foreign bodies
• Insufficienct air circulation
• Eliminate all possible obstacles to proper air flow
• Insufficient heating
• Insufficient burner capacity
• Contact Customer Service
