OBSERVED FAULTS, CAUSES AND REMEDIES
FAULTS
CAUSES
REMEDIES
• Check power specifications
• Check power connections
• Check fuse
• Main switch in wrong position
• Select correct position
• Check thermostat position
• Check thermostat operation
• Check that the suction and the flow grills are
•
unobstructed
• Check that the fan is running freely
• Check the electric motor and the condenser
•
and, if faulty, replace them
• Air pressure switch tripped due to pressure
•
switch malfunction
• Replace the pressure switch
• The ionisation electrode does not detect a
•
flame
• Remove the flame sensor and clean it
• Check that the suction and the flow grills are
•
unobstructed
• Check that the room is well ventilated
• Check that the hot air can escape freely
• Check that the gas flow or pressure are not
•
excessive
• Control unit tripped due to irregular burner
•
operation
• Contact Service Assistance
• Faulty electronic control unit
• Check the unit and if necessary replace it.
• Faulty thermostat
• Check the thermostat and if necessary
•
replace it
• The heater stops and then starts again
• Burner thermostat tripped
• Air distribution ducts too long or with
•
insufficient diameter
• Foreign bodies on fan blades
• Remove foreign bodies
• Little air circulation
• Eliminate all possible obstacles to proper air
•
flow
• Fan noise or vibrations
• The heater stops and the warning light (1)
•
comes on
• The heater fails to start
• Air pressure switch tripped due to fan malfunction
• No power supply
• Faulty operation of room thermostat
• Safety thermostat tripped due to the combustion
•
chamber overheating
7
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