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OBSERVED FAULTS, CAUSES AND REMEDIES
OBSERVED FAULT
• The heater won't start
• Thermostat L1 cuts in
•
(the lamp (9) light up and then it cuts down)
• Thermostat L2 cuts in
•
(Warning lamp (9) lights up)
• Thermal relay RM cuts in
•
(warning light (10) lights up)
• The burner starts up, the flame doesn't light up
•
and the restart light on the control
•
device comes on
• The fan doesn't start up or starts up late
• The fan vibrates or makes unusual noise
• Not enough heat
CAUSE
• Faulty electrical supply
• Wrong positioning of main switch
• Wrong setting of room thermostat
• Safety device (burner, thermostat L2, fan
•
thermal relay) not restarted after repairs
• The combustion chamber has overheated
• Excessive combustion chamber over heating
• Fan motor current absorption is excessive
• Burner not working correctly
• No electrical power
• F thermostat out of order
• Winding of motor burnt or interrupted
• Condenser burnt (mod. "M")
• Motor bearings blocked
• Extraneous material on fan blades
• Not enough air circulation
• Wrong burner
7
REMEDY
• Check function and positioning of main switch
• Check power cord
• Check electrical connections
• Check fuses
• Put main switch in correct position
• Check setting of room thermostat
• Check function of room thermo-stat
• Press the appropriate restart button:
•• burner (button on control device)
•• thermostat (button (6)
•• fan thermal relay (button (11)
• Check fuel flow
• Check position registers, draw - holes, etc.
• Remove extraneous material from air ducts and
•
ventilation grills
• Check as indicated above
• If fault persists contact our Service Center
• Heater with helicoidal ventilator: remove
•
eventualdebris preventing free flow of air
•
on intake and outlet. Check length of air
•
ducts, reduce if excessive.
• Heater with centrifugal ventilator: check setting
•
of transmission belt as indicated in chapter
•
("CONNECTION TO HOT AIR DUCTS").
• Always check that current absorption remains
•
below value indicated on motor
•
manufacturer plate
• Press the restart button to turn on the heater. If
•
the same problem arises again call an
•
Authorized Service Technician
• Check fuses
• Check electrical connections
• Check the thermostat, set it and replace it if
•
necessary
• Replace the fan motor
• Replace the condenser
• Replace the bearings
• Remove extraneous material
• Remove obstacles to air circulation
• Call an Authorized Service Technician
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