Troubleshooting - Frico HDI145 Original Instructions Manual

7. TROUBLESHOOTING

In the event of serious anomalies, various safety devices are able to
block the machine's operation and signal the same:
• on the electrical panel
the blocking signal following intervention by safety
thermostat L2: the reset button is located inside the burner
box.
(for three-phase models only) the blocking signal following
intervention by the motor thermal protection: the reset
button is located inside the electrical panel.
FAULT
• The heater does not start:
lamp is off
• The heater does not start:
lamp is on
• The heater works erratically and the burner
goes on and off alternately:
• The heater does not work:
the lamp on the electrical panel is on
The heater does not work:
the lamp on the electrical panel is on
• The heater does not work::
on the burner is steady on
the lamp
• Fan noise or vibrations
• Insufficient heating
EN
CAUSE
• No power supply
• Switch (a) in wrong position
• Incorrect functioning of the room thermostat
• Insufficient or no fuel at burner
• Burner thermostat has tripped due to
overheating
• Manual reset safety thermostat has tripped due
to excessive overheating of combustion
chamber
• Motor thermal protection has tripped due to
excessive electrical power absorption
• Burner's safety equipment has tripped
• Foreign bodies on fan blades
• Insufficienct air circulation
• Insufficient burner capacity
• on the burner
the blocking signal following intervention by the burner's
flame control box.
Warning
NEVER do more than two restarts in a row: unburned fuel
can accumulate in the combustion chamber and suddenly
flare up at the next restart.
If the heater is still not working properly, please contact your
nearest dealer or authorized Service Centre.
• Check functioning and position of switch
• Check the mains
• Check power connections
• Check fuse
• Select correct position
• Check that thermostat connection plug is inserted
• Check thermostat electrical connection
• Check thermostat setting and correct it
• Check functioning of thermostat
• 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
• 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
• 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
• 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
• Refer to the burner manual for diagnosis and causes
• Remove foreign bodies
• Eliminate all possible obstacles to proper air flow
• Contact Customer Service
REMEDY
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