BIEMMEDUE BH 50 Manuel D'instructions page 31

7. TROUBLESHOOTING
In case of serious malfunction, the electronic equipment causes the
heater to go into safety stop, and lamp (d) lights with a steady red
light
Warning
In case of a safety stop, you have to push the reset button
(d) for 3 seconds to restart the heater.
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 combustion chamber overheats, the safety thermostat (7)
trips to shut off the burner and lamp (b) lights: to reset the burner,
you have to shut off the heater completely, cut electrical power,
remove the side inspection panel and push button (7).
Warning
You must always find the cause of the safety intervention
and remove it before pushing reset button (d) or button (7)
and restarting the heater.
If the heater is still not working properly, please contact your
nearest dealer or authorized Service Centre.
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:
lamp goes on and off
• The heater does not work:
lamp is on
L-L 196.00-BM
EN
CAUSE
• No electrical power
• Switch (a) in wrong position
• Defective room thermostat
• Irregular diesel flow
• Burner thermostat has tripped due to
overheating
• Manual reset safety thermostat has tripped due
to excessive overheating of combustion
chamber
a
b
• Check functioning and position of switch
• Check the mains
• Check power connections
• Check the 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 and clean diesel filter.
• Check for any air infiltrations in diesel suction pipes
• Clean and recalibrate the burner.
• 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 broken
• Check burner calibration
• Check the chimney and correct discharge of fumes
e
f
d
7
REMEDY
31 / 52