Troubleshooting - BIEMMEDUE BH 50 Betriebsanleitung

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 (stop 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.
In case of safety stop, press the reset button (d) for at least 7
seconds to launch a self-diagnosis programme, after which the
button will flash at different rates (Self-diagnosis lamp) according
a
b
d
FAULT
• The heater does not start:
lamp is off
• The heater does not start:
lamp is on
L-L 195.02-BM
EN
f
e
CAUSE
• No power supply
• Switch (a) in wrong position
• Defective room thermostat
• Gas pressure switch tripped due to no gas or
insufficient pressure
to the type of safety intervention: the synoptic on the electrical
panel shows the possible types.
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.
• 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
• Verificare il collegamento elettrico del termostato
• Check thermostat setting and correct it
• Check functioning of thermostat
• Check that gas feed pipe has been bled
• Check gas feed pressure
7
REMEDY
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