BIEMMEDUE BH 50 Betriebsanleitung Seite 31

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
• The heater does not work:
lamp is on
(burner is in safety stop)
• The burner starts and the flame lights,
generating smoke
• The burner does not stop
• Fan is noisy or vibrates
• Insufficient heating
L-L 196.04-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
• Burner motor winding is damaged
• Burner motor bearing blocked
• Burner motor condenser burned out
• Defective ignition
• Defective flame control box
• Defective photocell
• Insufficient or no fuel at burner
• Defective solenoid
• Insufficient combustion air
• Excess combustion air
• Diesel is contaminated or contains water
• Air leaks in fuel circuit
• Insufficient fuel at burner
• Excess fuel at burner
• Defective solenoid seal
• Dirt on fan blades
• Poor air circulation
• Insufficient burner capacity
REMEDY
• 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
• Replace motor
• Replace bearings
• Replace condenser
• Check connections of ignition wires to electrodes and
transformer
• Check position and distance of electrodes
• Check that electrodes are clean
• Replace ignition transformer
• Replace box
• Clean or replace photocell
• 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 electrical connection
• Clean solenoid and replace if necessary
• Remove all possible obstacles or obstructions from air
inlet and/or outlet
• Check position of air adjustment ring
• Clean burner disc
• Check position of air adjustment ring
• Replace old fuel with clean fuel
• Clean diesel filter
• Check seal of pipes and diesel filter
• Check pump pressure level
• Clean or replace nozzle
• Check pump pressure level
• Replace nozzle
• Replace solenoid body
• Remove dirt
• Eliminate all obstacles to air flow
• Contact Customer Service
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