Fuel Pump Is Idling With - Val6 KBE5L Maintenance Manual

Operation Flowchart

Fuel pump is idling with

NO YES
Fuel is sprayed normally from
YES
(Fuel is sprayed normally from the nozzle)
Combustion stops during the operation
NO YES
Misfire in about 25 seconds
YES
NO
Overvoltage lamp is not lit
YES
Overvoltage lamp is lit
MODEL:
NO
(fuel drips down from the
disk or does not come out
at all)
NO
KBE5S, KBE5L(2-step)
Possible Cause
●
Fuel pump is inhaling remaining air in fuel line
(especially brand-new heater or after refueling)
● Pump is inhaling air from the fittings of fuel line
between tank and fuel pump
●
Fuel line is clogged
●
Fuel filter (element) is clogged
● Nozzle is clogged
● Fuel pump is clogged or defective
● Fuel filter and/or nozzle is clogged by thick fuel
●
Nozzle is clogged
●
Fuel is contaminated with water
Lens of flame monitor is dirty or dusty
●
Poor lighting is detected by flame monitor
●
●
Flame monitor connector is loose connection
●
Flame monitor is defective
Run out of fuel
●
● Nozzle is clogged
● Fuel filter is clogged
● Air intake of fuel gauge is clogged
Overvoltage is being detected
●
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