Shizuoka Seiki VAL6 KBE5S, Service Manual

VAL6 KBE5S  Trouble Shooting

Possible Cause

How to check

Result

Remedy

Reference

Phenomenon

2

．

The heater

does not ignite.

Fuel pump
does not
operate at all.

Loose connection
of fuel pump
connector

Plug in fuel pump
connector (CN 6) again,
and turn on

If it works normally,
fuel pump connector
fails in contact

Plug in connector
(CN 6) firmly

Loose connection
of joint connectors
for fuel pump

Plug in joint connectors
for fuel pump again, and
then turn on

If it works normally,
connectors on fuel pump
fails in contact

Plug in Joint
connectors firmly

Failure of fuel
pump

Measure voltage at
output side of fuel pump
connector on burner
control

If voltage is normal, fuel
pump fails

Replace fuel pump

Failure of burner
control

Standard: AC60

～

96V

(red-blue)

If tester reads 0V, burner
control fails

Replace burner
control

No fuel or a
little fuel  is
pumped up.

Fuel line is
clogged

Disconnect each fuel
line, and then clean up
each of them

If it ignites after
cleaning, fuel flow
decreases because of
clogged in fuel lines

・

Clean fuel lines

・

Clean and rinse

the tank with
kerosene, alcohol
or acetone

Filter is clogged

Check condition of filter If filter is dirty, amount

of fuel flow decreases
because of clogged filter

・

Replace filter

・

Clean and rinse

the tank with
kerosene, alcohol
or acetone

Nozzle is clogged Replace nozzle

If it ignites, nozzle is
clogged

・

Replace nozzle

・

Clean and rinse

the tank with
kerosene, alcohol
or acetone

3