Val6 KBE5L Maintenance Manual page 9

VAL6 KBE5S & KBE5L Trouble Shooting
No. Possible Cause
At the time of turning on operation switch
Fan motor is short-
5
circuited
6 Ignition transformer is
short-circuited
About 5 seconds after turning on operation switch
7 Fuel pump is short-
circuited
How to check
Disconnect fan connector
(CN 3) from circuit
board, then measure
resistance between
terminals
・Without circuit tester
Unplug fan connector
(CN 3), and then start
operation
Disconnect ignition
connector(CN 4) from
circuit board, then
measure resistance
between terminals
・Without circuit tester
Disconnect ignition
connector (CN 4), and
then start operation
Disconnect fuel pump
connector (CN 6) from
circuit board, then
measure resistance
between terminals
・Without circuit tester
Disconnect fuel pump
connector (CN 6), then
turn on
Result
If value leads ∞Ω, the
fan coil is short-circuited
If the fuse is intact, the
fan coil is short-circuited
If the value shows ∞Ω,
the ignition coils is short-
circuited
If the fuse is intact, the
ignition coils is short-
circuited
If the value shows ∞Ω,
the fuel pump coil is
short-circuited
If fuse is intact, the fuel
pump coil is short-
circuited
2
Remedy
Replace a fan motor
Replace a fan motor
Replace an ignition
transformer
Replace an ignition
transformer
Replace a fuel pump
Replace a fuel pump
2