Shizuoka Seiki VAL6 EPX Series, Руководство по обслуживанию

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PAGE 10
VAL6 EPX Trouble Shooting
No. Possible Cause How to check Result Remedy
2 Too much fuel in the
tank Check the fuel level Drain excess fuel
3
・Without multimeter
Replace a transformer
4
5
・Without multimeter
Replace a packing Fuel leaks because of
broken bolt packing Remove a drain bolt from
tank after draining fuel, and
check whether its packing
are damaged Drain gasket and/or
packing is defective
Transformer coil is
short-circuited
Cord color: red-white(input) purple-purple(output)
If it shows 0Ω, surge
absorber is short-circuited
1
Fuse blows out
At the time of turning on operation switch
At the time of plugging into the power supply
《How to drain the fuel》
《How to check SA1》
Replace a burner control Measure resistance at
surge absorber (SA1)
If the fuse is intact, the
transformer is short-
circuited Disconnect transformer
connector (CN 10) from
burner control board, then
put plug into AC outlet
Surge absorber(SA1)
on burner control is
short-circuited
Replace a fan motor If the fuse is intact, the fan
coil is short-circuited Unplug fan motor
connector (CN 15), and
then start operation
Fan motor is short-
circuited Disconnect fan motor
connector (CN 15) from
burner control, then
measure resistance
between terminals
EPX5 red-red: about 80Ω
EPX1 brown-brown: about
380Ω
If it shows 0Ω, the fan coil
is short-circuited
Replace a fan motor
Fuel is leaking
(Cord color & Standard value)
Replace a transformer
If either lead shows 0Ω,
the transformer is short-
circuited
Disconnect transformer
connector (CN 10) from
burner control board, then
measure coil resistance
values of two leads
SA1
Standard value:
EPX1
red-white: about 1.6k
Ω
purple-purple: about 10
Ω
EPX5
red-white: about 200
Ω
purple-purple: about 6
Ω