Shizuoka Seiki VAL6 EPX Series, Руководство по обслуживанию

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PAGE 13
VAL6 EPX Trouble Shooting
No. Possible Cause How to check Result Remedy
24 Replace a burner control
27 Replace a burner control
29 Replace a burner control
Increase the preset
temperature of thermostat.
*To keep heater running,
an internal thermostat
knob shall be set on
"Cont." position. If it works normally, the
heater is under control of
thermostat. Increase the preset
temperature of thermostat Internal thermostat is
working
(the preset
temperature of internal
thermostat is below the
ambient temperature)
Wait till the heater cool
down for several minutes /
Replace a overheat
protection
Overheat lamp is lit (Overheat protection is working)
Plug in overheat protection
connector (CN 2) again,
and then turn on Overheat protection
connector (CN 2) is
loose connection If it works normally,
overheat protection
connector fails on contact Plug in connector (CN 2)
firmly
Not applicable in above
Tip-over switch cord is
disconnection / Tip-
over switch is defective Check the conduction of
tip-over switch
(Cord color&Standard
value)
red-red:
Conduction 0Ω
If it doesn't conduct (∞Ω)
when the heater is on the
level,
Tip-over switch cord is
disconnection / Tip-over
switch is defective
Overheat protection is
working / Overheat
protection cord is
disconnection /
Overheat protection is
defective Check the conduction of
overheat protection
(Cord color&Standard
value)
white-white: Conduction 0
Ω
If it doesn't conduct (∞Ω),
Overheat protection is
working / Overheat
protection cord is
disconnection / Overheat
protection is defective
21
Not applicable in above
Overvoltage lamp is lit (Overvoltage detection is working)
If excessive voltage is
detected (over 300V for
EPX1 / over 150V for
EPX5) in AC outlet,
overvoltage detection is
working Plug into a working outlet Excessive voltage is
detected Measure voltage of AC
outlet.
Standard: EPX1 AC230V
EPX5 AC120V 28
Replace a tip-over switch
Not applicable in above
31
26
23
22
Tip-over lamp is lit (Tip-over switch is working)
Tip-over switch
connector (CN 2) is
loose connection Plug in tip-over switch
connector (CN 2) again,
and then turn on If it works normally, tip-
over switch connector fails
on contact Plug in connector (CN 2)
firmly 25
Measure resistance at
condenser of fan motor
Standard: detect
resistance for a moment
and return to ∞Ω
Replace a fan motor
If it shows ∞Ω immutably,
condenser is defective
Condenser of fan
motor is defective
Overheat, tip-over and overvoltage lamp is lit (Abnormal fan speed detection is working)
Terminal connector for
condenser of fan motor
is loose connection Plug in terminal connector
for condenser of fan motor
again, and then turn on If it works normally,
terminal connector for
condenser of fan motor Plug in terminal connector
firmly 30
33
32 Plug in connector (CN 8)
firmly
Fan motor connector
(CN15) is loose
connection Plug in fan motor
connector (CN15) again,
and then turn on If it works normally, fan
motor connector (CN15)
fails on contact Plug in connector (CN 15)
firmly
Fan speed sensor
connector (CN 8) is
loose connection Plug in fan speed sensor
connector (CN 8) again,
and then turn on If it works normally, fan
speed sensor connector
(CN 8) fails on contact