Shini STM-PW series, Руководство пользователя

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8. Trouble Shooting
1
2
3
4
5
Failures
Main power indicator
does not become bright
after main switch is
turned on.
Both power and phase
reverse indicator are
bright after the main
switch is turned on.
The buzzer sounds to
raise alarm.
Motor overload relaly is
bright. The buzzer
sounds and system
stops working.
Overheat indicator is
bright. The buzzer
sounds and system stops
working.
Low level indicator is
bright. The buzzer
sounds and system stops
working.
Possible reasons Solutions
Did not connect through power
supply.
Main switch broken.
Power supply wires problems.
Control circuit fuse melt.
Transformer broken.
Connect through power supply.
Replace main switch.
Check electrical wires.
Fix the fuse.
Replace the transformer.
Power supply low voltage.
Phase shortage.
Phase reversal.
Check power supply.
Check power supply.
Exchange two of the wires of
power supply.
Abnormal fluctuations of power
supply.
Pump blocked.
Pump motor problems.
Overload relay (F1) setting value
error.
Check power supply.
Check the pump.
Check pump motor.
Set the setting current of overload
relay to equal to 1.1 times of motor
rated current. Please refer to page
10-15 for detailed description of
overload relaly.
Reset overload relay:
wait for one minute, then press the
blue button to reset.
EGO temperature setting mistakes.
EGO poor temperature detecting.
Heater contactor K1 and K2
problems.
Correctly set EGO temperature.
(EGO temperature setting value=
temperature setting value+10
)
Replace EGO.
Replace the contactor.
Low pressure of water supply.
Pressure switch problems.
Increase the pressure of water
supply.
Replace pressure switch.
8-1
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PCB problems. Replace the PCB.
8. Trouble Shooting