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8. TROUBLESHOOTING

LOCKED MOTOR
ERROR

EEPROM ERROR

• The connector (3-pin, male, white) in the MOTOR

HARNESS is not connected to the connector (3-pin,
female, white) of STATOR ASSEMBLY.

• The electric contact between the connectors (3-pin,

male, white) in the MOTOR HARNESS and 4-pin,
female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.

• The MOTOR HARNESS between the STATOR

ASSEMBLY and MAIN PWB ASSEMBLY is cut
(open circuited).

• The hall sensor is out of order/defective.

• EEPROM is out of order.

Displayed only when the START/PAUSE button is
first pressed in the Load Test Mode.

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machine is working, the power is supplied rapidly. 

20

Is the supplied voltage 220V AC?

Is the voltage between the 2 FILTER ASSEMBLY

connectors 220V AC?

Is the LED (1) on?

Are the connectors (2) on the PWB loose?

Is wire of the DISPLAY PWB ASSEMBLY  

broken?

Replace  DISPLAY PWB ASSEMBLY 

or repair wire.

Check the fuse or reset

the circuit breaker.

Replace the FILTER

ASSEMBLY (CIRC).

Replace MAIN PWB

ASSEMBLY.

Reconnect.

Replace the MAIN PWB

ASSEMBLY.

NO POWER

8-3. FAULT DIAGNOSIS AND TROUBLESHOOTING

1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First of all, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly.

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