Service manual

19
9. Troubleshooting Procedure
1) Troubleshooting fl owchart
Restore AC power supply
Replace fuse
Mechanical check
• Correct defects.
• Replace the switch if
defective.
Replace control board
Normal
Abnormal
ON
OFF
Not blown
Blown
Uncorrected
The unit does not operate
Start
Check AC power supply
Has the fuse blown out?
Is the float switch turned on?
Control board connector check
With the power plug removed from the
receptacle, remove and insert each connector
two to three times to improve its contact. Then,
insert the power plug into the receptacle to
make an operation check. Make sure that the
flat cable and the connectors are inserted
straight.
Check operation
Step 1
Step 2
Dehumidifier doesn’t operate at all
Does the fan operate?
(Check the FAN-CON/FAN-EVA.)
*Check with operating mode “HIGH”.
Check connectors
NO
NO
NO
YES
Are the resistor values of
the fan motor no good?
(See page 21)
Replace board
Replace motor
A
to
NG
e01_mj_e15bx_S1-IT.indd 19 2010/06/10 17:30:14