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9. Troubleshooting Procedure
1) Troubleshooting fl owchart
The unit does not operate
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.
Dehumidifier doesn't operate at all
Step 2
(Check the FAN-CON/FAN-EVA.)
Start
Check AC power supply
Normal
Has the fuse blown out?
Not blown
ON
Uncorrected
Replace control board
Step 1
Check operation
Does the fan operate?
YES
A
to
Abnormal
Blown
OFF
*Check with operating mode "HIGH".
NO
Check connectors
NO
Are the resistor values of
the fan motor no good?
(See page 21)
NO
Replace board
Restore AC power supply
Replace fuse
Mechanical check
• Correct defects.
• Replace the switch if
defective.
NG
Replace motor
19
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Table of Contents
Troubleshooting
