232
TROUBLESHOOTING
58) Check Drain Water
59) Inspect Drain Pump
1. Check operation
Inspect the pump operation by observing the operating sound and visual inspection of the drain flow through
the pipe.
2. Check output voltage
If the drain pump does not operate, check if these is output voltage at the output terminal on the indoor control
PCB.
3. Inspect drain pump motor
Measure the coil resistance between the lead wire terminals and check that there is no disconnection or short
circuit.
60) Inspect Drain Float Switch
61) Inspect Compressor Clutch
1. Put water into the drain pan gradually taking care
so that electric parts do not get wet.
2. Start the cooling operation and operate the drain
pump.
3. Check the operating sound of the drain pump mo-
tor, and confirm water comes out of the drain port.
※ Depending on indoor unit model, you can check
the drain condition through the transparent con-
nector near the indoor unit.
[EX. AXCP type]
Refrigerant pipes
Water inlet
Drain pipe
Pump
Water inlet lid
Bucket
Open
Close
Check the electric continuity of the drain float switch.
NOTE) "A3 (95)" is displayed when there is a disconnection in float
switch connection and also if the float switch is not connected.
Normal There is continuity
Failure There is no continuity
1. Check output voltage
1) Select "Actuators output condition/individual
actuating (code No. 20)" in the check mode of
the board maintenance functions. Then turn ON
"Compressor clutch 2".
2) Check output voltage (12 V DC).
2. Inspect compressor clutch
Measure the resistance between the electromag-
netic clutch connector and the ground, and check
that there is no coil disconnection or other faults.
NOTE) Disconnect the connector before measuring
the resistance.
Connector
Circuit tester
To Next Page
Loading...
Need help?
General