Directed Electronics 9405T Manual de servicio descargar pdf (Pagina 25)

Troubleshooting

5-4

Samsung Electronics

5-3-3 When the Compressor Does not Operate

1) Checkpoints

(1) Is the voltage of the power source normal?(AC 187V - AC 253V)

(2) Is the desired temperature set at a higher level than the current temperature at the time of “Cool”

o p e r a t i o n ?

(3) Is the power-in good contact with the comp. connector(GT 1, 2, 3)?

(4) Check the wirings of the outdoor and indoor unit for a wrong connection or poor contact.

(5) Isn’t the compressor in a 3-minute stand-by state?

2) Checking pro c e d u res(after checking the checkpoints of clause 1)

Turn off the power, and then turn it on in 5 seconds.

Then the compressor and relay are norm a l .

Replace the relay when the

resistance is 0Ω or ∞.

Then check and replace the

MICOM (IC1).

Then check and

replace the IC 3

Is it “low” when

checking the output

wave of the IC 3

No. 16.

Check and measure

the resistance

value after turning

off the power.

Check whether the relay(RY1) is turned on and the com-

pressor is operated in 3 minutes after starting the

“COD” operation by activating the on/off button and

operation made key.

Is the resistance at both ends/of the re l a y ( R Y 1) coil approximately 400Ω?

Is it “high” when checking the output wave of the MICOM

(IC1) pin No. 6?

Is the voltage at both ends/of the relay(RY1) coil DC 12V?

Is the voltage at both ends/of the electronic contactor coil

AC 220V?

Replace the compressor.

Then check and replace the

electronic contactor

Then check the wiring of indoor and Then

check the wiring of indoor and or open.

Is the voltage at both ends/of the electronic contactor terminal AC 220V?

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