Specifications

84 | SAMSUNG

Troubleshooting for Non Inverter (cont.)

■ When the UP/DOWN Louver Motor Does Not Operate. (Initial Diagnosis)

1. Checklist :

1) Is input voltage normal?

2) Is the UP/DOWN louver motor properly connected with the connector (CN61)?

2. Troubleshooting procedure

■ In the HEAT mode, When there is no warm air current. Check this fist;

(1) Is the set temperature of Remote Control lower than room temperature in Heat mode?

(2) Is the Indoor PCB properly connected with the CN71 connector?

Remove power cord and plug in again in approx. 5 seconds.

Is STD lamp blinking?

Does operation start when swing button of the

remote control unit pushed?

Voltage at pin #57~#60 of micom (IC04) change?(Squarewave)

Voltage at pin #2 ~ #5 of CN61(motor connector)

change?(Squarewave)

UP/DOWN louver motor is faulty.

Driver IC06/08 (ULN2003A) is faulty.

Micom (IC04) is faulty.

Normal

Check as in the procedure

"No Power".

After training on, the heating operation

should start in 5 minutes.

Is the number #38 of Micom (IC04) DC 5.0V?

Is the number checking #11 of IC05 (ULN2003A) LOW?

Is the voltage between CN71 #1 and CN71 #5 rating voltage ±10% range

Abnormal 4-Way valve of Outdoor Unit.

or connecting Cable

4-Way valve should be replaced

or connecting Cable Check.

Yes

Normal

Abnormal Micom

Abnormal IC05

Abnormal RY73

PCB should be replaced.

Yes

TROUBLESHOOTING

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