Product specifications

Troubleshooting

5-5

Samsung Electronics

5-2-4 When the UP/DOWN Louver Moter 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 pro c e d u re

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

Is operating lamp blinking?

Does operation start when swing button of the remote con-

trol unit pushed?

Voltage at pin #33-#36 of micom (ICO4)

change?(Squarewave)

Volatge at pin #10, #11, #12, #13 of IC05 (KID65003)

change?(Squarewave)

UP/DOWN louver motor is faulty.

Driver IC05 (KID65003) is faulty.

Micom (IC04) is faulty.

Normal

Check as in the procedure "No Power

parts". Refer to page 5-2.

5-2-5 In the mode, When there is no warm air current. Check this first;

(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?

After training on, the heating operation

should start in five minutes.

Is the munber #60 of Micom (IC04) DC 4.8 V?

Is the munber #15 of IC07 (KID65003) LOW?

Is the voltage between CN71 #3 and RY71 NO3 AC198~264?

Abnormal 4way valve of Outdoor Unit.

or connecting Cable

4 way valve should be replaced

or connecting Cable Check.

YES

Normal

Abnormal Micom

Abnormal IC07

Abnormal RY73

PCB should be replaced.