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5-2-4 When the UP/DOWN Louver Moter Does Not Operate. (Initial Diagnosis)
1)
Checklist :
(1) Is input voltage normal? (the rating voltage ±10% range)
(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.
Does operation start when swing button of the remote control unit
pushed?
Voltage at pin #33-#36 of micom (ICO4) change?(Squarewave)
Volatge at pin #10, #11, #12, #13 of IC05 (KID65003)
UP/DOWN louver motor is faulty.
5-2-5 In the Heat 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 and CN78 connector?
After training on, the heating operation should
start in five minutes.
Is the munber #48 of Micom (IC04) DC 4.8 V?
Is the munber #12 of IC07 (KID65003) LOW?
Is the voltage between CN71 #1 and CN78 #1 the rating voltage ±10% range?
Abnormal 4way valve of Outdoor Unit.
or connecting Cable
4 way valve should be replaced
or connecting Cable Check.
Samsung Electronics
Is operating lamp blinking?
change?(Squarewave)
NO
YES
YES
YES
Check as in the procedure "No Power parts".
Refer to page 5-2.
Micom (IC04) is faulty.
Driver IC05 (KID65003) is faulty.
YES
Normal
NO
Abnormal Micom
NO
Abnormal IC07
NO
Abnormal RY73
Troubleshooting
Normal
PCB should be replaced.
5-5
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