Samsung DH32ZAX - Page 98

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■ EC18 : When the trouble is found on the part related to power system of output unit.
Check power code and replace PCB
NO
YES
YES
YES
YES
YES
Replace fuse
NO
NO
NO
NO
No trouble on F101, F701?
Is the voltage between CN71 pin no. 3 and TB1
AC220V~AC24V?
Check to confirm whether the wire is connected
correctly between indoor unit and outdoor unit?
Check point :
- Outdoor unit AC220V~AC240V input power, DC12V output, DC5V output
- Power transformer, F101, F701
DC12V output?
Check and replace IC02
No check on power
transformer AC?
Check and replace IC01
Check and replace power
transformer
DC5V output?
No trouble on the outdoor unit power system and
finish the test
Samsung Electronics
Trouble Shooting
Duct-ADH1800E-3 4/12/00 5:47 PM Page 6-19