When The Outdoor Unit Does Not Operate - Samsung ASH-0906ER Service Manual

Troubleshooting
5-2-3 When the Outdoor Unit Does Not Operate. (Initial Diagnosis)
1) Checklist :
(1) Is input voltage normal? (198-264V~)
(2) Is the set temperature of the remote control higher than room temperature in COOL mode?
(3) Is the set temperature of the remote control lower than room temperature in HEAT mode?
(4) Is the POWER-IN connector (CN71) linked correctly?
(5) Is the indoor unit wire properly connected with the outdoor unit wire?
2) Troubleshooting procedure
Remove power cord and plug in again in approx. 5 seconds
Is operating lamp blinking in 3 minutes and then lamp off?
Does operation start after 3 minutes when run/stop
button of the remote control unit pushed?
Voltage at pin #46 of micom IC01? (High level)
Voltage at pin #15 of IC03 (KA2657)? (Low level)
Ia AC 198~264V applied between the Terminal Tap(CN71)
and RY72 Terminal NO ④?
Compressor or compressor capacitor is faulty.
5-4
N
Y
N
N
Y
N
Y
N
60Hz
Y
Check as in the procedure "No Power
parts". Refer to page 5-2.
Y
Normal
Micom (IC01) is faulty.
Driver IC03 (KA2657) is faulty.
Relay (RY72) is faulty.
Samsung Electronics