AUX Air Conditioner Service manual
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8 Air-conditioner starts working after pressing ON/OFF on the remote
10 Normal
11 Check outdoor power connection and compressor
12 Check the AC voltage of PCB board.
13 Signal direction shown on the remote controller.
14 Check the remote error of diagnosis
15 Check the primary voltage of convertor
16 Replace the indoor PCB board
17 Check the transformor is normal or not?
18 LED indicator and digital tube on or not?
19 Check the AC voltage of PCB board
20 Replace the indoor PCB board
21 Replace the outdoor PCB board
22 Check control side voltage of RE1.RE2(fan). RE3. RE4 ( 4-way valve). RE7. RE8. RE9.
RE10(Compressor) on the outdoor controller normal or not?
23 Check the connection of compressor. external fan. and 4-way valve
24 Check #21(0V). #42(5V) of IC1 is normal or not?
25 Replace relay
26 Check the output of 7821 and 7805 normal or not?
27 Replace outdoor PCB board
28 Replace 7815 or 7805
3. indoor fan motor out of work
Note：Each air conditioner is correspondent with an outdoor unit and two indoor unit.and a set of
controller. Please check accordingly.
3.3. check item
1)Does indoor fan motor connected to connector(CN10）correctly？
2)Does input DC current is correct？
3)Does Hall IC of indoor fan motor connected to connector(cn30）correctly？
4)Does function capacitance of indoor fan electromotor connected to connector(cn40）correctly？
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