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Domestic Air Conditioner

4.2᧶ Outdoor unit

Connectors

PCB(1) (Control PCB)

1) CN1 CN2 Connector for power N and L

2) CN3 Connector for ground

3) CN22 Connector for DC POWER 15Vand 5V to the module board

4) CN16 Connector for electric expansion valves

5) CN21 Connector for DC fan motor

6) CN10 Connector for four way valve coil

7) CN17 CN18 CN19 CN20 Connector for thermistors

(CN20: outdoor air CN19: heat exchanger CN18 :SUCK thermistors CN17 :discharge pipe)

8) CN23 Connector for communicate between the control board and the module board

9) CN25 CN8 Connector for the L N to the module board

10) CN4 Connector for communicate between the indoor board and the outdoor board

11) CN26 Connector for capacitance anode

12) CN24 Connector for capacitance cathode

PCB(2) (module PCB)

CN10 Connector for the DC power 5V and 15V form the control PCB

CN11 Connector for communicate between the control board and the module board

P( CN1) N(CN5) Connector for capacitance board

LI (CN7) LO(CN6) Connector for reactor

CN2 CN3 CN4 Connector for the U V W wire of the

compressor

Note: Other Designations

PCB(1) (Control PCB)

1) FUSE 1 (25A,250VAC) FUSE 2(1A,250VAC)

2)LED 1 keep light representative normal ,if keep flash interval representative trouble Alarm

3)RV1 RV2 RV3 Varistor

FOR12K

HSU12/18VHJ(DB)

Haier HSU12 User Manual

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