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Printed Circuit Board Connector Wiring Diagram; Indoor Unit Connectors - Haier HSM18HEKC03/R2 Service Manual

Ek series wall mounted type air conditioner
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HSM18HEKC/HRAC03/R2(DB) HUM18HC03/R2(DB) -SM

4.Printed Circuit Board Connector Wiring Diagram

4.1 Indoor unit Connectors

Connectors
PCB(1) (Control PCB) For HUM18HC03/R2(DB)
1) CN26 Connector for fan motor
2) CN1 Connector for heat exchanger thermistor and Room temperature thermistor
3) CN11 Connector for UP&DOWN STEP motor
4) CON2 Connector for power N wire
5) CON1 Connector for power L
6) CN32 Connector for display board
7) C0N6,C0N8 Connector for ions generator
8) CON7 Connector for communicate between the indoor board and the outdoor
board
9) CON9 Connector for new airflow wire
10) CN34 Connector for long-range control
11) CN20 Connector for room card
Note: Other designations
PCB(1) (INdoor Control PCB)
1) SW1 Connector for Forced operation ON / OFF switch
2) SW2 1 Select remote code A or B,2 Select 25 or 35 ,3 Select room card able or
disable
3) SW4 Select 20 or other,if select 20,SW2 must select 25(Select ON)
4) RV1 Varistor
5) FUSE1 Fuse 3.15A/250VAC
9
Connector Wring Diagram
Domestic Air Conditioner

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