Schematic Diagram
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
5.3 Printed Circuit Board
(1)Models:GWHD(14)NK3BO,GWHD(18)NK3DO
Ɣ7239,(:
Ɣ%277209,(:
1
Compressor
interface
2
Unit A liquid valve
and gas valve
3
Unit B liquid valve
and gas valve
4
Compressor
overload protector
5 Temperature sensor
6
Compressor electric
heater
7 Outdoor fan
8 4-way valve
9
Chassis electric
heater (reserved)
10
Unit A electronic
expansion valve
11
Unit B electronic
expansion valve
12
Communication
interface with indoor
unit
13
Communication
neutral wire
14
Live wire of power
supply
15
Neutral ire of power
supply
16 Reactor interface1
17 Reactor interface2