DC INVERTER AC – HAIER HSU 18HEA – WIRING DIAGRAM – CIRCUIT DIAGRAM – MALFUNCTION CODES

Haier HSU-18HEA03/R2(DB)-I Wall mounted Type DC Inverter E-Series _ Malfunction codes_ Connectors _ Indoor & Outdoor unit wiring diagram – Circuit diagram

In 3 minutes when the compressor stops, the units’ malfunctions are not displayed 

The complete appliance’s malfunctions are prior to the units’ malfunctions.

Malfunction codes of the whole unit Remarks: under the mode of refrigeration, the malfunctions of each unit’s thin pipe temperature sensor are not reported, under the mode of heating, the malfunctions of each unit’s thick pipe temperature sensor are not reported.

MALFUNCTIONS

Connectors - PCB(1) (Control PCB)

CN1,CN2 Connector for power N and L
2 CN3 Connector for ground
3 CN6,CN7 Connector for terminal block
4 CN9,CN10 Connector for CN2,CN1 on the module board
5 CN11 Connector for four way valve coil
6 CN12 Connector for fan motor
7 CN15 Connector for electric expansion valves
8 CN17,CN18,CN19, CN21 Connector for thermistors
9 CN23 Connector for DC POWER 15Vand 5V to the module board
10 CN24 Connector for communicate between the control board and the module board
11 CN28,CN25 Connector to P and N of the module board
12 CN36 Connector for communicate between indoor and outdoor unit.

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
Connector wiring diagram

Indoor unit wiring diagram

Outdoor unit wiring diagram

CIRCUIT DIAGRAMS

Outdoor unit control board circuit diagram

Outdoor unit module board circuit diagram

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