Brand: Haier
Category: Aires Acondicionados
Document Type: Manual
Language: EN
Manual for HSU12/18VHJ(DB)
Uploaded: Nov. 21, 2025, 6:18 p.m.
Warranty Information
None
This manual provides service information for Haier HSU12/18VHJ(DB) DC Inverter E-Series wall-mounted air conditioners. It covers safety precautions, system configuration, service diagnosis, removal procedures, specifications, wiring diagrams, and circuit diagrams. The manual is intended for experienced repair technicians only.
Troubleshooting and error codes
| Description | LED1 Flash Times |
|---|---|
| Outdoor EEPROM error | 1 |
| The protection of IPM | 2 |
| Overcurrent protection of AC electricity | 3 |
| Communication fault between the IPM and CBD | 4 |
| Over pressure or Overheat protection for the compressor | 5 |
| Power voltage is too high or low | 6 |
| Overheat protection for exhaust temperature | 8 |
| Frost-removing temperature sensor failure | 10 |
| Ambient temperature sensor failure | 12 |
| Exhaust temperature sensor failure | 13 |
| Deviate from the normal for the compressor | 18 |
| Loop of the station detect error | 19 |
| Overcurrent of the compressor | 24 |
| Overcurrent protection for single-phase of the compressor | 25 |