HVAC / Air Conditioners
Installation Manual for Haier Split System Air Conditioner
Comprehensive installation guide for Haier split system air conditioners. Includes safety precautions, site selection, refrigerant piping, electrical wiring, test operation, and troubleshooting error codes.
Quick answers from the manual
Quick answer
- This manual provides installation instructions for Haier split system air conditioners (1U series). It covers safety, site selection, piping, wiring, and troubleshooting. p. 1
Key actions
- Perform vacuum drying p. 17
- Check for leaks p. 17
First start
- Perform pre-run checks including wiring and piping insulation. p. 21
Problems and fixes
Eeprom fault
Outdoor main board eeprom fault
p. 24
IPM fault
IPM fault
p. 24Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Refrigerant | R32 | Type of refrigerant | p. 3 |
Where to find it in the PDF
- Safety considerations p. 6, 7
- Installation p. 8, 9, 10, 11
- Refrigerant piping p. 15, 16
- Electrical wiring p. 19, 20
- Failure diagnosis p. 24, 25, 26
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This manual provides essential installation and safety procedures for Haier split system air conditioners. Important: This product must only be installed or serviced by qualified personnel. The system uses R32 refrigerant, which requires strict handling precautions. Always ensure the unit is properly grounded and that all electrical work complies with local regulations.
Safety considerations
The unit is filled with R32 refrigerant. Follow these safety rules:
- Do not install in areas with flammable gas leakage risks.
- Ensure the room area meets the minimum requirements specified in the manual.
- Use only specified accessories and parts.
- Always wear personal protective equipment (gloves, safety glasses) during installation.
- Disconnect power supply at least 2 minutes before servicing electrical parts.
- Do not touch refrigerant piping or internal parts immediately after operation to avoid burns or frostbite.
Installation
Site selection: Choose a well-ventilated location that can withstand the unit's weight and vibration. Avoid areas with strong winds, direct sea breeze, or high dust levels. Ensure sufficient space for maintenance and airflow.
Foundation work: Fix the unit securely to the foundation using M12 bolts. Ensure the unit is level. If drain holes are covered, raise the unit by at least 130mm.
Piping: Use phosphorus deoxidized copper pipes. Ensure piping diameter and length comply with the specifications. Perform a leak test using a bubble solution and vacuum drying to remove moisture before charging refrigerant.
Electrical wiring
All wiring must be performed by an authorized electrician. Use only copper wires. Ensure the earth leakage circuit breaker is compatible with the inverter. Follow the provided wiring diagrams for terminal block connections. Secure cables with ties and ensure they do not touch high-pressure pipes.
Test operation
Perform a test run in cooling mode. Check that stop valves are fully open. Monitor the unit for any unusual noises or vibrations. Do not leave the unit unattended during the test run.
Troubleshooting
The outdoor control board's LED3 indicates error codes. Refer to the failure diagnosis table in the manual to identify malfunctions such as Eeprom faults, IPM faults, or sensor issues. Some errors are resumable, while others require professional intervention.
Manufacturer information
Haier
Practical help
Common problems
Unit not starting or operating incorrectly
Check power supply, ensure wiring is correct, and verify that stop valves are fully open.
Refrigerant leak detected
Perform a leak test using a bubble solution on all piping connections. Ensure flare nuts are tightened to the specified torque.
Error code displayed
Identify the code via LED flash times and consult the failure diagnosis table in the manual.
Before use
- Ensure installation is performed by qualified personnel.
- Verify R32 refrigerant handling precautions.
- Check that all wiring is secure and grounded.
- Confirm stop valves are fully open before operation.
- Ensure proper insulation on all piping.
- Perform a vacuum leak test.
Specs in practice
- Minimum Room Area
- Required floor space for safe installation based on refrigerant charge.
Images and diagrams
- Wiring diagrams for terminal blocks.
- Piping connection methods.
- Foundation bolt installation.
- DRED module installation steps.
Model compatibility
- Indoor units must be designed exclusively for R32.
- Use only specified accessories and parts.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.