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Haier HSU109VHG-G - User Manual

Haier HSU109VHG-G
100 pages
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©2013 (Qingdao Haier Air Conditioner General corp.,Ltd)
All right reserved .Unauthorized copying and distribution is a violation of law
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the product or products dealt with in this service information by anyone else could result in serious injury or death
EK-Series
HSU109VHG-G
HSU218VHG-W

Table of Contents

Questions and Answers

  • A
    Angela WilliamsJul 31, 2025
    Why is my Haier Air Conditioner cooling poorly?
    • C
      Christine PerryJul 31, 2025
      If your Haier Air Conditioner isn't cooling effectively, several factors could be the cause. First, check if the air filter is dirty and clean it, ideally every 15 days. Make sure there are no obstructions blocking the air inlet or outlet; remove any you find. Verify that the temperature is set correctly and adjust it as needed. Ensure all doors and windows are closed. If direct sunlight is entering the room, use curtains to block it. Finally, reduce heat sources or the number of people in the room.
  • J
    johnsonjenniferAug 4, 2025
    How to restart Haier HSU109VHG-G Air Conditioner immediately?
    • A
      Aaron PearsonAug 4, 2025
      When a Haier Air Conditioner is stopped, it will not restart immediately for about 3 minutes. This is a protection feature. If you unplug and re-plug the unit, this protection circuit activates for 3 minutes.
  • R
    Rachel WalterAug 9, 2025
    Why is my Haier HSU109VHG-G making noise?
    • F
      flowerskrystalAug 9, 2025
      You might hear swishing or gurgling noises during operation or when the Haier Air Conditioner stops; this is normal and caused by refrigerant flowing through the system. This noise is more noticeable in the first few minutes after starting the unit. A cracking noise during operation is also normal, caused by the casing expanding or shrinking due to temperature changes. However, if there's a significant noise from airflow, the air filter may be too dirty and should be cleaned.
  • M
    madison98Aug 14, 2025
    Why does my Haier HSU109VHG-G smell?
    • J
      Jessica DukeAug 14, 2025
      The Haier Air Conditioner might circulate odors from the room, such as smells from furniture, paint, or cigarettes.
  • D
    David WellsAug 25, 2025
    Why can't I change the fan speed in dry mode on my Haier HSU109VHG-G Air Conditioner?
    • P
      phillip13Aug 25, 2025
      In DRY mode, when the room temperature is lower than the temperature setting plus 2 degrees Celsius, the Haier Air Conditioner will run intermittently at LOW speed, regardless of the fan setting.
  • E
    Eric ScottSep 10, 2025
    What to do if Haier HSU109VHG-G blows mist?
    • K
      kristennicholsonSep 12, 2025
      During COOL or DRY operation, the Haier Air Conditioner may blow out mist due to the rapid cooling of the indoor air.

Summary

Product Functions

List of Functions

Technical Specifications

Specifications Overview

Wiring Diagrams

Indoor Unit Connectors

Lists connectors and their functions for the indoor unit's control PCB.

Indoor Unit Wiring Diagram

Outdoor Unit PCBs

Lists connectors and functions for outdoor unit control and module PCBs.

Indoor Unit Circuit Diagrams

Outdoor Unit Wiring Diagram

Outdoor Unit Control Board Circuits

Operation and Control

Main Functions Overview

Outdoor Unit Control

Explains compressor frequency, fan control, and expansion valve control.

Service Diagnosis and Troubleshooting

Diagnosis Cautions & Symptoms

Cautions for diagnosis and common problems with their check items and measures.

Error Codes and Descriptions

Lists error codes, indications, fault descriptions, and reference pages.

Thermistor and EEPROM Errors

Details thermistor and EEPROM abnormalities, detection, causes, and troubleshooting.

Motor and IPM Faults

Explains AC fan motor, DC fan motor, IPM protection, and compressor over-current faults.

Communication and Voltage Faults

Covers communication faults, power supply voltage, and discharge temperature protection.

System Protection and Malfunctions

Details antifreezing, frequency limitation, temperature protection, and malfunction handling.

Specific Malfunction Detection

Explains loss of synchronism and high work-intense protection detection.

Installation Manual

Preparation & Site Selection

Indoor Unit Installation

Outdoor Unit Installation & Piping

Cable Connection & Drainage

Haier HSU109VHG-G Specifications

General IconGeneral
Cooling Capacity9000 BTU/h
Energy Efficiency Ratio (EER)3.21
Power Supply220-240V, 50Hz
InverterYes
Operating Temperature (Heating)-7°C to 24°C
TypeSplit AC
RefrigerantR32
Outdoor Unit Noise Level52 dB

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