Haier HSU09VHJ User Manual

SERVICE MANUAL
Order No.AC1101S020V0
DC Inverter
EA-Series
Model No. HSU09VHJ(DB)
©(Qingdao Haier Air Conditioner General corp.,Ltd)
All right reserved .Unauthorized copying and distribution is a violation of law
Haier Group
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
WARNING
Wall mounted Type

Haier HSU09VHJ Specifications

General

Brand	Haier
Model	HSU09VHJ
Category	Air Conditioner
Language	English

Summary

1. Introduction

1.1 Safety Cautions

General safety warnings before conducting repair work.

1.1.1 Caution in Repair

Specific warnings to be observed during repair procedures.

1.1.2 Cautions Regarding Products after Repair

Warnings related to the product's condition after repair.

1.1.3 Inspection after Repair

Checks to be performed after the repair work is completed.

2. List of Functions

3. Specifications

4. Printed Circuit Board Connector Wiring Diagram

4.1 Indoor unit Connectors

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

4.2 Outdoor unit

Lists and describes connectors for the outdoor unit's PCBs.

5. Functions and Control

5.1 Main functions and control specification of indoor unit

Details indoor unit functions and control specifications.

5.1.1 Temperature Adjusting function

Explains how to adjust temperature settings for different modes.

5.1.2 Main functions

Covers core operational functions like warm boot and wind volume limits.

5.1.3 Special functions

Covers special modes like Powerful, Silent, and Timed operations.

5.1.3.5 Sleeping function

Explains the automatic temperature adjustment for sleep mode.

5.2 Main functions and control specification of outdoor unit

Details outdoor unit operational frequency and control logic.

5.2.2 Outdoor fan control

Details outdoor fan speed control based on conditions.

5.2.6 System Protection Function

Outlines various protection features like stand-by time and overheat protection.

5.3 Function of Main Thermistor

5.4 Value of Thermistor

5.4.1 Indoor Unit

Provides resistance values for indoor unit thermistors at various temperatures.

Discharging Sensor

Lists resistance values for the discharging sensor.

6. System Configuration

6.1 System Configuration

Details the system configuration and installation overview.

Parts and Functions

Remote controller

Lists and describes the functions of the remote controller buttons.

Loading of the battery

Instructions for loading batteries into the remote controller.

Operation

Base Operation

Basic steps for operating the air conditioner using the remote.

Air Flow Direction Adjustment

How to adjust vertical and horizontal airflow direction.

Sleep Operation

Explains how to use the sleep mode for comfort.

Timer On/Off On-Off Operation

Instructions for setting timer operations (ON/OFF).

Cautions

Trouble shooting

Normal Performance inspection

Checks for common issues like noise, smells, and mist.

7 Service Diagnosis

7.1 Caution for Diagnosis

Important precautions before diagnosing errors.

7.2 Problem Symptoms and Measures

Lists common problems and their corresponding checks/measures.

7.3 Error Codes and Description indoor display

Explains error codes indicated by indoor and outdoor units.

7.3.1 Thermistor or Related Abnormality (indoor unit)

Diagnosis for indoor thermistor errors like room/heat-exchange sensor.

7.3.2 Indoor fan motor malfunction

Troubleshooting steps for indoor fan motor issues.

7.3.3 IPM protection

Diagnosis and resolution for IPM protection faults.

7.3.4 The IPM and outdoor PCB don’t communicate or Related Abnormality

Troubleshooting communication errors between indoor and outdoor units.

7.3.5 Thermistor or Related Abnormality(outdoor unit)

Diagnosis for outdoor thermistor faults.

7.3.6 Overheat Protection For Exhaust Temperature

Addresses issues related to exhaust temperature overheat protection.

7.3.7 The EEPROM Abnormality (Indoor or outdoor unit)

Troubleshooting EEPROM data errors.

7.3.8 Communication error between the indoor and outdoor units

Steps to resolve communication errors between units.

7.3.10 Power Supply Over or under voltagve fault

Diagnosing and fixing power supply voltage issues.

7.3.11 Loop of the station detect error

Troubleshooting compressor rotor detection errors.

7.3.12 Over-current of the compressor

Addresses issues related to compressor over-current.

7.3.13 Fan Motor(DC Motor) or Related Abnormality

Troubleshooting fan motor malfunctions.

Installation

Necessary Tools for Installation

Lists essential tools required for installation.

Selection of Installation Place

Guidance on choosing optimal locations for indoor and outdoor units.

Connection of pipes

Instructions for connecting refrigerant pipes, including bending radius.

9. Removal Procedure

9.1 Removal of Air Filter

Steps for safely removing and re-installing air filters.

9.2 Removal of Front Grille

Procedure for removing the front grille of the unit.

9.3 Removal of Horizontal Blade

Steps for removing the horizontal airflow blade.

9.6 Removal of Electrical Box

Instructions for removing the electrical box from the outdoor unit.

9.7 Removal of Heat Exchanger

Steps for removing the heat exchanger unit.

9.8 Removal of Fan Rotor and Fan Motor

Procedures for removing the fan rotor and motor assembly.

9.2.1 Removal of Outdoor Panel

Steps for removing the outer panels of the outdoor unit.

9.2.2 Removal of Electrical Box

Instructions for removing the electrical box from the outdoor unit.

9.2.3 Removal of Fan and Fan Motor

Procedures for removing the fan and motor from the outdoor unit.

9.2.4 Removal of fan motor Bracket and Partition

Steps for removing the fan motor bracket and internal partition.

9.2.5 Removal of Computor and Heat Exchanger

Procedures for removing the computer board and heat exchanger.

10.Wiring Diagrams

10.1.INDOORUNIT

Wiring diagram for the indoor unit.

10.2.Outdoor unit

Wiring diagram for the outdoor unit.

11.Circuit Diagrams

11.1.INDOORUNIT

Circuit diagram for the indoor unit's main board.

11.2.OUTDOORUNIT

Circuit diagrams for the outdoor unit's module and control boards.

12. Description of coding rules of unit model

Haier Group