Haier D Series User Manual

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Domestic air conditioner
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SERVICE MANAUL
Wall Mounted Type
D-Series
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
2016 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version˖V1 Date˖2016-11-02
1U09JEDFRA
1U12JECFRA
1U25S2PJ1FA
1U35S2PJ1FA
Model No.

Haier D Series Specifications

General

Operating Voltage	220-240V, 50Hz
Type	Split
Functions	Cooling
Energy Efficiency Ratio (EER)	3.5
Features	Self-Cleaning, Sleep Mode, Timer

Summary

Introduction

Safety Cautions

General safety warnings and precautions for handling electrical appliances.

Caution in Repair

Specific warnings and precautions to be taken during repair work.

Cautions Regarding Products After Repair

Piping diagrams

Printed Circuit Board Connector Wiring Diagram

Outdoor Functions and Control

Main functions and control specification

Service Diagnosis

Caution for Diagnosis

Important warnings and precautions before starting the diagnostic process.

Parameter of primary electronic appliance

Problem Symptoms and Measures

Lists common operational problems, check items, and recommended solutions.

Error Codes and Description indoor display

Explains error codes indicated by the unit and their corresponding fault descriptions.

Thermistor or Related Abnormality

Details troubleshooting steps for thermistor malfunctions and related errors.

EEPROM abnormal

Outdoor DC fan motor fault

IPM protection

Explains IPM protection faults and their resolution steps.

Over-current of the compressor

Addresses issues related to compressor over-current and troubleshooting.

The communication fault between IPM and outdoor PCB

Power Supply Over or under voltage fault

Guides on diagnosing and resolving power supply over or under voltage issues.

Overheat Protection For Discharge Temperature

Explains overheat protection for discharge temperature and its causes.

The communication fault between indoor and outdoor

Details troubleshooting for communication faults between indoor and outdoor units.

Loss of synchronism detection

Addresses abnormal inverter side current detection and synchronism loss.

High work-intense protection

Explains high work-intense protection activated in heating mode due to heat exchanger temperature.

Circuit diagrams

Outdoor unit control board Circuit Diagrams

Module board Circuit Diagram

Removal Procedure

Removal of Heat Exchanger