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Haier 1U24GR4EAA Service Manual

Wall mounted type on/off
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SERVICE MANUAL

Wall Mounted Type

ON/OFF
Model No.
1U24GR4EAA
WARNING
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
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 2016-11-09

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  Summary of Contents for Haier 1U24GR4EAA

  • Page 1: Service Manual

    Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2016 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...
  • Page 2: Table Of Contents

    Contents Contents 1. Introduction ....................1 2. Specifications..................7 3. Piping diagrams ..................9 4. Operation range ..................10 5. Circuit diagrams .................. 6. Dimensional drawings................7. Center of gravity ................... 8. Service Diagnosis ................9. Perfomance Curves Diagram..............18 Domestic air conditioner...
  • Page 3: Introduction

    Introduction 1 Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph Heat pump & R410A refrigerant Version number District Platform of outdoor units:G Platform Nominal cooling capacity (24000BTU/h) Type of outdoor unit : U (normal type) The maximum combination number Domestic air conditioner...
  • Page 4: Safety Cautions

    Introduction 1.2 Safety Cautions Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.
  • Page 5: Cautions Regarding Products After Repair

    Introduction Warning Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
  • Page 6 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
  • Page 7: Inspection After Repair

    Introduction Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks. Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire.
  • Page 8: Using Icons

    Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.
  • Page 9: Specifications

    Specification 2 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE Phase Frequency Voltage NOMINAL CAPACITY and NOMINAL INPUT cooling heating Capacity rated Btu/h 23210 24580 Power Consumption(Rated) 2.11 1.99 EER/COP 3.22 3.62 Moisture Removal m³/h 2.8*10 ³ TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D 860×308×730 Packaged H*W*D 995×420×815 Dimensions...
  • Page 10 Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type R410A Refrigerant charge Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference Refrigerant control Capillary liquid 6.35 Piping connections 15.88 (external diameter) drain Heat insulation type Both liquid and Gas pipes Max.
  • Page 11: Piping Diagrams

    Piping diagrams 3 Piping diagrams Domestic air conditioner...
  • Page 12: Operation Range

    Operation range 4 Operation range Domestic air conditioner...
  • Page 13: Circuit Diagrams

    Circuit Diagrams 5 Circuit Diagrams 您正在使用 ZWCAD 2008i 试用版 详情请查阅WWW.ZWCAD.COM NOTE: 1.The parts ① are optional. Domestic air conditioner...
  • Page 14: Dimensional Drawings

    Dimensinal drawings 6.Dimensional drawings 15.88 unit:mm 7.Center of gravity unit:mm Domestic air conditioner...
  • Page 15: Service Diagnosis

    Service diagnosis 8 Service Diagnosis 8 .1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation.
  • Page 16: Problem Symptoms And Measures

    Service diagnosis 8.3 Problem Symptoms and Measures Symptom Check Item Details of Measure Check the power supply. Check to make sure that the rated voltage is supplied. None of the units operates Check the indoor PCB Check to make sure that the indoor PCB is broken Operation A power failure of 2 to 10 cycles can stop air conditioner Check the power supply.
  • Page 17: Codes And Description

    Service diagnosis 8.4Codes and Description 8.4.1Problem Symptoms and Measures Symptom Check Item Details of Measure Check to make sure that the rated voltage is Check the power supply. None of the units supplied. operates Check the indoor PCB Check to make sure that the indoor PCB is broken Equipment operates but does Diagnosis...
  • Page 18: Eeprom Abnormal

    Service diagnosis Check the connector connection. Correct the connection Is it normal? Thermistor resistance check Replace the thermistor Is it normal? Replace the indoor unit PCB Thermistor resistance check method: Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester. The relationship between normal temperature and resistance is shown in the value of indoor thermistor.
  • Page 19: Indoor Ac Fan Motor Malfunction

    Service diagnosis 8.4.2.3 Indoor AC fan motor malfunction Indoor Display The rotation speed detected by the Hall IC during fan motor operation is used to determine Method of abnormal fan motor operation Malfunction Detection when the detected rotation feedback signal don’t received in 2 minutes Malfunction Detection Conditions...
  • Page 20: Perfomance Curves Diagram

    Performance Curves Diagram 9 Performance Curves Diagram 9.1 Cooling capacity-temperature curves performance curves cooling value-temerature table outdoor tem p.(hum idity 46% ) indoor tem p. D B /W B 18 ℃ 20 ℃ 25 ℃ 32 ℃ 35 ℃ 40 ℃ 43 ℃...
  • Page 21 Performance Curves Diagram 9.2 heating capacity-temp.curves performance curves heating capacity and indoor/outdoor temp.table indoor tem p.(hum idity 46% ) outdoor tem p. D B /W B 15 ℃ 20 ℃ 25 ℃ -15 ℃ 4034 3586 3148 -5 ℃ 6270 5678 4963 5 ℃...
  • Page 22 Performance Curves Diagram 9.3 Coolin g power consumption-temp.curves power consumption value-temp.table indoor tem p. outdoor tem p.(hum id ity 46% ) D B /W B 18 ℃ 20 ℃ 25 ℃ 32 ℃ 35 ℃ 40 ℃ 43 ℃ 46 ℃ 1707 1801 1895...
  • Page 23 Performance Curves Diagram 9.4 heating power consumption-temp.curves p e rfo rm a n ce cu rve s p o w e r co n su m p tio n va lu e -te m p .ta b le in d o o r te m p .(h u m id ity 4 6 % ) o u td o o r te m p .
  • Page 24 Sincere Forever Haier Group Edited by : Wang Fang Haier Industrial Park, No.1, Haier Road Yang Xiaodong 266101, Qingdao, China_ Signed by : He shiquan Http //www.haier.com Approved by: Wu Hongjin Domestic air conditioner...