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Haier 1U12DR4EAA Service Manual

Wall mounted type on/off
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SERVICE MANUAL

Wall Mounted Type

ON/OFF
Model No.
1U12DR4EAA
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 2016-11-07

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  Summary of Contents for Haier 1U12DR4EAA

  • 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. Printed Circuit Board Connector Wiring Diagram .........11 6. Dimensional drawings................12 7. Center of gravity ..................12 8.Service diagnosis ..................13 9 Performance Curves Diagram............18 .
  • 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: D (D platform) Nominal cooling capacity (12000BTU/h) Type of outdoor unit: U (normal type) The maximum combination number Domestic air conditioner...
  • Page 9: Specifications

    Specifications 2 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling heating 3.31 3.57 Capacity rated Btu/h 11250 12150 Power Consumption(Rated) 1.03 0.99 ³ 1.6*10 ³ TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D 660×275×540 Packaged H*W*D 802×373×595 Dimensions Sound level Sound pressure ELECTRICAL SPECIFICATIONS cooling heating...
  • Page 10 Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Type Rotary Compressor Model 44A273BJ-FJKD Compressor Motor output 1120 NMOC Ze-Gles RB Oil type 68EP or equivalent Oil charge volume 0.32 Type Axial fan Motor output Air flow rate(high) m³/h 1500 Speed(high/low) Type ML fin- 7HI-HX tube Heat exchanger Row*stage*pitch...
  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Wiring Diagram 5. Printed Circuit Board Connector Wiring Diagram Wiring diagrams NOTE: 1.See above for wiring of heat pump type. 2.There are no dotted lines on cool only type.(marked with @ ),Wire is connected from 4 (marked with @ @ )on terminal block to 1. 3.The parts are optional.
  • Page 14: Dimensional Drawings

    Dimensional drawings 6. Dimensional drawings 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: Performance Curves Diagram

    Performance Curves Diagram 9 Performance Curves Diagram 9.1 Cooling capacity-temperature curves Domestic air conditioner...
  • Page 21 Performance Curves Diagram 9.2 heating capacity-temp.curves Domestic air conditioner...
  • Page 22 Performance Curves Diagram 9.3 Cooling power consumption-temp.curves Domestic air conditioner...
  • Page 23 Performance Curves Diagram 9.4 heating power consumption-temp.curves Domestic air conditioner...
  • Page 24 Sincere Forever Haier Group Edited by : Wang Fang Haier Industrial Park, No.1, Haier Road Yang Xiaodong 266101, Qingdao, China_ Signed by : Yang Wenjun Http //www.haier.com Approved by: Wu Hongjin Domestic air conditioner...