Haier AS18ND3HAA Service Manual
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Haier AS18ND3HAA Service Manual

Wall mounted type on/off n-series
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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
SERVICE MANUAL
Model No.
HSU-18HNM03/R2(UKR)
WARNING
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Wall Mounted Type
ON/OFF N-Series
AS18ND3HAA
2017 (Qingdao Haier Air Conditioner General corp. , Ltd)
Version V1
Date 2017-04-24

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Summary of Contents for Haier AS18ND3HAA

  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2017 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...

  • Page 2: Table Of Contents

    Table for contents Contents 1. Introduction .................... 1 2. Features ....................7 3. Specifications ..................8 4. Sensors list.................... 9 5. Piping diagrams ..................10 6. Printed Circuit Board Connector Wiring Diagram........11 7. Functions and Control ................8. Dimensional drawings ................9.

  • Page 3: Introduction

                                              ...
  • Page 4                                                     ...
  • Page 5                                           ...
  • Page 6                                              ...
  • Page 7                                          ...
  • Page 8                                          ...

  • Page 9: Features

                                                   ...

  • Page 10: Specifications

                                              ...

  • Page 11: Sensors List

    Sensors list TECHNICAL SPECIFICATIONS-PARTS cooling heating Air flow rate(high) m³/h 900 0 Speed(super/high/low) 1180/1000/800 1100/ 950/ 750 Type ML fin- 7HI-HX tube Heat exchanger t i f t,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter Microcomputer Control Temperature control l l o Note: the data are based on the conditions shown in the table below Conversation formulae n i l Kcal/h= KW×860...

  • Page 12: Piping Diagrams

           ...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

                                            ...
  • Page 14 Connector Wiring diagrams Wiring Diagrams Indoor DC FAN MOTOR C0N3 ION GENERATIOR C0N1 FUSE1 T3.15A/250VAC CN17 CN31 left stepmoter CN23 up-down stepmoter CN501 EMERGENCY SWITCH PIPING TEMP SENSOR AMBIENT TEMP SENSOR RECEIVER DISPLAY 1(L) 2(N) Domestic air conditioner...

  • Page 15: Functions And Control

                                                   ...
  • Page 16                                                    ...
  • Page 17                                                    ...
  • Page 18                                                    ...
  • Page 19                                               ...
  • Page 20                                          ...
  • Page 21                                         ...
  • Page 22                                         ...
  • Page 23                                         ...
  • Page 24                                          ...
  • Page 25                                         ...
  • Page 26                                         ...
  • Page 27                                         ...

  • Page 28: Dimensional Drawings

    Dimensional drawings 8.Dimensional drawings unit:mm 9.Center of gravity unit:mm Domestic air conditioner...

  • Page 29: Service Diagnosis

    Service diagnosis 10 Service Diagnosis 10.1 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. 2.
  • Page 30 Service diagnosis 10.4Codes and Description 10.4.1.Problem Symptoms and Measures Symptom Check Item Details of Measure Check to make sure that the rated voltage is None of the units Check the power supply. supplied. operates Check the indoor PCB Check to make sure that the indoor PCB is broken Equipment operates but does Diagnosis...
  • Page 31 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 32 Service diagnosis 10.4.2.3 Indoor DC fan motor malfunction Indoor Display Method of Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Method of Malfunction Malfunction abnormal fan motor operation Malfunction Detection Detection Detection When the detected rotation feedback signal don’t received in 2 minutes...

  • Page 33: Circuit Diagrams

    Circuit Diagram 11.Circuit Diagram Domestic air conditioner...
  • Page 34 Circuit Diagram Domestic air conditioner...
  • Page 35                                                                                            ...
  • Page 36 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2017 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...
  • Page 37                                          ...
  • Page 38                                          ...
  • Page 39                                         ...
  • Page 40                                  ...
  • Page 41                                          ...
  • Page 42                                           ...
  • Page 43                                          ...
  • Page 44                                         ...
  • Page 45                                           ...
  • Page 46                                          ...
  • Page 47                                 ...

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