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Haier N Series Service Manual

Wall mounted type
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SERVICE MANAUL
Wall Mounted Type
N-Series
HSU-24LNL03/R2(T3)
Model No.
AS24NE1LAA
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：2016-7-1

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  • Page 1 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...

  • Page 2: Table Of Contents

    Contents 1 Introduction ..................... 1 2.Features ....................7 3 Specifications ..................8 4． Sensors list ..................... 9 5． Pinping diagrams .................. 10 6. Printed Circuit Board Connector Wiring Diagram ........ .11 7.Funcitions and Control ................. 14 8.Dimensional drawings ................35 9.Center of gravity .................

  • Page 3: Introduction

    1 Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph Fixed frequency Cool pump & Indoor unit Version number 70 platform Platform of indoor units: N (N pla tform) Nominal cooling capacity (24000BTU/h) Type of indoor unit: S (wall-mounted) Indoor unit Domestic air conditioner...
  • Page 4 Intuoduction     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 Intuoduction     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 Intuoduction     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 Intuoduction     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 Intuoduction     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: Features

    Specifications     2.Features 4 Fan setting :Select the fan speed LO,MED,HI,AUTO Anti-mold filter: Catches most small particles and remove unpleasant odors effectively. Sleep mode: The setting temperature and the indoor noise can be adjusted to a more comfortable level when you set the “sleep mode”...

  • Page 10: Specifications

    c i f 3 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT n i l 6.74 (T1)/6.01(T3) Capacity rated Btu/h 23000(T1)/20500(T3) Power Consumption(Rated) 1.95 (T1)/2.40(T3) 3.457 (T1)/2.503(T3) ³ × TECHNICAL SPECIFICATIONS Sound 48/45/42 peessure(high/medium/low) Sound level Sound power(high/medium/low) Domestic air conditioner...

  • Page 11: 4． Sensors List

    c i f TECHNICAL SPECIFICATIONS-PARTS n i l ³ Speed(super/high/low) 1350/1150/1050/950 Type ML fin-φ7HI-HX tube Heat exchanger Segment *stage*fitch 2*18*1.4 t,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter Microcomputer Control Temperature control l l o YL-HE22 Note: the data are based on the conditions shown in the table below Conversation formulae n i l Kcal/h= KW×860...

  • Page 12: 5． Pinping Diagrams

    Piping diagrams 5 Piping diagrams Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Connector Wiring Diagram 6.Printed Circuit Board Connector Wiring Diagram 6.1 Indoor unit Connectors Indoor PCB series PCB connector Connect with load connector for power line N CN17 connector for power line L CN23 connector for compressor control CN501 connector for up and down step motor CN12 connector for right step motor connector for ambient temp.
  • Page 14 Connector Wiring Diagram Connector wring diagram CN501 CN48 CN12 CN23 CN17 Domestic air conditioner...
  • Page 15 Wiring Diagrams DC FAN MOTOR C O N 3 C O N 1 left stepmotor up-down stepmotor C N 5 0 1 EMERGENCY SWITCH PIPE TEMP. SENSOR C N 6 AMBIENT TEMP SENSOR RECEIVER C N 7 DISPLAY Domestic air conditioner...

  • Page 16: Funcitions And Control

    Functions and Control     7 Funcitions and Control 7.1 Main functions and control specification Including brief introduction to air conditioners of series models and electric control function. 7.1.1 Automatic running (1) Single cold automatic run mode: First entering into this mode, the main control “MCU” determines the corresponding work pattern according to the indoor temperature between cooling mode and blowing mode.
  • Page 17 Functions and Control     temperature control precision: ±1℃ compressor can’t be controlled by temperature sensor within 2 minutes after it starts. control character: when Tr ≥ Ts, outlet air from compressor is on and indoor fan motor run at fixed wind speed. When Tr<...
  • Page 18 Functions and Control           State1   State2   State3     Ts-1 Ts+2 Ts+2   When all the ranges alternate, there is ±1℃difference. 7.1.5 Heating mode: (cooling only have no the mode) *Temperature control range : 16℃—30℃ *Temperature control precision: ±1℃...
  • Page 19 Functions and Control     *Warm blast: If the temperature sensor is off. Compressor stops running. If the temperature of coil pipe is above 23℃, fan motor enter breeze mode; and if the temperature of coil pipe is below 20℃, fan motor stops running. 7.1.5.2 High temperature protection and high temperature expiration protection: 7.1.5.2.1 High temperature prevention: When the temp.
  • Page 20 Functions and Control     7.1.6 Timer function: You can set 24-hour timer on or timer off as required, and the minimum time unit is 1 minute. After setting, the indicator of indoor unit is on , and it is off when timer setting is completed. There are several timer mode as follows. 5.1.5.1 Timer on: The LED of “timer on”...
  • Page 21 Functions and Control     5.1.7.2 If the switch is kept pressed for 5 seconds, buzzer ring two times and unit enter enter test run mode. 5.1.7.3 Press the switch again, and then closes. 5.1.7.4 Enter emergency operation from timer mode, then timer is cancelled. 7.1.9 Test run: 5.1.8.1 The temperature sensor of inlet air doesn’t work, and compressor starts (but subject to the limit of -minute delay excluding the first time), and high wind, cooling, and air door is open.
  • Page 22 Functions and Control     256.7445 231.4612 208.4122 -1.74 1.59 240.9897 217.6590 196.3462 -1.72 1.57 226.3000 204.7662 185.0545 -1.70 1.56 212.5973 192.7176 174.4829 -1.68 1.54 199.8093 181.4531 164.5813 -1.66 1.53 187.8698 170.9169 155.3033 -1.64 1.51 176.7176 161.0578 146.6059 -1.62 1.49 166.2961 151.8284 138.4495...
  • Page 23 Functions and Control     23.8050 23.0000 22.1950 -0.78 0.77 22.7500 21.9499 21.1520 -0.78 0.78 21.7477 20.9536 20.1638 -0.82 0.81 20.7951 20.0081 19.2272 -0.86 0.85 19.8895 19.1104 18.3394 -0.89 0.88 19.0285 18.2581 17.4974 -0.93 0.92 18.2094 17.4484 16.6988 -0.97 0.95 17.4302 16.6792 15.9410...
  • Page 24 Functions and Control     4.2154 3.8605 3.5312 -2.53 2.35 4.0682 3.7216 3.4004 -2.58 2.39 3.9268 3.5883 3.2750 -2.63 2.43 3.7910 3.4605 3.1549 -2.68 2.48 3.6606 3.3378 3.0398 -2.73 2.52 3.5353 3.2201 2.9294 -2.77 2.56 3.4150 3.1072 2.8237 -2.82 2.60 3.2993 2.9987 2.7222...
  • Page 25 Functions and Control     1.0644 0.9342 0.8189 -4.82 4.27 1.0344 0.9070 0.7943 -4.88 4.32 1.0053 0.8807 0.7706 -4.94 4.37 0.9771 0.8553 0.7478 -5.00 4.41 0.9499 0.8307 0.7256 -5.06 4.46 0.9235 0.8070 0.7043 -5.12 4.51 0.8980 0.7840 0.6837 -5.18 4.56 0.8734 0.7618 0.6637...
  • Page 26 Functions and Control     41.4249 38.6207 35.9739 -1.45 1.37 39.3792 36.7676 34.2983 -1.43 1.35 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31 33.8936 31.7844 29.7796 -1.36 1.29 32.2608 30.2968 28.4267 -1.34 1.28 30.7162 28.8875 27.1431 -1.32 1.26 29.2545 27.5519 25.9250...
  • Page 27 Functions and Control     6.2437 5.9687 5.7007 -1.21 1.18 6.0170 5.7454 5.4812 -1.25 1.22 5.7997 5.5316 5.2712 -1.29 1.25 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 5.2001 4.9430 4.6944 -1.41 1.36 5.0163 4.7630 4.5185 -1.45 1.40 4.8400 4.5905 4.3500...
  • Page 28 Functions and Control     1.5000 1.3721 1.2540 -3.12 2.88 1.4562 1.3308 1.2151 -3.17 2.93 1.4139 1.2910 1.1776 -3.22 2.97 1.3730 1.2525 1.1415 -3.27 3.01 1.3335 1.2153 1.1066 -3.32 3.06 1.2953 1.1794 1.0730 -3.38 3.10 1.2583 1.1448 1.0405 -3.43 3.15 1.2226 1.1113 1.0092...

  • Page 29: Dimensional Drawings

    Service Diagnosis 8.Dimensional drawings Indoor unit 1115mm 336mm 711.2mm 834mm 75mm 330mm 75mm 9.Center of gravity Indoor unit 1115mm 163.2mm 380.09mm 336mm Domestic air conditioner...

  • Page 30: 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 31 Troubleshooting Caution： Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. 10.4.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors Malfunction Detection Malfunction...
  • Page 32 10.4.2 EEPROM abnormal Indoor Display E4: indoor EEPROM error Method of The Data detected by the EEPROM are used to determine MCU Malfunction Detection Malfunction when the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed ■...
  • Page 33 Check whether Terminal on the outdoor mainboard is well inserted. Reinsert the terminals Is it normal? Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor can run？ Measure the voltage between 1 and 3 of the terminal of fan motor on the mainboard about DC310V, Measure the voltage between 3 and 4 of the terminal about DC15V.

  • Page 34: Circuit Diagrams

    11. Circuit diagrams 备注：如果没有特殊说明，电阻及瓷片电容 均使用 0805 或 0603 封装 R100 100nF C32 100nF C33 100nF R101 24C04 EEPROM MODE OFF OFF 1-12-SCL J8 ON TJC8-04- 立式 1-11-SDA 在线烧写 100nF 2SA1037AK TJC8-04- 立式 23 26 33 35 R33 560Ω 1-6-RST 4.7uF-50V 100nF R27 R28 B4B-XH-A( 原色...
  • Page 35 Sincere Forever Haier Group Edited by : Zhang Meijiao Haier Industrial Park, No.1, Haier Road Signed by : Shen weijie 266101, Qingdao, China_ Approved by: He shiquan Http：//www.haier.com Domestic air conditioner...
  • Page 36 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 37 Removal Procedure Removal of front panel front panel Remove the foam cushion Loosen the screw Domestic Air Conditioner...
  • Page 38 Removal Procedure Lift up the control box cover Loosen the screw Lift up the control box cover Domestic Air Conditioner...
  • Page 39 Removal Procedure Remocal of front panel Pull the wires out of the control box and then release the pivots on both sides of the unit to remove the front panel. Remove the air filters Domestic Air Conditioner...
  • Page 40 Removal Procedure Remove the casing three Domestic Air Conditioner...
  • Page 41 Removal Procedure horizontal flap and the stepper motor flap Loosen the screws and remove the stepper motor Domestic Air Conditioner...
  • Page 42 Removal Procedure horizontal louver and control box Every blade go round and round,then move Loosen the screws Domestic Air Conditioner...
  • Page 43 Removal Procedure Loosen the hook and the service Cover Lift up the exchanger and remove it Domestic Air Conditioner...
  • Page 44 Removal Procedure motor cover motor cover Domestic Air Conditioner...
  • Page 45 Removal Procedure Domestic Air Conditioner...

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