Haier AP24DF1HRA Service Manual
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Haier AP24DF1HRA Service Manual

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SERVICE MANUAL
Packaged Type
DC Inverter
Model No.
AP24DF1HRA
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
2017 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version V1
Date 2017-02-22

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Summary of Contents for Haier AP24DF1HRA

  • 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 fo 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. System configuration................9. Dimensional drawings ................10.

  • Page 3: Introduction

    Intuoduction 1 Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph DC inverter Heat pump & R410A refrigerant Version number 72N Platform Platform of indoor units: Cabinet Nominal cooling capacity (24000BTU/h) Type of indoor unit: P (packaged type) 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 Super quiet: Lower noise operation condition Confortable sleep The setting temperature and the indoor noise can be adjusted to a more comfortable level when you set the “sleep mode” during night sleep. 4 Fan setting :Select the fan speed LOW,MED,HI,AUTO 3D air flow: The 3D airflow is able to deliver the airflow horizontally and vertically.

  • Page 10: Specifications

    Specifications 3 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling heating Capacity rated Btu/h 24572 30715 1921 ³ 4.25*10 ³ TECHNICAL SPECIFICATIONS 1810 × × 1935 × × Sound peessure(high) Sound level Sound power(high) dB(A) Domestic air conditioner...

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Air flow rate(high) m³/h 1200 1200 Type ML fin- 7HI-HX tube Heat exchanger c t i t,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter Microcomputer Control Temperature control l l o HB15 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

    Piping diagrams 5 Pinping diagrams electrical expansion valve electrical expansion valve Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Connector Wiring diagrams 6. Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) (Control PCB) Connector for power N CN17 Connector for power L CN21 CN35 Connector for communication with outdoor CN2’ CN4 CN5 step motor Connector for CN8 CN13 Connector for heat exchanger thermistor and Room temperature thermistor Connector for anion generator CN11 Connector for display board...
  • Page 14 Connector Wiring diagrams PCB(1)
  • Page 15 Connector Wiring diagrams Wiring diagrams INDOOR WIRING DIAGRAM 0010543924A CN17 CN55 TERMINAL CN21 CN22 CN35 CN18 T3.15A/250V ~ CN54 FUSE COMPUTER BOARD FAN MOTOR Down guide motor Up guide motor CN11 CN13 Anion generator B:Black NOTES: CN33 CN34 Control WIFI MODULE W:White ★...

  • Page 16: Functions And Control

    Functions and Control 7.Funcitions and Control 7.1 Main functions and control specification 7.1.1 Automatic operation When the running mode is turned to automation after starting the system, the system will first determine the running mode according to the current room temperature and then will run according to the determined mode. Tr in the following selection conditions means room temperature, Ts means setting temperature, Tp means temperature of indoor coil pipe Tr＞Ts-3...
  • Page 17 Functions and Control 7.1.3 Demoisture mode. * temperature control range: 16-30 * temperature difference: ±1 Control feature: send the demoisture signal to the outdoor system. When Tr>Ts+2 , the compressor will be turned on, the indoor fan will operate at the set speed. When Tr is between the Ts and Ts+2 , the outdoor system will operate at the high demoisture frequency for 10 minutes and then at the low demoisture mode for six minutes.
  • Page 18 Functions and Control *Indoor fan control Airflow speed control: (temperature difference 1 ) manual control: You can choose high, medium, low and automatic speed control. Automatic: When Tr Ts-5 , high speed. When Ts-5 ＜　 Tr T s-3 , medium speed. When Tr>...
  • Page 19 Functions and Control 7.1.6 Timing You can set 24 hours’ on/off timing accordingly. After the setting, the timing indicator will be lightened. Also, the light will be turning off after the timing is finished. The followings are several timing methods. 1.system /on timing: The timing indicator will be lightened and the indoor system is under the waiting mode.
  • Page 20 Functions and Control Power Saving Operation 7.1.8 Automatic adjusting with the environmental temjperature, running with powe saving. 1, Available operation mode: Heating, Cooling, Dehumidifying. 2, Control features: After the power saving is set, the host machine will judge the temperature difference between setted temperature and indoor room temperature and unit running time.
  • Page 21 Functions and Control 7.2 Value of thermistor Room sensor and Pipe Sensor R25 =10K B25 /50 =3700K 3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 165.2170 147.9497 132.3678 -1.94 1.75 155.5754 139.5600 125.0806 -1.93 1.74 146.5609 131.7022 118.2434 -1.91 1.73...
  • Page 22 Functions and Control 23.0284 21.8398 20.6939 -1.18 1.14 21.9714 20.8659 19.7982 -1.15 1.12 20.9688 19.9409 18.9463 -1.13 1.09 20.0176 19.0621 18.1358 -1.11 1.07 19.1149 18.2270 17.3646 -1.08 1.05 18.2580 17.4331 16.6305 -1.06 1.03 17.4442 16.6782 15.9315 -1.03 1.01 16.6711 15.9601 15.2657 -1.01 0.99...
  • Page 23 Functions and Control 3.9206 3.6943 3.4780 -1.74 1.66 3.7878 3.5654 3.3531 -1.78 1.70 3.6601 3.4416 3.2332 -1.82 1.74 3.5374 3.3227 3.1183 -1.87 1.78 3.4195 3.2085 3.0079 -1.91 1.82 3.3060 3.0989 2.9021 -1.95 1.85 3.1969 2.9935 2.8005 -2.00 1.89 3.0919 2.8922 2.7029 -2.04 1.93...
  • Page 24 Functions and Control 1.0030 0.9061 0.8179 -3.85 3.51 0.9756 0.8806 0.7941 -3.90 3.55 0.9490 0.8558 0.7711 -3.96 3.60 0.9232 0.8319 0.7489 -4.01 3.64 0.8983 0.8088 0.7275 -4.07 3.69 0.8741 0.7863 0.7067 -4.12 3.74 0.8507 0.7646 0.6867 -4.18 3.78 0.8281 0.7436 0.6672 -4.23 3.83...

  • Page 25: System Configuration

    System configuration 8 System configuration 8.1System configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling(or heating) well, and to know a clever method of using it.

  • Page 26: Dimensional Drawings

    Dimensional drawings 9.Dimensional drawings--Deepth & Wide & Height unit:mm 1810 10.Dimensional drawings-- other parts unit:mm outlet grille Inlet grille Back Left Right Domestic air conditioner...

  • Page 27: Service Diagnosis

    Seivice diagnosis 11 Service Diagnosis 11.1 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 28 Seivice diagnosis 11.4 Error Codes and Description indoor display Code indication Indoor Reference Outdoor fault description displaying Page (LED1 flash panel code times) indication Indoor and Communication fault between indoor and Page . Outdoor outdoor units Page . 27 Room temperature sensor failure Indoor Malfunction Heat-exchange sensor failure Page .
  • Page 29 Seivice diagnosis 11.4.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure outdoor display LED1 flash 10 times Frost-removing temperature sensor failure LED1 flash 11 times Suction temperature sensor failure LED1 flash 12 times Ambient temperature sensor failure LED1 flash 13 times Exhaust temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...
  • Page 30 Seivice diagnosis 11.4.2 EEPROM abnormal Indoor Display E4: indoor EEPROM error outdoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Method of malfunction The Data detected by the EEPROM are used to determine MCU detection Malfunction when the data of EEPROM is error or the EEPROM is damaged detection conditions Faulty EEPROM data...
  • Page 31 Seivice diagnosis 11.4.3 Indoor fan motor malfunction Indoor Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection when the detected rotation feedback singal don’t receiced in 2 minutes Malfunction Decision Conditions...
  • Page 32 Seivice diagnosis Turn off power supply and rotate fan by hand Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan Does it rotate? motor connector, then turn power ON Check output of fan motor connector Is motor power voltage DC310V...
  • Page 33 Seivice diagnosis 11.4.4 Outdoor DC fan motor fault Outdoor diplay LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on malfunction detection Malfunction detection when the data of EEPROM is error or the EEPROM is damaged conditions DC fan motor protection dues to the DC fan motor faulty Supposed causes...
  • Page 34 Seivice diagnosis 11.4.5 IPM protection Outdoor diplay LED1 flash 2 times Method of malfunction IPM protection is detected by checking the compressor running condition and so on detection The system leads to IPM protection due to over current Malfunction The compressor faulty leads to IPM protection detection conditions circuit component of IPM is broken and led to IPM protection...
  • Page 35 Seivice diagnosis 11.4.6 Over-current of the compressor LED1 flash 3 or 24 or 25 times Outdoor diplay Method of he current of the compressor is too high malfunction detection when the IPM Module is damaged or the compressor is damaged. power supply Malfunction detection voltage is too low or too high...
  • Page 36 Seivice diagnosis 11.4.7 The communication fault between IPM and outdoor PCB Outdoor diplay LED1 flash 4 times Method of Communication is detected by checking the IPM module and the outdoor PCB malfunction detection The outdoor PCB broken leads to communication fault Malfunction detection The IPM module broken leads to communication fault conditions...
  • Page 37 Seivice diagnosis 11.4.8 Power Supply Over or under voltage fault Outdoor diplay LED1 flash 6 times The power supply is over voltage Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection malfunction detection An voltage signal is fed from the voltage detection circuit to the microcomputer Malfunction detection conditions...
  • Page 38 Seivice diagnosis 11.4.9 Overheat Protection For Discharge Temperature Outdoor diplay LED1 flash 8 times Method of The Discharge temperature control is checked with the temperature being detected by malfunction detection the Discharge pipe thermistor when the compressor discharge temperature is above 110 Malfunction detection conditions Electronic expansion valve defective...
  • Page 39 Seivice diagnosis 11.4.10 The communication fault between indoor and outdoor indoor diplay Outdoor diplay LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB malfunction detection The outdoor PCB broken leads to communication fault Malfunction detection The indoor PCB broken leads to communication fault conditions...
  • Page 40 Seivice diagnosis Check the indoor mainboard. Measure the voltage between Jumpers 3 and 4 of IC1 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter. If the voltage is of a constant value of 0V DCto5V DC If 230VAC is available but 310DC not, the power module is damaged, replace it...

  • Page 41: Circuit Diagrams

    Circuit diagrams 11.4.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor diplay LED1 flash 18 times LED1 flash 19 times Method of The position of the compressor rotor can not detected normally malfunction detection when the wiring of compressor is wrong or the connection is poor; or the compressor Malfunction detection is damaged conditions...
  • Page 42 Circuit diagrams 11.4.12 High work-intense protection LED1 flash 21 times Outdoor diplay Method of High work-intense control is activated in the heating mode if the temperature being malfunction detection sensed by the heat exchanger thermistor exceeds the limit. Activated when the temperature being sensed by the heat exchanger rises above Malfunction detection twice in 30 minutes.
  • Page 43 Circuit diagrams Circuit diagrams Domestic air conditioner...

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