Haier AS105S2SF2FA-2 Service Manual
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Haier AS105S2SF2FA-2 Service Manual

Wall mounted type dc inverter free match
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SERVICE MANUAL
Wall Mounted Type
DC Inverter FREE MATCH F-Series
Model No. AS105S2SF2FA-2
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
(Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Date 2021-01-11
Version:V1

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Summary of Contents for Haier AS105S2SF2FA-2

  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...
  • Page 2 Contents ..............................................................................4 ................44...

  • Page 3: Model Name Explanation

    Introduction 1 Introduction 1.1 Model name explanation 2021 220~240V50HZ/1PH R32 refrigerant version 2 Platform of indoor units: F (F platform) Supermatch second generation normal efficiency Nominal cooling capacity (30000BTU/h) Type of indoor unit: S (wall-mounted) Indoor unit 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 List

    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 Features 2 Features Super quiet: Lower noise operation condition A-PAM DC inverter:With adoption of S-TYPE,S-PAM and PHASE control technology to works more stably at low-frequency,and is more energy-saving,mor powerful at high frequency. Long distance air supplying: The furthest air distance is 12 meters. Heating: When -15 can still heating natural heating maintenance:Heating Holding 10...

  • Page 10: Specifications

    3 Specifications 220-240v 30710 32420 2.56 3.71 2518 44 40 65/60/53...
  • Page 11 Specifications TECHNICAL SPECIFICATIONS-PARTS n i l heating Air flow rate(high) m³/h 1300 1300 1100/1000/900 Speed(super/high/low) 1000/900/800 Type ML fin-φ 7HI-HX tube Heat exchanger c t i 4*22*1.4 t,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter Temperature control Microcomputer 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: Sensors List

    Sensors list 4 Sensors list type Description Room sensor Its used for detecting room temperature Pipe sensor Its used for detecting temperature of evaporator Domestic air conditioner...

  • Page 13: Piping Diagrams

    Piping diagrams 5 Piping diagrams Electronic expansion valve Electronic expansion valve Domestic air conditioner...
  • Page 14 PCB (1) (Indoor control PCB) Note: Other designations UNIT MODEL PCB MODEL UNIT MODEL DISPLAY MODEL AS105S2SF2FA-2 0011800417B （26） AS105S2SF2FA-2 0011800387H...
  • Page 15 Connector Wiring diagrams Domestic air conditioner...

  • Page 17: Main Functions And Control Specification

    Functions and control 7 Functions 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 18: Dry Mode

    Functions and control 7.1.3 Dry mode * temperature control range: 16---30 * temperature difference: Control feature: send the dehumidifying 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 dehumidifying frequency for 10 minutes and then at the low dehumidifying mode for six minutes.

  • Page 19: Heating Operation Mode

    Functions and control *Defrosting function: preventing the frosting on the indoor heat exchanger (when cooling or dehumidifying). When the compressor works continuously for 6 minutes and the temperature of the indoor coils has been below 1 for 10 seconds, the compressor will be stopped and the malfunction will be recorded in the malfunction list.

  • Page 20: Turbo Function

    Functions and control * Residue heat sending. The indoor fan will send the residue heat at a low speed for 20 seconds. If other conditions are satisfied, when the compressor stops, the indoor system will operate at a light speed. The indoor fan will stop when the coil temperature is below the THHOT0. * Defrosting.

  • Page 21: Sleeping Function

    Functions and control 7.1.7 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 22 Functions and control 7.1.9 Emergency switch function Press the urgency button the buzzer will ring. The system will enter the automatic mode if you don’t press the button for more than 5 seconds. Under the system off mode, if you press the urgency key for 5 to 10 seconds, the system will start the test operation.
  • Page 23 Functions and control 7.1.10 Low load protection control In order to prevent the frosting of the indoor evaporator, the outdoor system will be stopped if the indoor heat interaction temperature is below 1 centigrade for 5 minutes, but the fan will continue to operate.

  • Page 24: Value Of Thermistor

    Functions and control 7.2 Value of thermistor Room sensor and Pipe Sensor R25 =10K B25 /50 =3700K 2% Temp.(( )) Max.(KŸ) Normal(KŸ) Tolerance( ) Min.(KŸ) 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 1.73 138.1285 124.3392 111.8256...
  • Page 25 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 26 Functions and control 4.0588 3.8287 3.6084 -1.70 1.62 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...
  • Page 27 Functions and control 1.0607 0.9599 0.8679 -3.74 3.42 1.0314 0.9326 0.8424 -3.80 3.46 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...

  • 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: Error Codes And Description Indoor Display

    Service diagnosis 10.3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Only For 498 and Outdoor fault description Reference Page 498A display (LED1 flash Other display (Red/Green Time times) Run □On★Flash■ Off) Communication fault Indoor and between indoor and outdoor Page.42 ■...

  • Page 31: Thermistor Or Related Abnormality

    Installations 10.3.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Outdoor display LED1 flash 10 times：Defrost temperature sensor failure LED1 flash 11 times：Suction temperature sensor failure LED1 flash 12 times：Ambient temperature sensor failure LED1 flash 13 times：Discharge temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...

  • Page 32: Installations

    Installations 10.3.2 EEPROM abnormal Indoor Display E4: Indoor EEPROM error Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times 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: Indoor Fan Motor Malfunction

    Installations 10.3.3 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 Malfunction when the detected rotation feedback signal don’t received in 2 minutes Decision Conditions Supposed Causes...

  • Page 34: Ipm Protection

    Installations Check whether Terminal on the outdoor mainboard is well inserted. it is normal Reinsert the terminals Electrify the machine again and turn it on in The motor and the Cool state with the remote controller. outdoor pcb are check whether the motor could run. well R emove fan m otor af te r s witch off the power.Measure the resistances...

  • Page 35: Over-Current Of The Compressor

    Installations Supposed ■ IPM protection dues to the compressor faulty Causes ■ IPM protection dues to faulty PCB of IPM module ■ Compressor wiring disconnected Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, else parts damage may be occurred.

  • Page 36: The Communication Fault Between Ipm And Outdoor Pcb

    Installations Electrify the machine again and turn it on with the remote controller, If malfunctions IPM Module is damaged and are reported before or upon the compressor needs replacing. being started up, The compressor is started normally, but malfunctions are reported after it has Repair the power supply run for some time.

  • Page 37: Power Supply Over Or Under Voltage Fault

    Installations 10.3.8 Power Supply Over or under voltage fault Outdoor display: 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 circuit. Malfunction Detection Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer Decision...

  • Page 38: Overheat Protection For Discharge Temperature

    Installations 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: LED1 flash 8 times Method of The Discharge temperature control is checked with the temperature being detected Malfunction by the Discharge pipe thermistor Detection Malfunction when the compressor discharge temperature is above 110℃ Decision Conditions Supposed...

  • Page 39: The Communication Fault Between Indoor And Outdoor

    Installations 10.3.10 The communication fault between indoor and outdoor Indoor display outdoor display LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB. Malfunction Detection Malfunction ■ The outdoor PCB broken leads to communication fault. Decision ■...
  • Page 40 Installations If the voltage is a constant value The indoor mainboard is of 0V DC to 5V DC.Or the voltage damaged; replace it with a between Communication line(red ) and N(white new one. line) is not close to18V DC when only indoor charged. Test the outdoor power is Check the cable supply 230VAC with a...
  • Page 41 Installations 10.3.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor Display LED1 flash 18 times LED1 flash 19 times Method of The position of the compressor rotor can not detected normally Malfunction Detection Malfunction when the wiring of compressor is wrong or the connection is poor; Decision or the compressor is damaged Conditions...

  • Page 42: High Work-Intense Protection

    Table of Contents 10.3.12 High work-intense protection Outdoor display LED1 flash 21 times Method of High work-intense control is activated in the heating mode if the temperature Malfunction being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger Decision rises above 65℃...
  • Page 44 Circuit diagrams Domestic air conditioner...
  • Page 45 rocedure...
  • Page 46 Remove Procedure Procedure Points Step Hold the front panel by the tabs on the both sides and lift it until it stops with a click . Loosen the screw and lift up the casing cover. Loosen the screw and lift up the control box cover.
  • Page 47 Remove Procedure Remove the air filters and Step Procedure Points horizontal flap Lift the first air filter upwards slightly and then pull it out downwards. Lift the second air filter upwards slightly and then pull it out downwards. Lift the third air filter upwards slightly and then pull it out downwards.
  • Page 48 Remove Procedure Remove the casing Step Procedure Points Release the screw covers(4EA) lift up the screw covers and then release them. Loosen the marked screw (8EA) Domestic air conditioner...
  • Page 49 Remove Procedure Step Procedure Points HOLE (5EA) When assembling, install the front Release the marked grille horizontally hooks (5EA) and then so as not to stuff pull the front grille out the flap inside. horizontally and When assembling, remove it. make sure the four hooks are caught properly.
  • Page 50 Remove Procedure Release stepping motor Step Procedure Points and the control box Loosen the stepping motor screws (4EA) and then remove the stepping motor. Remove the control box Loosen the control box screws (2EA) and then pull it. Domestic air conditioner...
  • Page 51 Remove Procedure Removal of Heat Step Points Procedure Exchanger Loosen the marked screws(2EA). Pull mounting plate and heat exchanger bracket, and then release them. Release fixture plate from the base frame hook and remove it. Domestic air conditioner...
  • Page 52 Remove Procedure Procedure Points Step Loosen the screws. Remove the heat exchanger. Remove Fan motor Loosen the marked screws(4EA) and release the cover of fan motor. Domestic air conditioner...
  • Page 53 Remove Procedure Step Procedure Points Loosen the marked screw (1EA) and remove fan motor. Lift up the right part of the fan and remove it. Domestic air conditioner...
  • Page 54 Sincere Forever Haier Group 266101,Qingdao,China http://www.haier.com...

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