Heiko AS68TDRHRA-C Service Manual
  1. Manuals
  2. Brands
  3. Heiko Manuals
  4. Air Conditioner
  5. AS68TDRHRA-C
  6. Service manual

Heiko AS68TDRHRA-C Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
This servic e informatio n is designed for experience d repai r technician s only and is not designe d for use by the genera l public.
It does not contai n warning s or caution s to advise non-technic al individu als of potentia l dangers in attemptin g to servic e a product.
Product s powered by electricit y shoul d be service d or repaire d only by experience d professiona l technicia ns. Any attemp t to service or
Repai r the produc t or product s deal t with in this servic e infor mation by anyone else could result in seriou s injury or death
SE RVICE MANUAL
Model
WARNING
AS68TDRHRA-C
Version V1
Date 2022-10-21

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AS68TDRHRA-C and is the answer not in the manual?

Questions and answers

Related Manuals for Heiko AS68TDRHRA-C

Summary of Contents for Heiko AS68TDRHRA-C

  • Page 1 SE RVICE MANUAL AS68TDRHRA-C Model WARNING This servic e informatio n is designed for experience d repai r technician s only and is not designe d for use by the genera l public. It does not contai n warning s or caution s to advise non-technic al individu als of potentia l dangers in attemptin g to servic e a product.

  • Page 2: Table Of Contents

    Table of 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

    Introduction 1. Introduction 1.1 Model name explanation Self-clean Apply toT1; 220~240V50HZ/1ph DC inverter Indoor units Version number 50T Platform Platform of indoor units: T (T platform) 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 ●...
  • Page 5 Intuoduction When disconnecting the suction or discharge pipe of the compressor at the welded section, release the refrigerant gas completely at a well-ventilated place first. If there is a gas remaining inside the compressor , the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected, and it can cause injury.
  • Page 6 Intuoduction conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can cause an electrical shock, excessive heat generation or fire. When relocating the equipment, make sure that the new installation site has sufficient strength to withstand the weight of the equipment.
  • Page 7 Intuoduction itself is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters, stoves and ranges. When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent children from swallowing it.
  • 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. ●...

  • Page 9: Features

    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 indoor unit is improved by optimized motor,fan and air duct so as to provide long distance airflow with 12m+ maximum.

  • Page 10: Specifications

    Specifications 3.Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT n i l 6.8(2.1-6.8) 6.8（2.2-8.5) Capacity rated Btu/h 23200(7505-23890） 22180(7160-23200） 2.11 1.83 3.23 3.71 1960 ³ 2.8*10 ³ TECHNICAL SPECIFICATIONS 1008*318*225 1085*403*329 11.6 14.4 White Sound dB(A) 49/44/38/33 49/44/38/33 pressure(Hi/Mid/Lo) Sound level dB(A)

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Air flow rate(high) m³/h 1100 1050/950/850 Speed(Hi/Mid/Lo) 1200/1050/900 Type ML fin- 7HI-HX tube Heat exchanger c t i Right,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter 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 Piping diagrams 12.7CuT 6.35CuT 12.7CuT 6.35CuT Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Pin-3 and Pin-4 combined control, corresponding to 23, 26,33and35of the machine respectively ) ) 4 ON means keep; OFF means cut N-RC DISPLAY SERIES 325/498 387/1045 UNIT MOUDLE PCB MOUDLE DISPLAY MOUDLE AS68TDRHRA-C 0011800646L(23) OFF OFF OFF OFF 0011801045 ON OFF Domestic air conditioner...
  • Page 14 Printed circuit board connector wiring diagram PCB(1) Domestic air conditioner...

  • Page 15: Functions And Control

    Functions and control Wiring diagrams INDOOR UNIT 0010561514 INDOOR UNIT DIAGRAM DC FAN MOTOR GENERATOR C0N3 C0N2 C0N1 FRESH AIR IRED CONTROLLER CN21 UP-DOWN CN5' STEPMOTOR CN11 CN11' CN52 LEFT STEPMOTOR CN23 CN51 ROOM CARD CN34 WIFI 1 2 3 4 SWITCH EMERGENCY CN14...
  • Page 16 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.
  • Page 17 Functions and control 7.1.3 Dehumidifying 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 18 Functions and control malfunctions when dehumidifying. * Timing system on/off function. * Dormant control functio n. 7.1.4 Heating operation mode. * temperature control range: 16---30 * temperature difference: * control feature: the temperature compensation is automatically added and the system will send the heating signals to the outdoor system.
  • Page 19 Functions and control temperature compensation (4 ) will be added. When the status is switched off, the compensation will be erased. 7.1.5 Strength operation The system enters the mode after receiving the ‘strength signal’. Send strength operation signal to the outdoor system. The mode change finishes the strength operation.
  • Page 20 Functions and control 7.1.9 Dormant operation The dormant timing is an eight hours unadaptable one. The timing signs are shown on the V series board. (RC series show the dormant signal, the timing light is lighted on the 6 lights board). 2.1 Under the cooling/ dehumidifying operation, after the setting of the dormant operation, the set temperature will be raised for 1 centigrade after 1 hour’s operation and will be raised for 1 centigrade 1 hour later.
  • Page 21 Functions and control 7.1.11 Low load protection control In order to prevent the frosting of the indoor heat interaction device, 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 22 Functions and control 3 .indoor malfunction: Out door malfunction: When the indoor system receives the outdoor malfunction codes, it will store the code into E2 for the malfunction list resume. The indoor system will continue to operate according to the original status, the malfunction code will not be revealed or processed. 4.
  • Page 23 Functions and control R25 =10K B25 /50 =3700K 2% Max.(KΩ) Normal(KΩ) Min.(KΩ) Temp.(( )) 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 1.73 138.1285 124.3392 111.8256 -1.89 1.71 130.2371 117.4366 105.7989 -1.87 1.70 122.8484 110.9627...
  • Page 24 Functions and control 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 15.9366 15.2770 14.6315 -0.98 0.96 15.2385 14.6268 14.0271 -0.96 0.94 14.5748 14.0079 13.4510 -0.93 0.92...
  • Page 25 Functions and control 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 2.9909 2.7948 2.6092 -2.08 1.97 2.8936 2.7012 2.5193 -2.13 2.01...
  • Page 26 Functions and control 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 0.8061 0.7233 0.6484 -4.29 3.88...

  • Page 27: Center Of Gravity

    Seivice diagnosis 8.Dimensional unit:mm 1008 9.Center of gravity unit:mm 1008 431.5 Domestic air conditioner...

  • Page 28: 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.When a signal transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.
  • Page 29 Service Diagnosis Error Codes and Description indoor display 10.4 Split board: LED1 light of outdoor PCB flash; All-in-one board: LED2 light of outdoor PCB flash OUTDOOR ERROR CODE FAULT DESCRIPTION SPARE PART (LED FLASH TIMES) Indoor PCB Indoor and Communication fault between indoor Outdoor PCB Outdoor and outdoor units...
  • Page 30 Service Diagnosis OUTDOOR ERROR CODE FAULT DESCRIPTION SPARE PART (LED FLASH TIMES) Lack of refrigerant Refrigerant 4-way valve reverse failure 4-way valve Power over/under voltage protection Power module Outdoor pipe temperature sensor High pressure protection Outdoor PCB Outdoor coil temperature sensor Defrost temperature sensor Power module Outdoor Alternating current over...
  • Page 31 Service Diagnosis 10.4.1 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 Malfunction...
  • Page 32 Service Diagnosis 10.4.2 EEPROM abnormal E4: Indoor EEPROM error Indoor Display Indoor 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 Decision Conditions Supposed...
  • Page 33 Service Diagnosis Indoor DC fan motor malfunction 10.4.3 Indoor Display E14 Indoor DC fan motor malfunction Method of When the fan motor is running, the speed detected by the Hall IC is used to judge the Malfunction abnormal operation of the fan motor Detection Malfunction When the detected rotation feedback signal don’t received in 2 minutes...
  • Page 34 Service Diagnosis Turn on the unit and check if Measure whether there is a voltage the motor can run pulse (0-15VDC) between 4 and 5 of the CN9 terminal on the indoor PCB The indoor motor is damaged and need replace Is it ok? The indoor PCB is damaged and need replace...
  • Page 35 Service Diagnosis 10.4.4 Outdoor DC fan motor fault Outdoor display F8 LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Detection Malfunction When the detected rotation feedback signal don’t received i n2 minutes Decision Conditions ■...
  • Page 36 Service Diagnosis The resistances The module PCB is between black line and The resistances are damaged, replace it red line, between black more than 40kΩ with a new one. line and white line of the fan terminal of outdoor PCB are greater than 10MΩ...
  • Page 37 Service Diagnosis 10.4.5 IPM protection Outdoor display: F1 LED1 flash 2 times Method of IPM protection is detected by checking the compressor running condition and so on Malfunction Detection Malfunction The system leads to IPM protection due to over current The compressor faulty leads to IPM protection Decision Circuit component of IPM is broken and led to IPM protection...
  • Page 38 Service Diagnosis 10.4.6 Over-current of the compressor Outdoor Display F22, F2, F23 LED1 flash 3 or 24 or 25 times Method of The current of the compressor is too high Malfunction Detection Malfunction When the IPM Module is damaged or the compressor is damaged. Decision Conditions Power supply voltage is too low or too high...
  • Page 39 Service Diagnosis 10.4.7 The communication fault between IPM and outdoor PCB Outdoor display: F3 LED1 flash 4 times Method of Malfunction Communication is detected by checking the IPM module and the outdoor PCB Detection Malfunction ■ The outdoor PCB broken leads to communication fault Decision ■...
  • Page 40 Service Diagnosis 10.4.8 Power Supply Over or under voltage fault Outdoor display: F19 LED1 flash 6 times An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Method of The power supply is over voltage Malfunction Detection Malfunction...
  • Page 41 Service Diagnosis 10.4.9 Overheat Protection for Discharge Temperature Outdoor display: F4 LED1 flash 8 times Method of Check the control of the discharge temperature by the temperature detected by the Malfunction discharge pipe thermistor Detection Malfunction Decision When the compressor discharge temperature is above 110℃ Conditions ■...
  • Page 42 Service Diagnosis 10.4.10 The communication fault between indoor and outdoor Split board Indoor display E7 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 The indoor PCB broken leads to communication fault.
  • Page 43 Service Diagnosis Check the indoor PCB: only indoor charged measure the voltage between 3 and 4 of IC6 on the indoor PCB with a universal meter. And measure the voltage between CN23(S) and CN17 (L) with a universal meter. If the voltage is a constant value from DC 0V to DC 5V.Or The indoor PCB is the voltage between...
  • Page 44 Service Diagnosis Remove fan motor after Fan motor is switch off the power and damaged. And restart the unit, the LED replace it with a new 1 becomes light or flash. one. Test the fan motor terminal resistance between pin 1(310V) and pin 4(0V), or pin 5(15V) and pin 4(0V) of CN21 are close to 0mΩ...
  • Page 45 Service Diagnosis All-in-one board Indoor display E7 outdoor display LED2 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  The indoor PCB broken leads to communication fault. Decision ...
  • Page 46 Service Diagnosis Check the indoor PCB: Only indoor charged measure the voltage between 3 and 4 of IC6 on the indoor mainboard with a universal meter. And measure the voltage between CN23(S) and CN52 (L) with a universal meter. If the voltage is a constant value of 0V DC to 5V DC .Or the voltage between communication line (red) The indoor PCB is damaged;...
  • Page 47 Service Diagnosis Remove fan motor after switch off the power and Fan motor is damaged. Replace restart the unit, the LED 2 it with a new one. becomes light or flash. Test the fan motor terminal resistance between pin 1 (310V) and pin 4 (0V), or pin5 (15V) and pin4 (0V) of CN21 are close to 0mΩ...
  • Page 48 Service Diagnosis 10.4.11 Loss of synchronism detection (Compressor position detection circuit fault) Outdoor Display F11 LED1 flash 18 times F28 LED1 flash 19 times Method of The position of the compressor rotor can’t 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 49 Service Diagnosis 10.4.12 High work-intense protection Outdoor display E 9 LED1 flash 21 times High work-intense control is activated in the heating mode if the temperature Method of being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction Activated when the temperature being sensed by the heat exchanger rises above 65℃...
  • Page 50 ircuit Diagra 11 Circ c uit Diag g rams B4B-XH CN3 0 R2 9 R3 0 R4 4 C1 1 R4 2 10K-0805 100Ω -0805 1-16-DB G R4 5 10K-0805 560Ω -0805 VC C 1-49-R ST R4 3 R4 6 560Ω...
  • Page 51 ircuit Diagra CN1 1 IC10 JS-2004B-10K/2008-10A 2-37-DD R3 1 891P-1A-C/PCF N-112D1 M /PCF N-112D2 M /G4A-1A-P/JQX-102F/P//HF161F (AC2 20V-20A- ) 2-36-DC R3 2 2-35-DB CN1 8 N5 00 R3 7 2-34-DA R1 12 R5 00 M M SD4 148T1 G 2-32-UD +12V +12V 4.

  • Page 52: Removal Procedure

    Removal Procedure 12. Removal Procedure Removal of front panel Indoor unit Step Procedure Points 1.Features 2.Remove the front panel Hold the front panel by the tabs on the both sides and lift it Domestic air conditioner...
  • Page 53 Removal Procedure Step Procedure Points Loosen the screw and lift Loosen the screw up the casing cover Loosen the screw and lift up the control box cover Loosen the screw Domestic air conditioner...
  • Page 54 Removal Procedure Remove the air filters and horizontal flap Step Procedure Points Pull the Harness 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 Lift an air filter upwards slightly and then pull it out downwards...
  • Page 55 Removal Procedure Remove the casing Step Procedure Points Release the screw covers(3EA) Loosen the marked Screw (7EA) Domestic air conditioner...
  • Page 56 Removal Procedure Step Procedure Points Holes （4EA） ■When assembling, install the front Release the marked grille horizontally hooks (4EA) 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 57 Removal Procedure Release stepping motor and control box Step Procedure Points Hooks (3EA) Release the top cover of the control box hooks then remove it. Pull the Harness out Loosen screws (2EA) of the PCB unit and then Loosen control Harness: Box screws (2EA) .
  • Page 58 Removal Procedure Release stepping motor and control box Step Procedure Points Loosen the stepping motor screws (2EA), and then Release the stepping motor Domestic air conditioner...
  • Page 59 Removal Procedure Removal of Heat Exchanger Step Procedure Points Loosen the marked screws(2EA) Loosen the Screws (2EA) Pull mounting plate and heat exchanger bracket from Hook of the base frame then release them. Domestic air conditioner...
  • Page 60 Removal Procedure Step Procedure Points Release the fixture plate from the base frame hook and remove it. Domestic air conditioner...
  • Page 61 Removal Procedure Step Procedure Points Loosen the marked screws (7EA). And then Remove the heat exchanger Remove Fan Motor Loosen the marked screws(4EA) and release the cover of fan motor Domestic air conditioner...
  • Page 62 Removal Procedure Step Procedure Points Loosen the marked screw (2EA) of fan motor up bracket and remove it Screw of fan rotor Screw of Fan Motor up bracket Loosen the marked screw (1EA) of fan motor and remove fan motor ove it Fan motor bracket(UP) Fan motor assy...
  • Page 63 Removal Procedure Step Procedure Points Lift up the right part of the fan and remove it Remove horizontal louver and fan motor bracket Every blade go round and round, then move Domestic air conditioner...
  • Page 64 Removal Procedure Remove fan motor bracket and fan bearing Step Procedure Points Pull the hook of fan motor bracket and upward remove it Pull the hook of bearing bracket and upward remove it Domestic air conditioner...
  • Page 65 Removal Procedure Remove frame work board Step Procedure Points Loosen the marked screw of frame work board Screw of frame work board Pull the hook of frame work board, remove it Domestic air conditioner...
  • Page 66 Removal Procedure Remove drain pipe and drain pipe stem Step Procedure Points Loosen the marked screw of drain pipe and then remove it Pull the drain pipe stem from base frame and the remove it Domestic air conditioner...
  • Page 67 Generalny Dystrybutor Systemów Klimatyzacji i Pomp Ciepła w Polsce: REFSYSTEM Sp. z o. o. ul. Metalowców 5 86-300 Grudziądz +48 723 737 378 www.haier-ac.pl Producent: Qingdao Haier Air Conditioner Electric Co., Ltd. Haier lndustrial Park, Qianwangang Road, Eco-Tech Development Zone, Qingdao 266555, Shandong, R.P.C. +86 532 88936943 www.haier.com Haier zastrzega sobie prawo do wprowadzania zmian bez wcześniejszego powiadomienia.

Table of Contents