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Heiko JS070-C2 Service Manual

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SERVICE MANUAL
●
Wall Mounted Type
●
JS070-C2
Model No.
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
All right
s reserved. Unauthorized copying and distribution is a violation of law
●
Version ：V1
Date：2020-11-19

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  • Page 1 SERVICE MANUAL ● Wall Mounted Type ● JS070-C2 Model No. 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.

  • Page 2: Table Of Contents

    Table fo 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 ................ 13 8.Dimensional drawings ................ 25 9.Center of gravity .................

  • Page 3: Introduction

    Introduction 1.Introduction 1.1 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 4 Introduction 1.2.1 Embedded wire checking before installation Check the embedded wire diameter suitable to request: (Power supply from indoor: 2.5kw ≥1.0mm 3.5kw,5kw ≥1.5mm 7kw ≥1.0mm ; Power supply from outdoor ≥1.0mm Check the embedded wire are four roots, L/N/COM/GND; GND is needed, if not, thunder or high voltage wave from power grid will impact to the performance Using a multi-meter to test short circuit of the four roots wires, make sure no short circuit happen.
  • Page 5 Introduction 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 ●...
  • Page 6 Introduction 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. ● If the installation site does not have sufficient strength and if the installation work is not conducted securely, the equipment can fall and cause injury.
  • Page 7 Introduction When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent children from swallowing it. If a child swallows the coin battery, see a doctor immediately. Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks.
  • Page 8 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. ●...

  • Page 9: Features

    Features 2.Features Easy Support Clip: It is more convenient for installation by extending space with additional support clip, meanwhile, saving time. Self Clean: With a new-generation hydrophilic foil, when the air conditioner in cooling or drying mode, the dust on evaporator will be taken away by condensed water flowing rapidly. A-PAM DC inverter : A-PAM inverter technology is the upgrade of 180°sine wave inverter, it adopts ●...

  • Page 10: Specifications

    Specifications 3.Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE Phase Frequency Voltage ● NOMINAL CAPACITY and NOMINAL INPUT Cooling heating Capacity rated Btu/h 23880 27640 ● Power Consumption(Rated) 2.16 2.18 SEER/SCOP 7.1/A++ 4.0/A+ Annual energy consumption 1963 2.8*10 ﹣³ Moisture Removal m³/h TECHNICAL SPECIFICATIONS Dimensions H*W*D 1125×240×335...

  • Page 11: Sensors List

    Specifications TECHNICAL SPECIFICATIONS-PARTS cooling heating Type Cross flow fan Motor output Air flow rate(high) m³/h 1200 1200 Speed(super/high/low) 1250/1100/800 1150/1000/700 Type ML fin-φ 7HI-HX tube Heat exchanger Segment *stage*fitch 3*18*1.4 Air direction control Right,Left,Horizontal,Downward ● Air filter Removable/Washable/Mildew Proof Microcomputer Control Temperature control Remote controller model 0010401715Y...

  • Page 12: Pinping Diagrams

    Piping diagrams 5 Piping diagrams Electric Expansion Valve Electric Expansion Valve Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Note: Other designations PCB(1) (Indoor Control PCB) 1) CN14 Connector for Forced operation ON / OFF switch 2) FUSE1 Fuse 3.15A/250VAC N_RC UNIT MODEL PCB MODEL ● JS070-C2 0011800646D(26) DISPLEY SERIES 325/498 UNIT MODEL DISPLAY MODEL JS070-C2 0011800387D Domestic air conditioner...
  • Page 14 Printed circuit board connector wiring diagram CN51 CN34 CN5 ’ CN11 CN14 ● CN23 ’ CN44 CN21 ’ CN47 CN27 CN43 CN17 ● Domestic air conditioner...

  • Page 15: Funcitions And Control

    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.
  • Page 16 Functions and control 7.1.3 Dehumidifying mode. * temperature control range: 16---30℃ * temperature difference: 1℃ Control feature: send the dehumidifying signal to the outdoor system. ● ℃, the compressor will be turned on, the indoor fan will operate at the set speed. When Tr>Ts+2 ●...
  • Page 17 Functions and control * Coil protection (synchronic overheating protection) are installed for the four directions latch 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: 1℃...
  • Page 18 Functions and control * Automatic heating temperature compensation: when the system enters the heating mode, the temperature compensation (4℃) will be added. When the status is switched off, the compensation will be erased. 7.1.5 trength operation ● The system enters the mode after receiving the ‘strength signal’. ●...
  • Page 19 Functions and control 3 .system /on and off timing: The settings will be completed according to the orders.. 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 ●...
  • Page 20 Functions and control The test operation can be stopped by the relative commands from the remote 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℃...
  • Page 21 Functions and control Under the operation, the normal temperature ranges from 120 degree to -30 degree. When the temperature goes beyond this range, the abnormality can be confirmed. If the temperature goes back into the range, the system will automatically resume. 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.
  • Page 22 Functions and control The CPU of the main control will be 60 times faster. 7.2 Value of thermistor Room sensor and Pipe Sensor Room sensor R25℃=23KΩ±2% B25℃/50℃=4200K±1% R25℃=23KΩ+2% Temp.(℃) Resistor（KΩ） Temp.（℃） Resistor（KΩ） Temp.（℃） Resistor（KΩ） 266.905 32.215 250.866 30.671 5.87 235.895 29.21 5.65 221.911...
  • Page 23 Functions and control 48.314 8.39 45.872 8.05 43.569 7.73 41.395 7.43 39.343 7.14 37.406 6.86 35.577 33.848 6.34 R25℃=10KΩ±2% B25℃/50℃=3700K±2% Temp.((℃)) Tolerance(℃) Max.(KΩ) Normal(KΩ) Min.(KΩ) 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 24 Functions and control 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 -1.29 1.24 27.8708 26.2858 24.7686 -1.27 1.22 26.5605 25.0851 23.6704 -1.25 1.20 25.3193 23.9462 22.6273 -1.23 1.18 24.1432 22.8656 21.6361 -1.20 1.16 23.0284 21.8398 20.6939 -1.18 1.14...
  • Page 25 Functions and control 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 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47 4.5083 4.2666 4.0342 -1.57 1.51 4.3524 4.1145 3.8862 -1.61 1.55 4.2026 3.9686 3.7443 -1.65 1.59 4.0588 3.8287 3.6084 -1.70 1.62...
  • Page 26 Functions and control 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 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33 1.0910 0.9882 0.8942 -3.69 3.37 1.0607 0.9599 0.8679 -3.74 3.42...

  • Page 27: Dimensional Drawings

    Service diagnosis 8.Dimensional unit:mm 1125 9.Center of gravity unit:mm 1125 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.
  • Page 29 Service diagnosis 10.3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Only For 498 and Outdoor Reference fault description 498A display (LED1 flash Page Other display (Red/Green Time times) Run □On★Flash■ Off) Indoor and Communication fault between Page.37 ■...
  • Page 30 Service diagnosis 10.3.1 Thermistor or Related Abnormality ★ ■ ■/ E1: Room temperature sensor failure Indoor Display ★ □ □/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 31 Service diagnosis ★ □ ★/E4: Indoor EEPROM error Indoor Display ■ ★ ■/F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Indoor display 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 32 Service diagnosis 10.3.3 Indoor DC fan motor malfunction ■ □ ★/E14 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...
  • Page 33 Service diagnosis ■ DC fan motor protection dues to faulty PCB Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Domestic air conditioner...
  • Page 34 Service diagnosis 10.3.5 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 Decision ■...
  • Page 35 Service diagnosis 10.3.6 Over-current of the compressor Outdoor Display: ■ ★ □/F2 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 Decision or the compressor is damaged.
  • Page 36 Service diagnosis 10.3.7 The communication fault between IPM and outdoor PCB Outdoor display: ■ ★ ■/F3 LED1 flash 4 times Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction ■ The outdoor PCB broken leads to communication fault Decision ■...
  • Page 37 Service diagnosis 10.3.8 Power Supply Over or under voltage fault Outdoor display: ■ ★ □ /F19 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...
  • Page 38 Service diagnosis 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: ■ ★ ■ /F4 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℃...
  • Page 39 Service diagnosis 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 outdo or PCB. ● Malfunction Detection Malfunction ■...
  • Page 40 Service diagnosis 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 Service diagnosis 10.3.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor Display ■★■/F11 LED1 flash 18 times ● ■★■/F28 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;...
  • Page 42 Service diagnosis 10.3.12 High work-intense protection Outdoor display ★★★/E9 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 43: Wiring Diagrams

    Printed circuit board connector wiring diagram 11. Wiring diagrams 11.1 INDOOR UNIT 0010561514 INDOOR UNIT DIAGRAM DC FAN MOTOR GENERATOR C0N3 C0N2 C0N1 FRESH AIR W IRED CONTROLLER CN21 CN5' UP-DOWN STEPMOTOR CN11 CN11' CN52 LEFT STEPMOTOR CN23 CN51 ROOM CARD CN34 WIFI 1 2 3 4...
  • Page 44 Circuit diagrams 11.2 Circuit Diagrams 100-1206 +15V D206 R011 100-1206 15V-100mA 10Ω -2512 ZD003 R202 FR106(1A- 600V-500ns) R203 1N4742A(12V- 1W) ZD001 C013 C014 R206 270-2W R004 4.7nF/250V 4.7nF/250V 1N5399(1500m A/1000V) N001 100nF 2.2K +310V KTC8050 NTC1 +310V R205 220-L SCK084R72 102/1000V C009 R019...
  • Page 45 Circuit diagrams...
  • Page 47 REMOVAL PROCEDURE Wall Mounted Type DC Inverter SERIES:JS070-C2 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.
  • Page 48 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 49 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 50 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 51 Removal Procedure Remove the casing Step Procedure Points Release the screw covers(3EA) Loosen the marked Screw (7EA) Domestic air conditioner...
  • Page 52 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. ■When assembling, Horizontally and remove it make sure the four hooks are caught properly.
  • Page 53 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. Loosen screws (2EA) Pull the Harness out of the PCB unit and then Loosen control Harness: Box screws (2EA) .
  • Page 54 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 55 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 56 Removal Procedure Step Procedure Points Release the fixture plate from the base frame hook and remove it. Domestic air conditioner...
  • Page 57 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 58 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 59 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 60 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 61 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 62 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...

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