Heiko 2P Series Service Manual
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Heiko 2P Series Service Manual

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SERVICE MANUAL
●
Wall Mounted Type
NEW 2P-Series
Model No.
JZ070-C1
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general publi
c.
●
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
●
Version ：V1
Date：2020-02-19

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  • Page 1 SERVICE MANUAL ● Wall Mounted Type NEW 2P-Series Model No. JZ070-C1 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general publi ● 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.

  • Page 2: Table Of Contents

    Contents Contents 1.Introduction ..................... 1 2.Specifications ..................7 3.Sensors list ..................... 8 ● 4.Pinping diagrams ..................9 ● 5.Operation range ..................10 6.Printed Circuit Board Connector Wiring Diagram ......... 11 7.Outdoor Functions and Control ............. 14 8.Dimensional drawings ................28 ●...

  • 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 If the refrigerant gas discharges during the repair work, do not touch the discharging refrigerant gas .The refrigerant gas can cause frostbite. 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 cooling machine oil discharges ●...
  • Page 6 Introduction 1.2.3 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to ● 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.
  • Page 7 Introduction 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. 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 ●...
  • 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. If the installation platform or frame has corroded, replace it.

  • Page 9: Specifications

    Specification 2.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-UNIT Dimensions H*W*D...

  • Page 10: Sensors List

    Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type Refrigerant charge Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference ● Refrigerant control ● liquid Φ6.35 Piping connections Φ12.7 (external diameter) drain Φ16 ● Heat insulation type Both liquid and Gas pipes Max.

  • Page 11: Pinping Diagrams

    Pinping diagrams 4 Piping diagrams Domestic air conditioner...

  • Page 12: Operation Range

    Operation range 5.Operation range Domestic air conditioner...

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Printed circuit board connector wiring diagram 6. Printed circuit board connector wiring diagram Connectors PCB (1) (Control PCB) 1) CN1, CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN22 Connector for DC POWER 15V and 5V to the module board 4) CN8, CN9 Connector for CN2,CN1 on the module board 5) CN21 Connector for fan motor 6) CN10 Connector for four way valve coil...
  • Page 14 Printed circuit board connector wiring diagram PCB (1) CN26 CN24 CN23 CN22 CN16 CN20 CN22 ● Domestic air conditioner...
  • Page 15 Printed circuit board connector wiring diagram PCB(2) CN10 CN11 Domestic air conditioner...

  • Page 16: Outdoor Functions And Control

    Functions and control 7. Functions and control 7.1 Main functions and control specification 7.1.1 The operation frequency of outdoor unit and its control 7.1.1.1 The operation frequency control of compressor The operation frequency scope of compressor： Mode Minimum operation frequency Maximum operation frequency Heating 15Hz...
  • Page 17 Functions and control Wh_c<-2 Max_hz3 91 HZ Wh_c<5 Max_hz4 91 HZ Wh_c<10 Max_hz5 83 HZ Wh_c<17 Max_hz6 83 HZ Wh_c<20 Max_hz7 61 HZ Wh_c>＝20 Max_hz8 51 HZ Remarks: The above are the maximum frequency limitations of the complete appliance which are affected by the environment, and they have nothing to do with the ability of the indoor unit.
  • Page 18 Functions and control When refrigerating, it is needed to satisfy F-MIN-d(compressor’s Min_hz)< F<F-MAX-d(compressor’s Max_hz) When heating, it is needed to satisfy F-MIN-r (compressor’s Min_hz)< F<F-MAX-r (compressor’s Max_hz) PID control : The innital frequency Sn is determined by Pn . We can calculate Hzoutf according to the value of Kp ,Ki ,Kd, Out_gain,Pn.Then , Fn = Sn + Hzoutf.
  • Page 19 Functions and control If |SH|≥3,and △SH=0, 10s/ 1 step. If 3≥|SH|≥0, 30s/ 1 step. △SH= current SH- last SH SH= Ts (suction temp)-Tc1 (indoor coil temp)-Tsh (fixed data, depend on different models, -1~2) 7.1.4 Four way control For the details of defrosting four-way valve control, see the defrosting process. Four way working in other ways: Under the mode of heating, open the four-way valve, when the compressor is not started or changed to non-heating mode, make sure the compressor is stoped for 2 minutes, and then close the...
  • Page 20 Functions and control TC(℃) The compressor stops Fgh_t1 63℃ Fgh_t1－2 Fgh_t2－2 N Decreasing the frequency rapidly Fgh_t2 59℃ P Decreasing the frequency slowly Fgh_t3 56℃ Fgh_t3－2 Fgh_t4—2 Q Prohibiting increasing the frequency Fgh_t4 53℃ R Increasing slowly Fgh_t5 40℃ Fgh_t5—2 Normal N：Decreasing at the speed of 1HZ/1 second P：Decreasing at the speed of 1Hz/10 seconds...
  • Page 21 Functions and control (1) When the outdoor environment temperature is higher than 40℃, AC current protection value decreases by 1A. (2) When the outdoor environment temperature is higher than 50℃, AC current protection value decreases by 2A. 7.1.5.5 Anti-freezing protection of the indoor heat exchanger When refrigerating/heating, prevent freezing.
  • Page 22 Functions and control decreases to the lowest frequency. When the temperatures are lower than 68℃ and higher than 62℃, keep the frequency of the compressor. When the temperatures are lower than 62℃, relieve the defrosting temperature protection. 7.2 Value of Thermistor Ambient Sensor, Defrosting Sensor, Pipe sensor R25℃=10KΩ±3% B25℃/50℃=3700K±3% Temp.(℃)
  • Page 23 Functions and control 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 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...
  • Page 24 Functions and control 4.2026 3.9686 3.7443 -1.65 1.59 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...
  • Page 25 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 26 Functions and control 7423.3626 6235.7109 5233.3554 -2.83 2.39 6953.2930 5851.9864 4920.6791 -2.82 2.38 6515.8375 5494.2064 4628.5894 -2.80 2.37 6108.5393 5160.4621 4355.6078 -2.79 2.37 5729.1413 4848.9963 4100.3708 -2.77 2.36 5375.5683 4558.1906 3861.6201 -2.76 2.35 5045.9114 4286.5535 3638.1938 -2.75 2.34 4738.4141 4032.7098 3429.0191 -2.73 2.34...
  • Page 27 Functions and control 593.5446 536.6540 484.7796 -2.10 1.92 564.4275 511.0760 462.3510 -2.09 1.90 536.9865 486.9352 441.1516 -2.07 1.89 511.0105 464.0500 421.0258 -2.05 1.87 486.4151 442.3499 401.9146 -2.03 1.86 463.1208 421.7683 383.7626 -2.01 1.84 441.0535 402.2430 366.5175 -1.99 1.83 ● 420.1431 383.7151 350.1301 -1.97...
  • Page 28 Functions and control 82.1303 78.6615 75.2715 -1.13 1.10 78.9116 75.6668 72.4902 -1.10 1.08 75.8343 72.8004 69.8249 -1.08 1.06 72.8916 70.0561 67.2703 -1.05 1.03 70.0770 67.4283 64.8213 -1.03 1.01 67.3844 64.9115 62.4731 -1.00 0.99 64.8080 62.5006 60.2211 -0.98 0.96 ● 62.3423 60.1906 58.0609 -0.95...
  • Page 29 Functions and control 17.9590 16.8769 15.8458 -2.06 1.96 17.4214 16.3564 15.3427 -2.10 2.00 16.9023 15.8542 14.8577 -2.15 2.04 16.4010 15.3696 14.3902 -2.19 2.08 15.9167 14.9020 13.9394 -2.23 2.12 15.4489 14.4506 13.5047 -2.27 2.16 14.9968 14.0149 13.0855 -2.32 2.19 ● 14.5599 13.5942 12.6811 -2.36...

  • Page 30: Dimensional Drawings

    Dimensional drawing 8.Dimensional drawings 9.Center of gravity ● Domestic air conditioner...

  • Page 31: 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 indo or or outdoor unit is activated or when the thermistor malfunctions, disabling ●...
  • Page 32 Service diagnosis 10.3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Outdoor Reference fault description (LED1 Only For 498 and Page flash Other 498A display times) display (Red/Green Time Run □On ★Flash ■Off ,) Indoor and Communication fault ■...
  • Page 33 Service diagnosis Loop the station ■ ★ ■ Page .44 detect error Overcurrent ■ ★ □ Page .37 compressor Overcurrent protection for ■ ★ □ single-phase Page .43 compressor Domestic air conditioner...
  • Page 34 Service diagnosis 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 35 Service diagnosis 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 36 Service diagnosis 10.3.3 Indoor AC 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...
  • Page 37 Service diagnosis 10.3.4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Malfunction Detection Malfunction when the data of EEPROM is error or the EEPROM is damaged Decision Conditions ■...
  • Page 38 Service diagnosis Domestic air conditioner...
  • Page 39 Service diagnosis 10.3.5 IPM protection Outdoor display: 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 40 Service diagnosis 10.3.6 Over-current of the compressor Outdoor Display: 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. Conditions power supply voltage is too low or too high Supposed...
  • Page 41 Service diagnosis 10.3.7 The communication fault between IPM and outdoor PCB Outdoor display: 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 ●...
  • Page 42 Service diagnosis 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...
  • Page 43 Service diagnosis 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 44 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 outdoor PCB. Malfunction Detection Malfunction ■ The outdoor PCB broken leads to communication fault ●...
  • Page 45 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 46 Service diagnosis 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; ●...
  • Page 47 Service diagnosis 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 ther mistor exceeds the limit. ● Detection Malfunction Activated when the temperature being sensed by the heat exchanger ●...

  • Page 48: Performance And Cerves Diagrams

    Sound level 11.Performence and cerves diagrams 11.1 Cooling capacity-temperature curves cooling va lue -temerature table ● indoor temp. outdoor temp. DB/WB 10 ℃ 15 ℃ 20 ℃ 25 ℃ 30 ℃ 35 ℃ 38 ℃ 40 ℃ 43 ℃ 21/15℃ 5297 5135 5101...
  • Page 49 Sound level 11.2 Cooling power consumption value- temperature curves power consumption value-temp.table indoor temp. outdoor temp. DB/WB ℃ 15 ℃ 20 ℃ 25 ℃ 30 ℃ 35 ℃ 38 ℃ 40 ℃ 43 ℃ ● 21/15℃ 1709 1657 1646 1019 1416 1819 2227...
  • Page 50 Sound level 11.3 Cooling discharge pressure curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 ℃ 27/19℃ 35/24℃ ● 10 ℃ 1882 1973 2071 15 ℃ 1931 1999 2092 20 ℃ 1931 2025 2099 25 ℃ 2033 2104 2195 30 ℃...
  • Page 51 Sound level 11. 4 Cooling suction pressure curves cooling suction pressure.table outdoor temp. indoor temp. (humidity 46%) ● DB/WB 21/15℃ 27/19℃ 35/24℃ 10 ℃ 1004 15 ℃ 1014 20 ℃ 1024 25 ℃ 1045 30 ℃ 1056 35 ℃ 1111 ●...
  • Page 52 Sound level 11.5 Heating capacity-temperature curves heating capacity and indoor/outdoor temp.table ● outdoor temp. indoor temp.(humidity 46%) DB/WB 10 ℃ 20 ℃ 27 ℃ -15 ℃ 4607 4293 4095 ● -10 ℃ 7081 6474 5972 -7/-8℃ 8702 7890 7332 2/1℃ 9303 8210 7445...
  • Page 53 Sound level 11.6 Heating power consumption value- temperature curves power consumption value -temp.table ● outdoor temp. indoor temp.(humidity 46%) DB/WB ℃ ℃ ℃ ℃ 1999 2104 2230 ● ℃ 2393 2493 2618 ℃ -7/-8 2499 2658 2791 ℃ 2595 2732 2868 ℃...
  • Page 54 Sound level 11. 7 Heating discharge pressure curves heating discharge pressure.table ● outdoor temp indoor temp. DB/WB 10 ℃ 20 ℃ 27 ℃ -15 ℃ 2562 2710 2844 ● -10 ℃ 2743 2922 3082 -7/-8℃ 3183 3344 3430 2/1℃ 332 7 3626 3721 ℃...
  • Page 55 Sound level 11.8 Heating suction pressure curves heating suction pressure.table ● outdoor temp indoor temp. DB/WB 10 ℃ 20 ℃ 27 ℃ -15 ℃ ● -10 ℃ -7/-8℃ 2/1℃ ℃ ● 12/11℃ 18/16℃ 1014 1053 1073 24/20℃ 1200 1239 1259 heating suction pressure and temp.

  • Page 56: Sound Level

    Sound level 12.Sound level Sound pressure level 230V,50HZ Sound power level Model Measuring location (cooling/heating) Cooling/heating microphone ● JZ070-C1 ● Domestic air conditioner...
  • Page 57 Wiring diagrams 13 Wiring Diagrams 13.1 Outdoor unit ● Wiring diagrams INDOOR UNIT 0010534175 OUTDOOR UNIT WIRING DIAGRAM COMPRESSOR CN28 BR(OR B) R(U) C(W) AC-L S(V) CN25 BL(OR W) AC-N FUSE1 T25A 250VAC CN24 CN36 CN11 MODULE COM OUTDOOR PCB COMB COMA CN6 CN7...

  • Page 58: Circuit Diagrams

    Circuit diagrams 13.2 Outdoor unit control board circuit diagrams Domestic air conditioner...
  • Page 59 Circuit diagrams 12.3 Module board circuit diagram Domestic air conditioner...
  • Page 60 Sincere F orever ●...

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