Heiko T Series Service Manual
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Heiko T Series Service Manual

Wall mounted type
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SERVICE MANUAL
Wall Mounted Type
T-Series
Model No.
JZ025-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 se rvice 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：2020-1-18

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  • Page 1 SERVICE MANUAL Wall Mounted Type T-Series Model No. JZ025-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.

  • 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 ......12 7.Outdoor Functions and Control ........8.Dimensional drawings ................25 10.Service Diagnosis .............

  • 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 Caution in Repair Warning Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair. Working on the equipment that is connected to a power supply can cause an electrical shook. If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits, do not touch any electrically charged sections of the equipment.
  • Page 5 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 Introduction 1.2.3 Inspection after Repair Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet all the way. If the plug has dust or loose connection, it can cause an electrical shock or fire. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 8 Introduction 1.2.5 Using Icons List Icon Type of Information Description A “note” provides information that is not indispensable, but may Note Note nevertheless be valuable to the reader, such as tips and tricks. A “caution” is used when there is danger that the reader, through incorrect manipulation, may damage equipment, loose data, get Caution Caution...

  • Page 9: Specifications

    Specification 2.Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE Phase Frequency Voltage NOMINAL CAPACITY and NOMINAL INPUT Cooling heating 2.60 2.80 Capacity rated Btu/h 8870 9555 Power Consumption(Rated) 0.75 SEER/SCOP 6.1/A++ 4.0A+ Annual energy consumption Moisture Removal m³/h 1.2*10 ﹣³ TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D 700×245×544 Packaged...

  • Page 10: Sensors List

    Specification Refrigerant type Refrigerant charge 0.46 Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference CAPILLARY Refrigerant control Φ6.35 liquid Piping connections Φ9.52 (external diameter) Φ16 drain Heat insulation type Both liquid and Gas pipes Max. piping Length Max.

  • Page 11: Pinping Diagrams

    Pinping diagrams 4.Pinping diagrams Domestic air conditioner...

  • Page 12: Operation Range

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

  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Functions and control 6. Printed circuit board connector wiring diagram Connectors 1) CN50 Connector for N/ L/COM/PE 2) CN52 Connector for the U, V, W wire of the compressor 3) CN51 (LI /LO ) Connector for reactor 4) CN21 Connector for fan motor 5) CN10 Connector for four way valve coil 6) CN20 Connector for Temperature sensor Notes: Other Designations...

  • Page 14: 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 27Hz...
  • Page 15 Functions and control Wh_c≤-5 Max_hz3 99HZ Wh_c≤0 Max_hz4 99HZ Wh_c≤5 Max_hz5 99HZ Wh_c≤10 Max_hz6 82HZ Wh_c≤16 Max_hz7 70HZ Wh_c≤22 Max_hz8 61HZ Wh_c>22 Max_hz9 47HZ 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. Refrigeration/dehumidification mode: Serial No.
  • Page 16 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 17 Functions and control compressor is started (during the course of self-detection, there’s no such limitation) Sensor detection methods: 100 times (one cycle of procedure run is one time, and about 5ms, detection method for each time: continuously sampling for 8 times, then order them and take the mean value of the middle 2 values), take the mean value.
  • Page 18 Functions and control ●During the starting process of the compressor, if the AC current is greater than 9A, the frequency of the compressor decreases at the speed of 1HZ/second. ●During the starting process of the compressor, if the AC current is greater than 8A, the frequency of the compressor decreases at the speed of 1HZ/10second.
  • Page 19 Functions and control of the compressor doesn’t change. When ice_temp_3〈Tpg_indoor〈ice_temp_4℃, the frequency of the compressor increases at the speed of 1HZ/10seconds. For example, Tpg_indoor≤2℃，last for 2 minutes, and then the outdoor unit will stop, and report underload malfunction, but don’t send malfunction report to the indoor. The compressor stops for more than 3 minutes, Tpg_indoor>...
  • Page 20 Functions and control 39.3792 36.7676 34.2983 -1.43 1.35 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31 33.8936 31.7844 29.7796 -1.36 1.29 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...
  • Page 21 Functions and control 5.7997 5.5316 5.2712 -1.29 1.25 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 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...
  • Page 22 Functions and control 1.3730 1.2525 1.1415 -3.27 3.01 1.3335 1.2153 1.1066 -3.32 3.06 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...
  • Page 23 Functions and control Discharging Sensor R80℃=50KΩ±3% B25/80℃=4450K±3% Max.(KΩ) Normal(KΩ) Min.(KΩ) Temp.((℃)) Tolerance(℃) 14646.0505 12061.7438 9924.4999 -2.96 2.45 13654.1707 11267.8730 9290.2526 -2.95 2.44 12735.8378 10531.3695 8700.6388 -2.93 2.44 11885.1336 9847.7240 8152.2338 -2.92 2.43 11096.6531 9212.8101 7641.8972 -2.91 2.42 10365.4565 8622.8491 7166.7474 -2.90 2.42 9687.0270...
  • Page 24 Functions and control 1236.4792 1094.3200 967.6334 -2.36 2.11 1171.0715 1038.0743 919.3533 -2.35 2.09 1109.4661 985.0146 873.7359 -2.33 2.08 1051.4226 934.9440 830.6210 -2.31 2.07 996.7169 887.6792 789.8583 -2.29 2.06 945.1404 843.0486 751.3077 -2.27 2.04 896.4981 800.8922 714.8380 -2.26 2.03 850.6086 761.0603 680.3265 -2.24 2.02...
  • Page 25 Functions and control 146.9136 138.3454 130.1598 -1.47 1.40 140.7403 132.6980 125.0027 -1.44 1.38 134.8559 127.3081 120.0746 -1.42 1.36 129.2457 122.1630 115.3645 -1.40 1.34 123.8956 117.2504 110.8618 -1.37 1.32 118.7926 112.5589 106.5564 -1.35 1.30 113.9241 108.0776 102.4388 -1.32 1.28 109.2784 103.7961 98.5000 -1.30 1.26...
  • Page 26 Functions and control 27.9078 26.5864 25.3048 -1.49 1.44 27.0160 25.7110 24.4470 -1.53 1.48 26.1569 24.8685 23.6222 -1.57 1.52 25.3290 24.0574 22.8291 -1.61 1.55 24.5311 23.2765 22.0662 -1.65 1.59 23.7620 22.5245 21.3323 -1.69 1.63 23.0205 21.8002 20.6261 -1.73 1.66 22.3055 21.1025 19.9465 -1.77 1.70...

  • Page 27: Dimensional Drawings

    Dimensional drawing 8.Dimensional drawings 9.Center of gravity 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.
  • Page 29 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 between ■...
  • 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 10.3.2 EEPROM abnormal ★ □ ★/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...
  • 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 when the detected rotation feedback signal don’t received in 2 minutes Malfunction Decision Conditions...
  • Page 33 Service diagnosis ■ DC fan motor protection dues to the DC fan motor faulty Supposed ■ 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. Check whether Terminal on the outdoor mainboard is well inserted.
  • 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 ■ The system leads to IPM protection due to over current Malfunction ■...
  • 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℃ Decision Conditions Supposed...
  • Page 39 Service diagnosis 10.3.10 The communication fault between indoor and outdoor ■ ■ ★ /E7 Indoor display outdoor display 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 ■...
  • 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: Performence And Cerves Diagrams

    Sound level 11.Performence and cerves diagrams 11.1 Cooling capacity-temperature curves performance curves cooling value-temerature table indoor temp. outdoor temp. DB/WB 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 38℃ 40℃ 43℃ 21/15℃ 1968 1954 1916 1769 2226 2437 2345 2305 2110 24/16℃ 2069 2013 2011...
  • Page 44 Sound level 11.2 Cooling power consumption value- temperature curves performance curves power consumption value-temp.table indoor temp. outdoor temp. DB/WB 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 38℃ 40℃ 43℃ 21/15℃ 24/16℃ 1033 27/19℃ 1031 1148 30/22℃ 1087 1161 32/23℃ 1141 1212 35/24℃...
  • Page 45 Sound level 11.3 Cooling discharge pressure curves performance curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15℃ 27/19℃ 35/24℃ 10℃ 1863 1973 2075 15℃ 1900 1999 2106 20℃ 1930 2025 2104 25℃ 2031 2104 2225 30℃ 2218 2341 2464 35℃...
  • Page 46 Sound level 11.4 Cooling suction pressure curves performance curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15℃ 27/19℃ 35/24℃ 10℃ 1864 1973 2061 15℃ 1950 1999 2096 20℃ 1965 2025 2097 25℃ 2052 2104 2227 30℃ 2230 2341 2431 35℃...
  • Page 47 Sound level 11.5 Heating capacity-temperature curves performance curves heating capacity and indoor/outdoor temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 10℃ 20℃ 27℃ -15℃ 1593 1484 1416 -10℃ 2448 2238 2064 -7/-8℃ 3008 2727 2535 2/1℃ 3216 2838 2574 7/6℃ 3130 2890 2572 12/11℃...
  • Page 48 Sound level 11.6 Heating power consumption value- temperature curves performance curves power consumption value-temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB ℃ ℃ ℃ ℃ ℃ -7/-8 ℃ ℃ ℃ 12/11 ℃ 18/16 ℃ 24/20 ℃ power consumption and temp 1200 1000 ℃...
  • Page 49 Sound level 11.7 Heating discharge pressure curves performance curves heating discharge pressure.table outdoor temp indoor temp. DB/WB 10℃ 20℃ 27℃ -15℃ 2580 2710 2784 -10℃ 2731 2922 3077 -7/-8℃ 3152 3344 3451 2/1℃ 3391 3626 3724 7/6℃ 3291 3520 3688 12/11℃...

  • Page 50: Sound Level

    Sound level 11.8 Heating suction pressure curves performance curves heating suction pressure.table outdoor temp indoor temp. DB/WB 10℃ 20℃ 27℃ -15℃ -10℃ -7/-8℃ 2/1℃ 7/6℃ 12/11℃ 18/16℃ 1014 1053 1073 24/20℃ 1200 1239 1259 heating suction pressure and temp. curves 1400 1300 1200...
  • Page 51 Sound level 12.Sound level Sound pressure level 230V,50HZ Sound power level Model Measuring location (cooling/heating) Cooling/heating microphone JZ025-C1 Domestic air conditioner...
  • Page 52 Wiring diagrams 13 Wiring Diagrams 13.1 Outdoor unit Domestic air conditioner...

  • Page 53: Circuit Diagrams

    Circuit diagrams 13.2 Outdoor unit control board circuit diagrams Domestic air conditioner...
  • Page 54 Circuit diagrams Domestic air conditioner...
  • Page 55 Sincere Forever...
  • Page 56 Wall Mounted Type DC Inverter FREE MATCH NEW 1P-Series SERIES: JZ025-C1...
  • Page 57 Remove of front panel Outdoor unit Step Procedure Points 1.Features Loosen the service Be careful not to cover screw and cut your finger by remove the service the fins of the cover. heat exchanger Step Procedure Step Procedure Points Step Procedure Points Points 2.
  • Page 58 Loosen the screws of the panel. Pull and remove the front panel. Step Procedure Points Remove the fixting screws, then lift the electrical box Domestic air conditioner...
  • Page 59 Remove side panel Step Procedure Points ■ Loosen the fixting screws and remove the side panel. Remove the casing Step Procedure Points Loosen the fixting screws and remove the side panel. ■ Domestic air conditioner...
  • Page 60 Step Procedure Points Loosen the fixting screws remove the fan Domestic air conditioner...
  • Page 61 Loosen the fixting screws and lift the fan motor. Release stepping motor (2type) Step Procedure Points Remove fixing screws,then lift the fan motor bracket Domestic air conditioner...
  • Page 62 Cut down and pull out compressor and remove Removal of Heat Exchanger Step Procedure Points Domestic air conditioner...
  • Page 63 Loosen the marked fixing screws Loosen the fixting hook remove heat exchanger Domestic air conditioner...
  • Page 64 Step Procedure Points Remove fixing screws,then lift valves Step Procedure Points Domestic air conditioner...
  • Page 65 Remove the fixing screw,then lift the valve set Domestic air conditioner...

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