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SERVICE MANUAL
Model JZ025-A1
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
Version V1
Date 20201204
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Table of Contents
Related Manuals for Heiko JZ025-A1
Summary of Contents for Heiko JZ025-A1
- Page 1 SERVICE MANUAL Model JZ025-A1 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.
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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 9.Center of gravity ................ -
Page 3: Introduction
Introduction 1. Introduction 1.1 Model name explanation series 9000 BTU Outdoor 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 ●... -
Page 5: Cautions Regarding Products After Repair
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 oil discharges when the pipe is disconnected, and it can cause injury. - Page 6 Introduction 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.
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Page 7: Inspection After Repair
Introduction 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: 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. ●... -
Page 9: Specifications
Specification 2 .Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling heating 2.6（0.8-3.2) 3.2 （0.8-4.2) Capacity rated Btu/h 10920(2730-14333) 8870(2730-10920) Power Consumption(Rated) 0.65 . 4.0 ³ 1.2*10 ³ TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D 800×275x553 Packaged 954x409x625 H*W*D Dimensions 31.5 dB(A) Sound level ELECTRICAL SPECIFICATIONS... -
Page 10: Specification
Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type Refrigerant charge 0.65 Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference Refrigerant control liquid 6.35 Piping connections 9.52 (external diameter) drain Heat insulation type Both liquid and Gas pipes Max. piping Length Max. -
Page 11: Pinping Diagrams
Piping diagrams 4.Piping diagrams ＥＥＶ ＥＥＶ Domestic air conditioner... -
Page 12: Operation Range
Operation range 5.Operation range Domestic air conditioner... -
Page 13: Printed Circuit Board Connector Wiring Diagram
Wiring diagrams 6.Printed Circuit Board Connector Wiring Diagram Connectors PCB (1) (Outdoor Control PCB) Connector for power N and L Connector for ground CN2’ CN3’ Connector for the U, V, W wire of the compressor CN4’ LI (CN7) Connector for reactor LO (CN6) CN21 Connector for fan motor... - Page 14 Wiring diagrams PCB (1) CN10 CN21 CN16 CN20 CN18 CN2’ CN3’ CN4’ ● Domestic air conditioner...
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Page 15: Wiring Diagrams
Wiring diagrams Wiring diagrams Domestic air conditioner... -
Page 16: Outdoor Functions And Control
Functions and control 7.Outdoor 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 24 Hz /25Hz 65 Hz /85Hz... - Page 17 Functions and control Wh_c<-8 Max_hz2 99HZ/99 HZ Wh_c<-2 Max_hz3 99HZ/95 HZ Wh_c<5 Max_hz4 88HZ/87 HZ Wh_c<10 Max_hz5 70HZ/83 HZ Wh_c<17 Max_hz6 59HZ/64 HZ Wh_c<20 Max_hz7 49HZ/60 HZ Wh_c>＝20 Max_hz8 42HZ/56 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.
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Page 19: Protection Function
Functions and control After outdoor unit is off, the EEV opening keep the current on for 5 s, then open the EEV completely for 2 minutes, then become 120 steps (cooling) or 60 steps (heating). The EEV opening will increase if SH (superheat degree) >0 while decrease if SH<0. Adjust frequency: If |SH|=0, 60s/ 1 step If |SH|≥3,and △SH=0, 10s/ 1 step. - Page 20 Functions and control state). TC=indoor coil temp. The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature is higher than 63 ℃ , decrease the rotate speed of the compressor and do the high temperature-preventing protection of the indoor heat exchanger;...
- Page 21 Functions and control the compressor increases at the prohibited speed. During the starting process of the compressor, if the AC current is greater than 6.5A, the frequency of the compressor increases at the speed of no faster than 0.1HZ/second. Remarks: when the outdoor temperature is high, there’s compensation for AC current protection. (1) When the outdoor environment temperature is higher than 40℃, AC current protection value decreases by 2A/1A(09K/12K).
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Page 22: Value Of Thermistor
Functions and control the compressor decreases 1hz/10seconds. Keep the frequency until it 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%... -
Page 23: Functions And Control
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 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 7928.7217 6647.4547 5568.2222 -2.84 2.39 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...
- Page 27 Functions and control 624.3328 563.6604 508.4261 -2.12 1.93 593.5446 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...
- Page 28 Functions and control 85.4976 81.7908 78.1744 -1.15 1.12 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...
- Page 29 Functions and control 18.5157 17.4166 16.3680 -2.02 1.93 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...
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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 indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2. -
Page 32: 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 Reference fault description 498A display (LED1 flash Page Other display (Red/Green Time times) Run □On★Flash■ Off) Indoor and Communication fault between Page.39 ■... -
Page 33: Thermistor Or Related Abnormality
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 34: Eeprom Abnormal
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 35: Indoor Ac Fan Motor Malfunction
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 36: Outdoor Dc Fan Motor Fault
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 Supposed... - Page 37 Service diagnosis 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.
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Page 38: Ipm Protection
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 39: Over-Current Of The Compressor
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 40: The Communication Fault Between Ipm And Outdoor Pcb
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 Decision ■... -
Page 41: Power Supply Over Or Under Voltage Fault
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 42: Overheat Protection For Discharge Temperature
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 43: The Communication Fault Between Indoor And Outdoor
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. Decision ■... - Page 44 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...
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Page 45: Loss Of Synchronism Detection
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; Decision or the compressor is damaged Conditions... -
Page 46: High Work-Intense Protection
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 thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger Decision rises above 65℃... -
Page 47: Performence And Cerves Diagrams
Performance and ceves diagrams 11.Performence and cerves diagrams 11.1 Cooling capacity-temperature curves performance curves cooling value-temperature table indoor temp. DB/WB -10℃ 0℃ 10℃ 20℃ 25℃ 30℃ 35℃ 40℃ 46℃ 18/12℃ 1988 1958 1923 1763 2199 2401 2375 2257 2100 21/15℃ 2094 2035 1988... - Page 48 Performance and ceves diagrams 11.2 Cooling power consumption value- temperature curves performance curves power consumption value-temp.table indoor temp. DB/WB 0℃ 10℃ 20℃ 25℃ 30℃ 35℃ 40℃ 46℃ －10℃ 18/12℃ 21/15℃ 24/16℃ 27/19℃ 30/22℃ 1010 32/23℃ 1023 Domestic air conditioner...
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Page 49: Cooling Discharge Pressure Curves
Performance and ceves diagrams 11.3 Cooling discharge pressure curves performance curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15℃ 27/19℃ 32/23℃ -10℃ 2053 2132 2248 0℃ 2045 2161 2248 10℃ 2069 2189 2321 20℃ 2208 2274 2369 25℃... -
Page 50: Cooling Suction Pressure Curves
Performance and ceves diagrams 11.4 Cooling suction pressure curves performance curves cooling suction pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15℃ 27/19℃ 32/23℃ 18℃ 20℃ 1110 1121 1144 25℃ 1110 1132 1144 30℃ 1121 1144 1178 35℃ 1132 1190 1190 40℃... -
Page 51: Heating Capacity-Temperature Curves
Performance and ceves diagrams 11.5 Heating capacity-temperature curves performance curves heating capacity and indoor/outdoor temp.table y t i DB/WB 15℃ 20℃ 25℃ -15℃ 1820 1696 1618 -10℃ 2797 2558 2359 -7/-8℃ 3438 3117 2897 2/1℃ 3791 3423 3105 7/6℃ 3577 3303 2811 12/11℃... - Page 52 Performance and ceves diagrams 11.6 Heating power consumption value- temperature curves performance curves power consumption value-temp.table y t i DB/WB ℃ ℃ ℃ ℃ 1060 1166 ℃ 1046 1163 1279 ℃ -7/-8 1131 1257 1383 ℃ 1100 1223 1345 ℃ 1069 12/11 ℃...
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Page 53: Heating Discharge Pressure Curves
Performance and ceves diagrams 11.7 Heating discharge pressure curves performance curves Heating discharge pressure.table DB/WB 15℃ 20℃ 25℃ -15℃ 2510 2600 2678 -10℃ 2642 2802 2930 -7/-8℃ 3030 3207 3376 2/1℃ 3266 3477 3572 7/6℃ 3255 3376 3509 3096 3275 3354 12/11℃... -
Page 54: Heating Suction Pressure Curves
Performance and ceves diagrams 11.8 Heating suction pressure curves performance curves heating discharge pressure.table DB/WB 15℃ 20℃ 25℃ -15℃ -10℃ -7/-8℃ 2/1℃ 7/6℃ 12/11℃ 18/16℃ 24/20℃ 1030 Domestic air conditioner... -
Page 55: Sound Level
Circuit diagrams 12.Sound level Sound pressure level 230V,50HZ Sound power level Model Measuring location (cooling/heating) Cooling/heating microphone JZ025-A1 Domestic air conditioner... -
Page 56: Circuit Diagrams
Circuit diagrams 13 Circuit Diagrams 13.1 Outdoor unit control board circuit diagrams R201 LED3 220K-2W CN50 1N4007(1A-1000V) 电电电电 电电电电 RLS4148 四四四 HEAT1 HEAT2 B2P3-VH( 原原 - 立立 ) CN10 CN48 CN49 AC-N DRM1 D250 CN11 D250 D250 DRM2 D250 FUSE1 FUSE2 DRM3 S14K385E2K1(620V) - Page 57 Circuit diagrams 13.2Module board circuit diagram Domestic air conditioner...
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Page 58: Removal Procedure
REMOVAL PROCEDURE 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. -
Page 59: Removal Of Outdoor Panel
1.Removal of Outdoor panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Loosen the screws and lift the top panel and remove the handle. Domestic air conditioner... - Page 60 Loosen the screws of the panel, pull and remove the front panel. Domestic air conditioner...
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Page 61: Removal Of Electrical Box
Removal of procedure 2.Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the fixing screws, Than lift the electrical box. Domestic air conditioner... -
Page 62: Removal Of Fan And Fan Motor
Removal Procedure 3.Removal of Fan and Fan Motor Loosen the fixing screws. Remove the fan and motor. Domestic Air Conditioner... -
Page 63: Removal Of Fan Motor Bracket And Partition
Removal Procedure 4.Removal of Fan Motor Bracket and Partition Loosen the fixing screws and lift the fan motor bracket. Remove the partition Domestic Air Conditioner... -
Page 64: Removal Of Compressor And Heat Exchanger
Removal Procedure 5.Removal of Compressor and Heat Exchanger Remove the valve plate. Remove the valves and the compressor. Loosen the screws and remove the heat exchanger. Domestic Air Conditioner... - Page 65 Generalny Dystrybutor Systemów Klimatyzacji i Pomp Ciepła HEIKO REFSYSTEM Sp. z o. o. ul. Metalowców 5 86-300 Grudziądz +48 723 737 378 www.heiko.pl...
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