Airwell YEVFD Series Service Manual
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Airwell YEVFD Series Service Manual

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Service Manual
New YEVFD series 8-10-12 hp
English Manual
AW-YEVFD220-H16
AW-YEVFD280-H16
AW-YEVFD335-H16
IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning unit. Make sure to
save this manual for future reference.
20.AW.YEVFD.8-12HP.R410A.SM.EN.12.22.Rev01

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  • Page 1 Service Manual New YEVFD series 8-10-12 hp English Manual AW-YEVFD220-H16 AW-YEVFD280-H16 AW-YEVFD335-H16 IMPORTANT NOTE: Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference. 20.AW.YEVFD.8-12HP.R410A.SM.EN.12.22.Rev01...

  • Page 2: Table Of Contents

    CONTENTS 1. General Information...............................1 1.1 Indoor units...............................1 1.2 Feature ................................4 2. Specification ................................5 3. Dimension ................................11 4. Function Parts layout ............................12 5. Center of gravity ..............................13 6. Refrigerant Circuit ...............................14 7. Wiring Diagram..............................16 8. Performance Curves ............................17 9. Selection Procedure ............................21 10.

  • Page 3: General Information

    1. General Information 1.1 Indoor units 4-WAY CASSETTE TYPE/PB-700lB ROUND-WAY SMART AIR FLOW CASSETTE/ PB- 950KB AWSI-CBV005-N11 AWSI-CBV009/007-N11 AWSI-CBV016/012-N11 AWSI-CFV009/007-N11 AWSI-CFV012-N11 AWSI-CFV018/016-N11 AWSI-CFV024-N11 AWSI-CFV038/030-N11 4-WAY CASSETTE TYPE/PB-950JB AWSI-CFV048-N11 AWSI-CFV060-N11 AWSI-CCV018-N11 AWSI-CCV024-N11 AWSI-CCV038/030-N11 AWSI-CCV048/042-N11 MINI 4-WAY CASSETTE TYPE/PB-620KB ONE WAY CASSETTE TYPE/P1B-1050IB AWSI-CBV005-N11 AW-CDV09/07-N11 AWSI-CDV012-N11...
  • Page 4 MED ESP DUCT TYPE (50/100Pa) HlGH ESP DUCT TYPE AW-DBV005-N11 AWSI-DCV018-N11 AW-DBV007-N11 AWSI-DCV024-N11 AW-DBV009-N11 AW-DBV012-N11 AW-DBV016-N11 AW-DCV048/038/030-N11 AW-DBV018-N11 AW-DCV096/072-N11 AW-DBV028/024-N11 AW-DBV030-N11 AW-DBV038-N11 AW-DBV048-N11 NEW CONSOLE N HIGH WALL AW-EAV018/012/09-N11 AW-HBV009/007-N11 AWSI-HBV012-N11 AW-HBV018/016-N11 AWSI-HBV024-N11 AWSI-HBV030-N11 CONVERTlBLE TYPE(New) AW-FAV009-N11 AW-FAV030/028/024-N11 AW-FAV018/016/012-N11 AW-FAV048/038-N11...

  • Page 5: Feature

    1.2 Feature • Inside Parts Upgrading to Increase Energy Efficiency  Particular structure for  Full DC fan motor, increased wind -  Zigzag design, reduce airflow cooled PCB effect. disturbance, less vibration, less (Full series) pressure loss  Super big diameter of 550mm, enhance heat exchange efficiency(Full series) ...
  • Page 6 • Inverse balancing technology ----indoor & outdoor unit self-cleaning 56℃ high temperature self-cleaning Switch indoor unit and outdoor unit self cleaning module with non- ℃ stopping, the outdoor unit waste heat can be used for heating, defrosting and sterilizing the indoor unit. Common self-cleaning room temperature natural frost...

  • Page 7: Specification

    2. Specification Model AW-YEVFD220-H16 Power supply Ph/V/Hz 3/380~415/50/60 Rated capacity 22.60 Rated capacity kBtu/h 77.1 Rated power input 6.46 Max. power input 11.5 Cooling 3.50 SEER 8.50 Rated current 10.6 Max. current    19.0 Rated capacity 22.6 Rated capacity kBtu/h 77.1 Rated power input 5.79 Max. power input 10.90...
  • Page 8 Model AW-YEVFD220-H16 Number of rows Tube pitch(a)x row pitch(b)   21*18.186 Fin spacing 1.45 Fin type (code) Corrugated Fin Coating Type optional Hydrophilic aluminum Outdoor coil Salt Spray Test Duration Hour Tube outside dia.and type Internal thread copper tube Ф7 Coil length x height  1122×1584 Number of circuits Coating type Powder Coating Salt Spray Test Duration...
  • Page 9 Model AW-YEVFD280-H16 Power supply Ph/V/Hz 3/380~415/50/60 Rated capacity 28.00 Rated capacity kBtu/h 95.5 Rated power input 8.75 Max. power input 14.4 Cooling 3.20 SEER 8.20 Rated current 14.4 Max. current    23.8 Rated capacity 30.5 Rated capacity kBtu/h 104.1 Rated power input 8.03 Max. power input 13.70 Heating 3.80...
  • Page 10 Model AW-YEVFD280-H16 Number of rows Tube pitch(a)x row pitch(b)   21*18.186 Fin spacing 1.45 Fin type (code) Corrugated Fin Coating Type optional Hydrophilic aluminum Outdoor coil Salt Spray Test Duration Hour Tube outside dia.and type Internal thread copper tube Ф7 Coil length x height  1122×1584 Number of circuits Coating type Powder Coating Salt Spray Test Duration...
  • Page 11 Model AW-YEVFD335-H16 Power supply Ph/V/Hz 3/380~415/50/60 Rated capacity 31.50 Rated capacity kBtu/h 107.5 Rated power input 10.16 Max. power input 15.4 Cooling 3.10 SEER 7.70 Rated current 16.8 Max. current    25.4 Rated capacity 31.5 Rated capacity kBtu/h 107.5 Rated power input 8.51 Max. power input 14.60 Heating 3.70...
  • Page 12 Model AW-YEVFD335-H16 Number of rows Tube pitch(a)x row pitch(b)   21*18.186 Fin spacing 1.45 Fin type (code) Fin Coating Type optional Hydrophilic aluminum Outdoor coil Salt Spray Test Duration Hour Tube outside dia.and type Internal thread copper tube Ф7 Coil length x height  1122×1584 Number of circuits Coating type Powder Coating Salt Spray Test Duration...

  • Page 13: Dimension

    3. Dimension...

  • Page 14: Function Parts Layout

    4. Function Parts layout...

  • Page 15: Center Of Gravity

    5. Center of gravity...

  • Page 16: Refrigerant Circuit

    6. Refrigerant Circuit...
  • Page 17 Part name Sign Function Date Note Capacity control, meet indoor load request by adjusting frequency and Compressor 20°C opening and closing fixing frequency  compressor. High pressure protection 4.15Mpa, OFF Pressure switch In cooling, compressor frequency adjustment and protection control for 0~1.7MPa abnormal pressure. Electronic In heating, refrigerant flow control Φ3.0 expansion valve...

  • Page 18: Wiring Diagram

    7. Wiring Diagram 0150543922 <WIRE DIAGRAM> CN19 CN31 CN41 6.3A 250VAC FILTER FUSE2 CN910 CN911 SMG1 SMG2 L1’ L2’ L3’ SW01 SW02 SW03 POWER 1 2 3 4 5 6 7 8 REACTOR SW4 SW5 SW6 SW7 Control Board CAP. Board LEVA1 CN42 INV Board...

  • Page 19: Performance Curves

    8. Performance Curves (1) Calculation method of cooling capacity ----cooling capacity to be known = cooling capacity*(A*B*C*D*E) W A. Capacity compensation value of indoor B. Capacity compensation value of outdoor air wet-bulb temperature condition air dry-bulb temperature condition 40 43 Outdoor air dry-bulb temperature (°C ) Indoor air wet-bulb temperature (°C ) D.
  • Page 20 Notes for E: (1) The main pipe (from outdoor to the first branch pipe) diameter should be enlarged one size when the single way pipe length is over 90m. (2) When in cooling mode, outdoor is lower than indoor; or when in heating mode, outdoor is higher than indoor, the compensation factor should be decreased the below value from figure E. Vertical height drop between indoor and outdoor Adjustment factor 0.003 0.006 0.009 0.012 0.015 0.018 0.021 0.024 0.027 0.030...
  • Page 21 E. Capacity compensation value of pipe length, pipe diameter and height drop AW-YEVFD220-H16 AW-YEVFD280-H16 Liquid pipe: 12.7 Liquid pipe: 12.7 Gas pipe： 22.22 Gas pipe： 25.4 Liquid pipe: 9.52 Liquid pipe: 9.52 Gas pipe: 22.22 Gas pipe: 19.05 40 60 80 100 120 140 160 175 40 60...
  • Page 22 (1) Correction factor for pipe length and drop. In cooling Single pipe length from the farthest outdoor unit to the farthest indoor unit(m) Drop 50.0 0.902 0.881 0.86 0.838 0.815 0.792 0.77 0.748 0.726 0.719 0.698 0.669 0.650 40.0 0.93 0.902 0.881 0.86 0.838 0.815 0.792 0.77 0.748 0.726 0.719 0.698 0.669 0.650 30.0 0.95 0.93 0.902 0.881 0.86 0.838 0.815 0.792 0.77 0.748 0.726 0.719 0.698 0.669 0.650...

  • Page 23: Selection Procedure

    9. Selection Procedure Calculate each indoor load separately Select the indoor units that matches the indoor load Perform temperature correction to calculate the actual capacity Reselect the of the indoor unit indoor units Select the outdoor units Indoor actual capacity indoor load ≥...

  • Page 24: Operation Range

    10. Operation Range...

  • Page 25: Noise Level

    11. Noise Level (1) Testing illustration Front (2) Testing condition: a. Unit running in the nominal condition b. Test in the semi-anechoic chamber c. Noise level varies from the actual factors such as room structure, etc. (3) Octave band level AW-YEVFD280-H16 AW-YEVFD220-H16 NC-60...

  • Page 26: Outdoor Installation

    12. Outdoor Installation 12.1 Safety The outdoor uint adopts "simultaneous control" type, all indoors should be heating or cooling simultaneously. To protect compressor, before startup, the unit should be electrified for over 12 hours. If the unit is not used for a  long time, please cut off the power to save energy, or the unit will consume the power. WARNING • If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
  • Page 27 • For the liquid pipe and the gas pipe, take measures for heat insulation too. If there is no heat insulation, the dew drop will wet the things. • If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. • This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

  • Page 28: Installation Instruction

    12.2 Installation instruction In installation, please check specially the below items: • If the connected units quantity and the total capacity is in the allowable range? • If the refrigerant pipe length is in the limited range? • If the pipe size is proper? And if the pipe is installed horizontally? •...
  • Page 29 The unit should be installed at the ■ The place where the water can flow ■ The unit is better not be installed place where the cold/hot air or fluently. at the below places, or it will cause noise will not interfere the neighbours. ■ The place where no other heat damage.
  • Page 30 Outdoor Installation Installation location ■ Outdoor unit should be placed in well ventilated and dry place. ■ Outdoor noise and exhaust should not affect neighbors and around the ventilation. ■ Ensure the ground steadily reliable. ■ Do not install the outdoor unit on high oil,salt spray or harmful gases. ■ Don't being installed to electromagnetic wave can directly radiate an electricity box and keep off electromagnetic wave radiation possibly, at least more than 3 meters.
  • Page 32 Case 2: obstacles on the inlet and top side...
  • Page 33 Case 3:obstacles on the outlet, both right and left side Single Outdoor Min360mm Min1000mm Min300mm Min150mm...
  • Page 34 Multi Outdoor If h>H, please set the outdoor on the foundation to make sure H≥h. H=The height of outdoor and foundation 0<h≤1/2H Over 600 1/2H<h≤H Over 1400 Note: Avoid making air short cycle in any case.
  • Page 36 19.05 is 0-type, the pressure preservation will be bad, thus it must be 1/2H type and over the min. thickness. 3. The branch pipe and the gather pipe must be from Airwell. 4. When installing the stop valve, refer to the relative operation instruction.
  • Page 37 Anti-fouling measures First, clean the pipe. Position Installation period Measures More than 1 month Flat the pipe end Outdoor Less than 1 month Flat the pipe end or seal with adhesive tape Indoor Nothing to do with period Pipe specification: The first branch pipe 1.
  • Page 38 3. Pipe "c" diameter (main pipe, between outdoor gather pipe and the first branch pipe) Main pipe Enlarged main pipe Model Gas pipe (mm) Liquid pipe (mm) Gas pipe (mm) Liquid pipe (mm) Ø19.05 Ø9.52 Ø22.22 Ø12.7 AW-YEVFD220-H16 Ø22.22 Ø9.52 Ø25.4 Ø12.7 AW-YEVFD280-H16 Ø25.4 Ø12.7 Ø28.58 Ø15.88 AW-YEVFD335-H16 Note: When the distance from outdoor unit to the longest indoor unit is over 90m, the diameter of main pipe should be enlarged.
  • Page 39 B. Indoor unit Gas pipe side Liquid pipe side Model Capacity Connecting Connecting Diameter (mm) Diameter (mm) method method Ø9.52 Ø6.35 Ø9.52 Ø6.35 Ø12.7 Ø6.35 Ø12.7 Ø6.35 Ø12.7 Ø6.35 Ø15.88 Ø9.52 Braze Flared Ø15.88 Ø9.52 Ø15.88 Ø9.52 Ø15.88 Ø9.52 Ø15.88 Ø9.52 Ø25.4 Ø9.52...
  • Page 40 Pipe installation When doing the piping connection, please do the following: ■ Please don't let the pipe and the parts in the unit collide each other. ■ When connecting the pipes, close the valves fully. ■ Protect the pipe end against the water, impurity into the pipes (welding after being flat, or being sealed with adhesive tape). ■ Bend the pipe as large semi-diameter as possible(over 4 times of the pipe diameter). ■...
  • Page 41 ■ The refrigerant pipe should be clean. The nitrogen should flow under the pressure of about 0.5Mpa and when charging the nitrogen, stop up the end of the pipe by hand to enhance the pressure in the pipe, then loose the hand (meanwhile stop up the other end). 1st side 2nd side source valve 0.2MPa hand ■ When connecting the pipes, close the valves fully. ■...
  • Page 42 Because the unit is with refrigerant R410A, the below issues should be paid attention: ■ To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and charging hose. ■ To prevent the compressor oil into the refrigerant cycle, please use the anti-counter-flow adapter. D. Check valve operation Open Open/close method: ■...
  • Page 43 Note: ■ To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and charging hose. ■ Mark the refrigerant type in different colour on the tank. R410A is pink. ■ Must not use the charging cylinder, because the R410A will change when transferring to the cylinder. ■...
  • Page 44 Communication wiring figure Outdoor 1 Control wire for wired controller with polarity Indoor 1 Indoor 2 Indoor 3 Indoor 4 Indoor 5 Wired controller Indoor 6 Indoor 7 Indoor 8 Indoor 9 Indoor 10 Wired Wired Wired Wired controller controller controller controller Wired...
  • Page 45 Power wiring figure Please make sure that when the unit is running, the input voltage is no less than 380V; if it is lower than 380V,the unit may run abnormal. And the communication line shielding layer of the outdoor unit should pass through the buckle magnetic ring.
  • Page 46 Indoor power source and communication wiring Rated Communication wire Item Power Rated current of residual section Wire current of Indoor cable circuit breaker(A) length overcurrent Outdoor/ Indoor/ total section Ground fault interruptor(mA) breaker indoor indoor current (A) response time(S) <10 20A, 30mA, below 0.1s ≥10 and <15 30A, 30mA, below 0.1s...
  • Page 47 Protection device (such as high pressure switch) •   H igh pressure switch is the device which can stop the unit automatically when the unit runs abnormally. When the high pressure switch acts, the cooling/heating mode will stop but the running LED on wired controller will be light still. The wired controller will display failure code. •...

  • Page 48: Pcb Photo

    13. PCB Photo PCB code: 0151800421B LED10 LED4 LED3 LED6 LED5 LED2 LED7 LED8 LED9...

  • Page 49: Dip Switch Setting

    14. Dip Switch Setting ① BM1 introduction BM1 introduction Indoor unit quantity Start to search indoor unit（Default） BM1_1 lock Stop searching indoor unit and lock the quantity BM1_2 BM1_3 BM1_4 BM1_5 Capacity selection BM1_2 BM1_3 Capacity selection BM1_4 10HP BM1_5 12HP Indoor units ON/OFF simultaneous controlIn available（Default）...

  • Page 50: Outdoor Digital Tube Display Setting

    15. Outdoor digital tube display setting ■ Long press ENTER (SW7) 3 seconds to enter dial parameter selection, short press ENTER (SW7) switch edit , short press EXIT (SW6) exit  ： ■ key part: long press ENTER (SW7)3 seconds to enter parameter view or modify, short press UP (SW4) data increase, short press DOWN (SW5) data decrease, short press SW6 exit parameter view or modify ■...
  • Page 51 0~3 of SW1 is used to select the outdoor number. SW3 range of 0, 1, 15, observe the outdoor unit parameters. (the master unit can display the parameters of the other outdoor unit and the indoor units, while the slave outdoor only displays its own parameters).
  • Page 52 Function Digital tube LD2 ~ 4 display LD2： CH1： 1 ON 0 OFF Outdoor Heater output LD3： BH： 1 ON 0 OFF unit LD4：Reserved，Display “-” address Program version 1 means Ver1.0 Function Digital tube LD2 ~ 4 display Unit: kg, 2 decimal Tdef Unit: ℃...
  • Page 53 Function Digital tube LD1 ~ 4 display Press ENTER (SW7) for 3 seconds, display 1111, indoor Indoor unit expansion valve  valve fully open 12（C） fully open Press EXIT (SW6) for 3 seconds, display ----, cancel the forced control of the indoor unit expansion valve. 13（D） All the indoor unit in cooling Press ENTER (SW7) for 3 seconds, display 1111, open；...
  • Page 54 Function Digital tube LD1 ~ 4 display Power restrain operation control mode 15（F） 12(C） 0-unavaiable 1-available selection 15（F） 13 (D) ModeBus Fahrenheit unit selection Allow access to factory automation test 0- forbidden 15（F） 14 (E) mode mark (for factory testing) 1- allow(default）...

  • Page 55: Outdoor Unit Control

    16. Outdoor Unit Control 16.1 Compressor startup control After receiving the outdoor startup instruction, outdoor open SV1 30 seconds and then standby. When startup, the compressor will keep for 3 min at 45rps (when Ta<40°C) or 3 min at 40rps (when Ta>=40°C). In cooling mode, meet running 1min & (Td-CT)≥20°C or Ps≤0.1MPa (or max. running time is 3min),quite the startup control;...

  • Page 56: Defrosting Control

    16.3 Defrosting control In order to have the effect heating operation, need defrosting control. 16.3.1 Entering condition: Ta≤20°C ■ & After heating startup 60min ■ OR Last defrosting~ heating cumulative operation time is more than 60 minutes A: Ta≥6°C, Te≤-10°C  For 5min continuously  ■ OR B: -15≤Ta<6°C, Te≤(5Ta-72)/7  For 5min continuously ...
  • Page 57 B: In heating mode When load rate<25%: after 1 hours, 4-way valve doesn't reversing oil return operation 25%≤load rate<50%: after 2 hours, 4-way valve  The master unit compressor cumulative ■ OR ■ & doesn't reversing oil return operation operation time Load rate≤30% 50%≤load rate<75%: after 4 hours, 4-way valve  ■ & doesn't reversing oil return operation After the outdoor unit startup ■...

  • Page 58: Failure Code

    17. Failure Code Inverter outdoor unit failure code Digital Indication tube on wired Failure code indication Failure description Remarks controller definition on master (hex) unit Defrosting temp. Continuous disconnect for 60 seconds or short circuit, 20-0 Resumable sensor (Te) failure failure alarm Ambient temp.
  • Page 59 Digital Indication tube on wired Failure code indication Failure description Remarks controller definition on master (hex) unit Compression ratio (ε) ≥12.0 for 5  consecutive minutes,  Once failure Compression ratio 39-1 failure alarm. The failure will be removed after 3 minutes. locked, un- (ε)too high Failure is locked if it occurs 4 times in 2 hours. resumable.
  • Page 60 Digital Indication tube on wired Failure code indication Failure description Remarks controller definition on master (hex) unit Upper DC Fan The failure will alarm when it runs below 20 rpm for 40 71-0 Once failure failure seconds or below 20% of the target value for 2 minutes. locked, un- The failure will be removed after 3 minutes.
  • Page 61 Digital Indication tube on wired Failure code indication Failure description Remarks controller definition on master (hex) unit Abnormal communication If no communication signal is detected for 30 between the seconds, , failure alarm.After detection, inverter Resumable inverter module module will recover immediately. and the control Module rectifier side software instantaneous ...

  • Page 62: Troubleshooting

    18. Troubleshooting [20~24] Temperature sensor failure Reconnect If sensor terminal is fixed well If sensor resistor Replace sensor /characteristic is proper Check if PCB is faulty, if yes, replace it [28, 29] High/low pressure sensor failure If sensor terminal is fixed well Reconnect If voltage between red terminal Replace PCB and black terminal is 5V when testing pressure sensor by multimeter...
  • Page 63 [26-0, 26-1, 26-2] Communication circuit between indoor and outdoor If wiring between P and Q Modify the communication wire is wrong or broken down If wire of CN29 on outdoor Modify the port connecting board is normal If wire of CN15 outdoor connecting board is normal If indoor and outdoor are Connect power source...
  • Page 64 [33] Outdoor EEPROM failure Reconnect If the EEPROM is fixed well Replace EEPROM [35] 4-way valve reversing failure If connection between 4-way valve Re-connect and connecting board is good If system meets condition of 4-way valve reversing: Check if SV1 leaks Pd-Ps>0.6MPa Measure if CN49 voltage on connecting board is Replace connecting board 220VAC after 4-way valve...
  • Page 65 [30] High pressure switch shutoff failure If connection between pressure Re-connect switch and connecting board is good If the system pressure meets the Replace pressure switch condition that pressure switch shuts off Make pressure switch close, measure if terminal is conductive by multimeter Check the piping system If the system is clogged Make pressure switch terminal...
  • Page 66 [36] Protection of oil temperature too low If Toil is fixes well and if  Fix again or replace the sensor its characteristic is correct If the terminal of LEVb is fixed well Reconnect In cooling mode, when the Replace or adjustment indoor unit off if the EEV the indoor unit EEV can't completely close Recharge refrigerant Check if refrigerant is too much...
  • Page 67 [39-0, 39-1] Low pressure too low and compression ratio too high If actual pressure is in conformance with the Replace pressure sensor measured data by sensor Check if stop valve Open stop valve is open fully Check if system is Recharge refrigerant lack of refrigerant Check if terminal of...
  • Page 68 [40] High pressure protection If characteristic of high pressure Replace pressure sensor sensors are normal If stop valve Open stop valve opens fully If in cooling Check fan motor outdoor fan motor runs normally If in heating indoor fan Check indoor motor runs normally and if filter is clogged Check if piping...
  • Page 69 [43] Discharging temp. sensor Td too low protection If the sensor characteristic Replace the sensor is correct If the teminal of sensor Reconnect is fixed well In cooling mode, when the Replace of adjustment the indoor unit off if the EEV can't indoor unit EEV completely close Check if refrigerant...
  • Page 70 [49] Low pressure switch failure If connection between pressure Re-connect switch and connecting board is good If the system pressure meets the If the system lack of refrigerant condition that pressure switch shuts off Recharge the refrigerant Make pressure switch terminal Replace connecting board on connecting board in short circuit,          check if failure exists still Replace pressure switch...
  • Page 71 [64] CT over current Check if wire between connecting board and module Re-connect is connected normally Check if CT wire is conductive Replace wire If normal after If temperature on top of fixed  If AC contactor replacing CT fixed frequency compressor  work detector is too high Replace PCB Recharge refrigerant If there is air into the system Fix the system If there is clogged, motor is bad...
  • Page 72 [71] DC motor blocked Rotate fan motor by Replace fan motor hand to check if there is obviously fiction Check the motor and Re-connect PCB connection is well Forced the fan in low speed, measure if it has alternating Replace the motor voltage between FG and GND Replace the outdoor PCB...
  • Page 73 [75] No pressure drop between high pressure and low one Check if high/low pressure Re-connect sensor is connected well Check if compressor wire is Correct compressor wire connect normally If wires of inverter compressor Correct compressor wire are connected oppositely Replace 4-way valve If 4-way valve is interconnected Measure if there is voltage U, V, W...
  • Page 74 [82] Compressor current protection [108] Transient over current in IPM module rectifier side software [109 Current detection circuit abnormality [123] Transient over current in IPM module rectifier side hardware Check if the wires of the Reconnect or change the wires compressor connect well Measured the compressor winding Change the compressor...
  • Page 75 [110] Power module overcurrent Improve power supply Check if voltage of power supply is circuit normal Check if wire of electric box  Correct the wiring due to is correct, and if compressor diagram wire is fixed well If power module is Replace power module normal If compressor is normal Replace compressor (compressor coil resistor, insulation)
  • Page 76 [111] Compressor out of control Check if voltage of power supply is normal Improve power supply circuit Check the wires among U, V, Replace the wires W of compressor are normal If compressor is normal Replace the compressor (compressor coil resistor, insulation) Compressor load too much, check the reason [81] IPM modular temp.
  • Page 77 [113] Protection of overload Improve power supply circuit Check if voltage of power supply is normal Check if wire of electric box is correct Correct the wiring due to diagaram If compressor is normal (compressor Replace compressor coil resistor, insulation) If power module is normal Replace power module Compress load too much, check the reason [114] Voltage too low of DC bus line of transducer...
  • Page 78 [115] Voltage too high of DC bus line of transducer Check if voltage of power Improve power supply circuit supply is normal Check if wire of electric box is correct Correct the wiring due to diagram Measure if DC bus line Circuit of DC bus line voltage on voltage between P and N of inverter control board abnormal, module is over 644V...
  • Page 79 [117] Transducer over current (software protection) Check voltage of power supply is normal Improve power supply circuit Check if wire of electric box is correct Correct the wiring due to diagram If compressor is normal Replace compressor (compressor coil resistor, insulation) If power module is normal Replace power module Compressor load too much, check the reason [118] Compressor startup failure...
  • Page 80 [119] Current detecting circuit abnormal of transducer Check if wire between DCCT and control board wire between IPM and compressor are correct; if Correct the wiring due to diagram wiring direction of DCCT is normal Check if current sensor is Replace current sensor normal Replace inverter PCB...
  • Page 81 [120] Power supply of transducer abnormal Improve power supply circuit Check if voltage of power supply is normal Check if wire of electric box is correct Correct the wiring due to diagram Adjust or replace relay If relay or AC contactor acts well or AC contactor Measure if DC bus line DC bus line voltage circuit on voltage between P and N on inverter board broken down,...
  • Page 82 APPENDIX Sensor characteristic Temp. sensor characteristic No. Sensor type Characteristic Indoor coil/outdoor suction/oil temp./defrost/ambient R (25°C)=10KΩ    B (25°C/50°C)=3700K temp. sensor Wired controller ambient temp./indoor ambient temp. R (25°C)=23KΩ    B (25°C/50°C)=4200K sensor Outdoor discharging temp. sensor R (80°C)=50KΩ    B (25°C/80°C)=4450K Herein, the sensor typical resistor is as follows: (1) R (25°C)=10KΩ B (25°C/50°C)=3700K R25=10KΩ±3%   B25/50=3700K±3% Temp Resistance (KΩ)
  • Page 83 R25=10KΩ±3%   B25/50=3700K±3% Temp Resistance (KΩ) % (Resist. tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 22.54 21.61 20.68 4.31 4.31 21.52 20.65 19.77 4.24 4.24 20.56 19.74 18.92 4.16 4.16 19.65 18.87 18.10 4.09 4.09 18.78 18.05 17.33 4.02 4.02 17.96 17.28...
  • Page 84 R25=10KΩ±3%   B25/50=3700K±3% Temp Resistance (KΩ) % (Resist. tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 3.12 2.97 2.83 5.00 5.00 3.02 2.87 2.73 5.06 5.06 2.91 2.77 2.63 5.13 5.13 2.82 2.68 2.54 5.19 5.19 2.72 2.59 2.45 5.25 5.25 2.63 2.50...
  • Page 85 (2) R (25°C)=23KΩ B (25°C/50°C)=4200K R25=23KΩ±3%   B25/50=4200K±3% Temp Resistance (KΩ) % (Resist. tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 538.77 513.12 487.46 5.00 5.00 502.58 478.89 455.21 4.95 4.95 469.29 447.41 425.53 4.89 4.89 438.61 418.38 398.15 4.84 4.84 410.29 391.56 372.84 4.78 4.78...
  • Page 86 R25=23KΩ±3%   B25/50=4200K±3% Temp Resistance (KΩ) % (Resist. tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 32.98 32.22 31.45 2.38 2.38 31.39 30.67 29.96 2.33 2.33 29.87 29.21 28.55 2.27 2.27 28.45 27.83 27.21 2.22 2.22 27.10 26.52 25.95 2.16 2.16 25.82 25.28...
  • Page 87 R25=23KΩ±3%   B25/50=4200K±3% Temp Resistance (KΩ) % (Resist. tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 4.15 3.99 3.84 3.84 3.84 4.00 3.85 3.70 3.88 3.88 3.86 3.71 3.56 3.93 3.93 3.72 3.58 3.44 3.97 3.97 3.59 3.45 3.31 4.01 4.01 3.47 3.33...
  • Page 88 (3) R (80°C)=50KΩ B (25°C/80°C)=4450K R80=50KΩ±3%   B25/80=4450K±3% Temp Resistance (KΩ) % (Resist.tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 1749.01 1921.99 2094.97 9.00 9.00 1651.43 1813.27 1975.10 8.93 8.93 1560.17 1711.65 1863.13 8.85 8.85 1474.74 1616.59 1758.45 8.78 8.78 1394.71 1527.61 1660.51 8.70 8.70 1319.68...
  • Page 89 R80=50KΩ±3%   B25/80=4450K±3% Temp Resistance (KΩ) % (Resist.tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 168.70 178.33 187.96 5.40 5.40 161.74 170.83 179.93 5.33 5.33 155.09 163.68 172.28 5.25 5.25 148.75 156.87 164.98 5.18 5.18 142.70 150.37 158.04 5.10 5.10 136.92 144.17 151.41...
  • Page 90 R80=50KΩ±3%   B25/80=4450K±3% Temp Resistance (KΩ) % (Resist.tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 26.34 27.48 28.61 4.13 4.13 25.45 26.56 27.68 4.20 4.20 24.59 25.69 26.78 4.27 4.27 23.76 24.84 25.91 4.33 4.33 22.97 24.02 25.08 4.40 4.40 22.20 23.24 24.28...
  • Page 91 Enthalpy-humidity chart Vapour partial pressure 0 10 0mmHg Humidity d. g/kg Dry air k∫ /kg kcal /kg °C °C °C °C Wet air enthalpy-humidity chart 1000 1013.25mbar Atmospheric pressure (10Pa) 760mmHg =1.01t+0.001d (2500+1.84t)k∫/kg dry  =1.24t+0.001d (597.3+0.44t)kcal/kg dry air...
  • Page 92 Consult with the sales agency or manufacturer for details. ATTENTION : Le design et les données techniques sont donnés à titre indicatif et peuvent être modifiés sans préavis. AIRWELL RESIDENTIAL SAS 10,Rue du Fort de Saint Cyr, 78180 Montigny le Bretonneux - France www.airwell.com...

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Aw-yevfd220-h16Aw-yevfd280-h16Aw-yevfd335-h16

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