INVENTOR P8MVI32-09WiFi Service Manual
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INVENTOR P8MVI32-09WiFi Service Manual

INVENTOR P8MVI32-09WiFi Service Manual

Air conditioning systems wall mounted unit
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AIR CONDITIONING SYSTEMS
WALL MOUNTED UNIT

• SERVICE MANUAL

MODELS:
P8MVI32-09WiFi / P8MVO32-09
P8MVI32-12WiFi / P8MVO32-12
P8MVI32-18WiFi / P8MVO32-18
P8MVI32-24WiFi / P8MVO32-24
ENGLISH

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Summary of Contents for INVENTOR P8MVI32-09WiFi

  • Page 1: Service Manual

    AIR CONDITIONING SYSTEMS WALL MOUNTED UNIT • SERVICE MANUAL MODELS: P8MVI32-09WiFi / P8MVO32-09 P8MVI32-12WiFi / P8MVO32-12 P8MVI32-18WiFi / P8MVO32-18 P8MVI32-24WiFi / P8MVO32-24 ENGLISH...

  • Page 3: Table Of Contents

    CONTENTS 1. Precaution ..............................2 1.1 Safety Precaution ....................2 1.2 Warning ........................2 2 Information servicing ........................... 4 3. Model list ..............................10 4. Dimension ..............................11 4.1 Indoor Unit ......................11 4.2 Outdoor Unit ......................14 5. Refrigerant Cycle Diagram ........................18 6 Installation Details ............................

  • Page 4: Precaution

    Use the correctly rated breaker 1. Precaution of fuse. There is risk of fire or electric shock. 1.1 Safety Precaution Do not modify or extend the To prevent injury to the user or power cable. other people and property damage, the There is risk of fire or electric shock.
  • Page 5 Do not place a heater or other Turn the main power off when appliance near the power cable. cleaning or maintaining the product. There is risk of fire and electric shock. There is risk of electric shock. Do not allow water to run into When the product is not be used electrical parts.

  • Page 6: Information Servicing

    Do not expose the skin directly They may burn of explode. to cool air for long time. (Do not sit in If the liquid from the batteries the draft). gets onto your skin or clothes, wash it Do not use the product for well with clean water.
  • Page 7 leak detection equipment being used is that the work is carried out. The ventilation suitable for use with flammable should safely disperse any released refrigerants, i.e. no refrigerant sparking, adequately sealed or intrinsically and preferably expel it externally into the safe.
  • Page 8 procedures. If a fault exists that could longer serve the purpose of preventing the compromise safety, then no ingress of flammable atmospheres. electrical supply shall be connected to the Replacement parts shall be in circuit until it is satisfactorily dealt with. If accordance with the manufacturer's the fault cannot be corrected immediately specifications.
  • Page 9 The following leak detection methods are evacuate; deemed acceptable for systems containing purge again with inert gas; flammable refrigerants. Electronic leak open the circuit by cutting or brazing. detectors shall be used to detect The refrigerant charge shall be recovered flammable into the correct recovery cylinders.
  • Page 10 Prior to recharging the system it shall be h) Do not overfill cylinders. (No more than pressure tested with OFN. The system 80 % volume liquid charge). shall be i) Do not exceed the maximum working leak tested on completion of charging but pressure of the cylinder, even temporarily.
  • Page 11 The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order.

  • Page 12: Model List

    3. Model list Model Names of Indoor/Outdoor Units Capacity Indoor units Outdoor units P8MVI32-09WiFi P8MVO32-09 3D inverter P8MVI32-12WiFi P8MVO32-12 P8MVI32-18WiFi P8MVO32-18 P8MVI32-24WiFi P8MVO32-24...

  • Page 13: Dimension

    4. Dimension 4.1 Indoor Unit Model P8MVI32-09WiFi 717 193 302 P8MVI32-12WiFi 805 193 302 P8MVI32-18WiFi 964 222 325 P8MVI32-24WiFi 1106 232 342...

  • Page 14: P8Mvi32-12Wifi / P8Mvo32

    P8MVI32 - 09WiFi P8MVI32-09WiFi / P8MVO32-09, P8MVI32-12WiFi / P8MVO32-12...
  • Page 15 For P8MVI32-18WiFi / P8MVO32-18 For P8MVI32-24WiFi / P8MVO32-24,...

  • Page 16: Outdoor Unit

    4.2 Outdoor Unit More than 30cm More than 60cm (Service space) More than 30cm More than 60cm More than 200cm...
  • Page 17 For P8MVO32-09, P8MVO32-12, 779 W3 487 W1 300 D 770 W 70 W2 25 B1 61.5 A2 12 A1...
  • Page 18 For P8MVO32-09, P8MVO32-12, P8MVO32-18 815 W3 514 W1 333 D 800 W 70 W2 62 B1 D2 D3 20 A1 61.6 A2...
  • Page 19 For P8MVO32-24,...

  • Page 20: Refrigerant Cycle Diagram

    5. Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE T3 Condenser temp. sensor CAPILIARY TUBE HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE Accumulator...

  • Page 21: Installation Details

    6 Installation Details 6.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque inch N.cm N.cm Ф6.35 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 2500(255kgf.cm) 2600(265kgf.cm) Ф12.7 3500(357kgf.cm) 3600(367kgf.cm) Ф15.9 4500(459kgf.cm) 4700(479kgf.cm) Ф19 6500(663kgf.cm) 6700(683kgf.cm) 6.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet.

  • Page 22: Pipe Length And The Elevation

    Max. Max. Additional Pipe size Model length Elevation Length refrigerant Liquid B (m) A (m) (g/m) 3/8’’ 1/4’’ P8MVI32-09WiFi / P8MVO32-09 (Ф9.52) (Ф6.35) 3/8’’ 1/4’’ P8MVI32-12WiFi / P8MVO32-12 (Ф9.52) (Ф6.35) 1/2’’ 1/4’’ P8MVI32-18WiFi / P8MVO32-18 (Ф12.7) (Ф6.35) 5/8’’ 3/8’’ P8MVI32-24WiFi / P8MVO32-24 (Ф15.9)

  • Page 23: Installation For The First Time

    3) Connect the charge hose of handle hi 6.4 Installation for the first time connection to the vacuum pump. Air and moisture in the refrigerant system 4) Fully open the handle Lo of the have undesirable effects as below: manifold valve. ● Pressure in the system rises.

  • Page 24: Adding The Refrigerant After Running The System For Many Years

    Procedure: 1). Connect the charge hose to the Procedure: charging cylinder, open the 2-way valve 1). Connect the charge hose to the 3-way and the 3-way valve. service port, open the 2-way valve and the Connect the charge hose which you 3-way valve.
  • Page 25 Procedure 1). Confirm that both the 2-way and 3-way valves are set to the opened position Remove the valve stem caps and confirm 1) Completely tighten the flare nuts of the that the valve stems are in the opened indoor and outdoor units, confirm that position.
  • Page 26 coming out, then tighten the flare nut again. Make sure the pressure display in the pressure indicator is a little higher than the atmosphere pressure. Then remove the charge hose from the 3 way valve. 8) Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve.

  • Page 27: Re-Installation While The Outdoor Unit Need To Be Repaired

    Connect the charge hose which you disconnected from the vacuum pump to 6.7 Re-installation while the outdoor unit the valve at the bottom of the cylinder. need to be repaired Make the cylinder bottom up to ensure 1. Evacuation for the whole system liquid charge.

  • Page 28: Disassemble Guide

    7. Disassemble Guide How to Remove the filter Step1: Put your hands at A and B, lift the filter a little to loosen the fastener Step2: Pull the filter gently along the horizontal direction. Step3: Pull out the filter. How to Remove the horizontal louver Step1: Open the horizontal louver ,push the locker...
  • Page 29 How to hold the indoor for piping connection Step1: Open the screw caps A and B, remove the two screws. Step2: Open the panel assembly, move the slider to fix the panel. Step3: Press the locker A and B, to lose the indoor from the installation plate Step4: Unfold the supporter of Installation plate,...
  • Page 30 How to Remove the panel assembly Step1: Open the screw caps A and B, remove the two screws. Step2: Open the panel assembly, loosen the display board connector. Step3: Pull the panel assembly along the direction indicated in right image to remove it.
  • Page 31 to show clearly inside, these pictures are How to Remove the PCB without panel. Step1: Press A to remove the terminal cover. Step2: Remove screw B to remove the cover of the electronic control box . Step3: Then you can remove the PCB. Note: It is not necessary to remove the panel to remove the PCB.
  • Page 32 How to Remove the Chassis assembly CAUTION: Because the 24K indoor unit is relatively large and heavy, it must have two persons to implement the following steps. Step1: Remove the left and right pipe cover. Step2: Remove the 5 screws A,B,C,D,E remove support part F and G.
  • Page 33 7.8 How to Remove the Evaporator assembly CAUTION: Because the 24K indoor unit is relatively large and heavy, it must have two persons to implement the following steps. Step1: Remove the Electric control box. Step2: Remove the Chassis assembly Step3: Unfold the Pipe clamp board C, remove screw A and B.

  • Page 34: Wiring Diagram

    8. Wiring Diagram 8.1 Indoor Unit P8MVI32-09WiFi, P8MVI32-12WiFi, P8MVI32-18WiFi, P8MVI32-24WiFi...

  • Page 35: Outdoor Unit

    8.2 Outdoor Unit P8MVO32-09, P8MVO32-12, P8MVO32-18, P8MVO32-24...

  • Page 36: Operation Characteristics

    9. Operation Characteristics Cooling operation Heating Drying operation operation Temperature Room temperature 17℃~32℃ 0℃~30℃ 10℃~32℃ (62℉~90℉) (32℉~86℉) (50℉~90℉) Outdoor 0℃~50℃ -15℃~30℃ 0℃~50℃ temperature (32℉~122℉) (5℉~86℉) (32℉~122℉) -15℃~50℃ (5℉~122℉) (For the models with low temperature cooling system) CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally.

  • Page 37: Electronic Function

    10. Electronic function Dispalys ‘ ’ for three seconds when 10.1 Abbreviation Fresh, Swing, Turbo or Silence feature is T1: Indoor room temperature cancelled. T2: Coil temperature of evaporator Dispalys ‘ ’ under deforsting operation. T3: Coil temperature of condenser Dispalys ‘...

  • Page 38: Main Protection

    10.3.6 Compressor preheating 10.3 Main Protection functions 10.3.1 Three minutes delay at restart Preheating permitting condition: for compressor When T4(outdoor ambient temperature) Less than 1 minute delay for the 1 time ＜3°C, the preheating function will be start-up and 3 minutes delay for others. activated.

  • Page 39: Operation Modes And Functions

    The outdoor unit will be run at different H（=H） fan speed according to T4. H-（H-=H-G) For different outdoor units, the fan M+(M+=M+Z) M(M=M) speeds are different. M-(M-=M-Z) For P8MVI32-09WiFi, P8MVI32-12WiFi L+(L+=L+D) models, L(L=L) The fan speed is controlled by T4 and L-(L-=L-D) compressor frequency.
  • Page 40 The auto fan acts as below rules: 10.4.3.1 Compressor running rules When T1-Ts>ΔT, the compressor will T1-TS stop, when T1-T <ΔT-1，the compressor will be on. ΔT is the programmed parameter of temperature compensation. When the AC run in mute mode, the compressor will run with low frequency.
  • Page 41 outdoor motor will stop, defrost lamp of 10.4.3.3 Indoor fan running rules When the compressor is on, the indoor the indoor unit will be lighted “ .” will fan can be set to be displayed. high/med/low/auto/mute. If any one of the following items is When indoor unit coil temperature is low, satisfied, the defrosting will finish and the anti-cold air function will start and...
  • Page 42 When evaporator temperature is more will turn to auto mode with 24℃ setting than the setting protection value, the temperature. compressor will stop. Forced auto mode: The action of forced auto mode is the 10.4.4 Auto-mode same as normal auto mode with 24℃ This mode can be chosen with remote setting temperature.
  • Page 43 If the memorization condition is forced sent from remote controller every 3 cooling mode, the unit will run in cooling minutes, the buzzer will not respond. mode for 30 minutes and turn to auto When the unit is running with follow me mode as 24℃...
  • Page 44 For AE series，On-off port, XYE port, WIFI， wired controller(5-cored) can be chosen at the same time. Non-polar wired controller,4-cored wired controller, and central controller are mutually exclusive.
  • Page 45 10.4.15 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds. The air conditioner will enter into the information enquiry status.
  • Page 46 Reserve Reserve When the AC enter into the information enquiry status, it will display the code value in the next 25s, the details are as follows. Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. All the displaying temperature is actual T2B,TP,TH, 1b,-1A value.

  • Page 47: Multi-Function Board Instruction (This Multi-Function Board Is Optional)

    10.5 Multi-function board instruction (This multi-function board is optional) 10.5.1. Function The multi-function board receives the signal of 4-cored wired controller(central controller),Non-polar wired controller and CP remote on-off signal( ON-OFF command signal). Then converting it to the communication signal to the main control board. The multi-function board can output Alarm signal.
  • Page 48 Note: The network address are the Dip-switch F1 address plus Rotary switch ENC3 address. 10.5.4.2 If it receives the network address set by remote controller, the network address will be changed .If it receives the cancel signal of network address set by remote controller, the network address will be disposed according to the setting of Dip-switch F1 and Rotary switch ENC3.
  • Page 49 10.5.7.2 Connected to Non-poplar wired controller Note: It must use shield cables to connect with Non-poplar wired controller. The length should not exceed 5...

  • Page 50: Troubleshooting

    11. Troubleshooting Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

  • Page 51: Indoor Unit Error Display

    11.1 Indoor Unit Error Display Operation Timer Display LED STATUS lamp lamp ☆ 1 time Indoor unit EEPROM parameter error ☆ 2 times Indoor / outdoor units communication error ☆ 4 times Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit ☆...

  • Page 52: Trouble Shooting

    11.2 Trouble shooting 11.2.1 EEPROM parameter error diagnosis and solution(E0/F4) E0/F4 Error Code Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes Installation mistake ● PCB faulty ● Trouble shooting: Power off, then restart the unit 2 minutes later.
  • Page 53 11.2.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code Malfunction decision Indoor unit does not receive the feedback from outdoor unit during conditions seconds and this condition happens four times continuously. Supposed causes Wiring mistake ● Indoor or outdoor PCB faulty ●...
  • Page 54 Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is normal running, voltage is moving alternately as positive values and negative values If the outdoor unit has malfunction,...
  • Page 55 11.2.4 Fan speed has been out of control diagnosis and solution (E3) E3/F5 Error Code Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, conditions the unit will stop and the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 56 Index1: 1:Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced.
  • Page 57 11.2.4 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code Malfunction decision Define the evaporator coil temperatureT2 of the compressor just conditions starts running as Tcool. In the beginning 8 minutes after the compressor starts up, if T2 ＜ Tcool － 2 ℃ does not keep continuous 4 seconds and compressor running frequency higher than 50Hz does not keep continuous 3 minutes, and this situation happens 3 times, the display area will show “EC”...
  • Page 58 11.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution (E4/E5/F1/F2/F3) E4/E5/F1/F2/F3 Error Code Malfunction decision If the sampling voltage is lower than 0.06V or higher than 4.94V, conditions the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 59 11.2.6 Overload current protection diagnosis and solution(F0) Error Code Malfunction decision An abnormal current rise is detected by checking the specified conditions current detection circuit. Supposed causes Power supply problems. ● System blockage ● PCB faulty ● Wiring mistake ● Compressor malfunction ●...
  • Page 60 11.2.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0) Error Code Malfunction decision When the voltage signal that IPM send to compressor drive chip conditions is abnormal, the display LED will show “P0” and AC will turn off. Supposed causes Wiring mistake ●...
  • Page 61 Ø IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red...
  • Page 62 11.2.8 Over voltage or too low voltage protection diagnosis and solution(P1) Error Code Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes Power supply problems. ● System leakage or block ●...
  • Page 63 11.2.9 High temperature protection of IPM module diagnosis and solution (P2) Error Code Malfunction decision If the temperature of IPM module is higher than limited value, the conditions LED will display the failure. Supposed causes IPM radiator problem ● PCB faulty ●...
  • Page 64 11.2.10 Inverter compressor drive error diagnosis and solution(P4) Error Code Malfunction decision An abnormal inverter compressor drive is detected by a special conditions detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Supposed causes Wiring mistake ●...
  • Page 65 11.2.11 Indoor PCB /Display board communication error (E7) Error Code Malfunction decision Indoor PCB does not receive feedback from Display board. conditions Supposed causes Wiring mistake ● PCB faulty ● Display board malfunction ● Trouble shooting: Power off, then restart the unit 2 minutes later.Is it still displaying the error code? Check the wirings...
  • Page 66 Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temperature(T1) sensor, Indoor coil temperature(T2) sensor, Outdoor coil temperature(T3) sensor, Outdoor ambient temperature(T4) sensor, Compressor discharge temperature(TP) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 67 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865...
  • Page 68 Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5...

  • Page 69: Compressor Checking

    2.Compressor checking Measure the resistance value of each winding by using the tester. T1,T2,T3,T Position Resistance Value KSN98D22UFZ KSM135D23UFZ KTF235D22UMT Blue - Blue - 1.57Ω 1.72Ω 0.75Ω Black (20℃/68℉) (20℃/68℉) (20℃/68℉) Red - Blue...
  • Page 72 AIR CONDITIONING SYSTEMS WALL MOUNTED UNIT Scan here to download the latest version of this manual. Σαρώστε εδώ για να κατεβάσετε την τελευταία έκδοση του εγχειριδίου.

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