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Pioneer YN020GMFI22M2D Service Manual

Pioneer YN020GMFI22M2D Manual Online:

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Pioneer YN020GMFI22M2D User Manual
Pioneer YN020GMFI22M2D User Guide
Pioneer YN020GMFI22M2D Online Manual

Text of Pioneer YN020GMFI22M2D User Guide:

  • Pioneer YN020GMFI22M2D, 8.4.2.2 E2(Communication malfunction between indoor and outdoor units) diagnosis and solution. Error Code E2 Malfunction decision conditions Indoor unit does not receive the feedback from outdoor unit during 120 seconds or outdoor unit does not receive the feedback from any one indoor unit during 180 seconds. Supposed causes ● Wiring mistake ● Indoor or outdoor PCB faulty Trouble shooting:

  • Pioneer YN020GMFI22M2D, 123 2 Panel plate How to remove the panel plate. 4) Remov e big handle.(2 screws) and water collector(2 s crews) 5) Remov e 2 screws of terminal board and 15 screws of right-rear panel, and remove the right-rear panel. 3 Electrical parts How to remove the electrical parts. 1) P erform work of item 1 step 5~6 and item 2. IPM board PCB board Screws of Water collector Screws of big handle Screws of right- rear panel Screws of terminal board Screws of right- rear panel

  • Pioneer YN020GMFI22M2D, 8. Troubleshooting 8.1Safety Because there are high power capacitors on PCB and related circuits in outdoor unit, even after shutting down the power supply, risk of electrocution still exists. Do not forget to discharge the electrical power in these capacitors. Use a 25~40 W bulb or resistor with resistance value of about 1500 ohm to 2000 ohm to discharge the power in the capacitors. . Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) The voltage in P3 and P4 in outdoor PCB is high voltage about 310V The voltage

  • Pioneer YN020GMFI22M2D, 114 7 The expansion valve How to remove the expansion valve 1) Perform work of item 1,2. 2) Remove the electrical p arts from item 3. 3) Remove the coils. 4) D etach the welded parts of expansion valves and pipes.  QUAD (4 ZONE) OUTDOOR UNIT (WD30 metal plate) No . Part name Procedures Remarks 1 Panel plate How to remove the panel plate. 1) Turn off the air conditioner. Turn off the power breaker. 2) Remov e the screws of big handle, and remove the big handle.(4 screws) 3) Remove the screws of t op cover, and remove

  • Pioneer YN020GMFI22M2D, For All 2016 and newer Models: Wall Mount, Concealed Duct / Cassette / Floor Console / Floor Ceiling): 1) Wall Mounted: WS009GMF I22HLD, WS012GMFI22HLD, WS018GMFI22HLD, WS024GMFI22HLD. 2) C eiling Concealed: RB009GMFI LDFHD, RB012GMFILDFHD, RB018GMFILDFHD, RB024GMFILDFHD. 3) Cassette: CB009GMFI LDFHD, CB012GMFILDFHD, CB018GMFILDFHD, CB024GMFILDFHD. 4) Floor Console: FB009GMFI LDFHD, FB012GMFILDFHD. 5) Floor / Ceiling: UB018GMFI LDFHD, UB024GMFILDFHD. Operation lamp Timer lamp Display LED STATUS ODU Error ★ 1 time X E0 Indoor unit EEPROM pa

  • Pioneer YN020GMFI22M2D, 103 CN17:T3/T4 temperature sensor (2p/2p,white) CN7: Discharge temperature sensor (2p,white) CN15:T2B-A,B temperature sensor (2p/2p,white) CN18/CN19: Electronic expansive valve A,B (6p/6p,red/red) CN25/CN23: S-A,S-B (3p/3p,white/white) Wires: CN1/CN2: 4-way valve (blue-blue) CN5/CN6: Crankcase heating cable (red-red) CN3:L-IN (red) CN4:N-IN (black) 8) Disconnect the grounding wire (yellow-green) after removi ng the big h andle and the right -rear panel. 9) Remo ve the PCB board. ⑧ CN17 CN7 CN15 CN1/CN2 CN5/CN6 CN3 CN4 CN18/CN19 CN25/CN23

  • Pioneer YN020GMFI22M2D, 122 6) Remove the screws of front side panel, and remove the f ront side pa nel (1 screw) 7) Disconnect t he fan motor connectors FAN1(3p,wh ite) and FAN2(3p,white) from DC motor driver board. 8) Remov e the fan motor after unfastening fixing screws. ⑧ ⑦ ⑥

  • Pioneer YN020GMFI22M2D, 100 cover. (3 screws) 6) Remov e the cover of electrica l con trol box. 7) Disconnect t he fan motor connector C N 14(3p,white) from the IPM board. 8) Remov e the fan motor after unfastening four fixing screws. 2 Panel plate How to remove the panel plate. 1) Remove the screws of fr ont panel, and r e move the front panel. (6 screws) Screws of front panel Screws of front panel ⑧ ⑦

  • Pioneer YN020GMFI22M2D, 8.4 Diagnosis and Solution 8.4.1 Indoor unit trouble shooting 8.4.1.1 Indoor unit EEPROM parameter error diagnosis and solution. Malfunction decision conditions PCB main chip does not receive feedback from EEPROM chip ● Installation mistake ● PCB faulty Trouble shooting: Supposed causes EEPROM: aread‐onlymemorywhosecontentscanbeerasedandreprogrammedusingapulsedvoltage.

  • Pioneer YN020GMFI22M2D, 8.4.2.15 The cooling operation or heating operation does not operate. Supposed causes ● 4-way valve faulty Check of 4-way valve, please refer to part 5 in 9.5 Trouble Criterion of Main Parts. 8.4.2.16 When cooling, heat exchanger of non-operating indoor unit frosts. When heating, non-operating indoor unit get warm. Supposed causes ● EXV faulty ● Wire and tubing connected in reverse. Check of EXV, please refer to part 6 in 9.5 Trouble Criterion of Main Parts. 8.5 Trouble Criteri

  • Pioneer YN020GMFI22M2D, 3. 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 (-)Black ∞ (Several MΩ) (+)Red (-)Black ∞ (Several MΩ) P N U N U V V W W (+)Red 4. AC Fan Motor. Measure the resistance value of each winding by using the tester. Position Resistance Value RPG20B RPG28H Black - Red 381Ω±8% (20℃) (Brand: Weiling) 342Ω±8% (20℃) (Brand: Dayang) 183.6Ω±8%

  • 8.4.1.8 Compressor top high temperature protection (OLP) diagnosis and solution. Malfunction decision conditions If the sampling voltage is not 5V, the LED will display the failure. Supposed causes ● Wiring mistake ● Over load protector faulty ● System block ● Outdoor PCB faulty

  • Pioneer YN020GMFI22M2D, Pic 1: Use a multimeter to test the DC voltage between 2 (previously: L2) port and S port of outdoor unit. The red pin of multimeter connects with 2 (previously: L2) port while the black pin is for S port. (Set the multimeter to read DC volts When AC is normal running, the voltage will move alternately between positive value and negative value.

  • 109 2 Fan assembly How to remove the fan assembly. 1) Remov e the top cover, right front side panel an d front panel f rom item 1.step 1~4 2) Remov e the hex nut fixing the fan. 3) Remov e the fan. 4) Remov e the cover of electrica l con trol box cover. 5) Disconnect t he fan motor connector C N 14(5p,white) from the IPM board. 6) Remove the fan motor after unfastening four

  • 4.3 Refrigeration circuit drawing of inverter Quad(4Zone) LIQUID VALVE A GAS VALVE A HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) Compressor 4-WAY VALVE COOLING HEATING T2 Evaporator temp. sensor middle T1 Room temp. sensor T3 Condenser temp. sensor T5 Discharge temp. sensor T4 Ambient temp. sensor INDOOR OUTDOOR EXV A CAPILIARY A CHECK VALVE CAPILIARY TUBE EXV

  • Pioneer YN020GMFI22M2D, 8.4.2.9 P1 (High pressure protection) diagnosis and solution. Error Code P1 Malfunction decision conditions If the sampling voltage is not 5V, the LED will display the failure. Supposed causes ● Wiring mistake ● Over load protector faulty ● System block ● Outdoor PCB faulty Trouble shooting:

  • Pioneer YN020GMFI22M2D, For 2015 or earlier Wall Mount Models WB009GMFI16HLD, WB012GMFI16HLD, WB018GMFI16HLD (2015 and earlier) De-frost Time r Auto O p eratio Failure Dis p la y     Indoor unit EEPROM parameter error E0 ★ ★ ★ ★ Communication malfunction between indoor and outdoor units error E1   ★ ★ Zero-crossing signal detection error E2   ★ ★ Indoor fan speed has been out of control E3 X  X ★ Outdoor temperature sensor(coil sensor T3 or ambient temperature sensor T4) malfunction or Outdoor unit EEPROM parameter error sensor E5    ★ Indoor room tempera

  • Pioneer YN020GMFI22M2D, 119 CN10/CN44: Crankcase heating cable (black-red) CN1:L1-IN (red) CN2:L2-IN (black) 8) Disconnect the grounding wire (yellow-green) after removi ng the right-r ear panel. 9) Remo ve the PCB board. 4 Compressor How to remove the compressor. 1) Perform work of item 1,2,3. 2) Remove the electrical control box and partition plate. 3) Extract refrigerant gas. 4) Remov e the sound insulation m a terial and crankcase heating cable. 5) Remov e terminal cover of compressor, and disconnect wires of compressor thermo and com pressor from the terminal. ⑦ ⑧ CN13 CN33 CN3 CN4 CN10 CN22 CN40 CN44 CN2 CN1

  • Pioneer YN020GMFI22M2D, CONTENTS 1. IndoorUnitCombination..........................................................................................................................................3 2. DimensionOfOutdoorUnit......................................................................................................................................4 3. RefrigerantCycleDiagram........................................................................................................................................5

  • Pioneer YN020GMFI22M2D, 8.3.2 Outdoor unit’s digital display LED will display the following information except in the checking mode as described above:  In standby , the LED displays “- -”  During the compressor is operating, the LED display the running frequen cy,  In defrosting mode, The LED displays “dF” or alternatively displays between running frequency and “dF” (each displays 0.5s)  During compressor pre-heating, The LED displays “PH” or alternatively displays between running freq uency and “PH” (each displays 0.5s)  During the oil return process, The LED disp

  • Pioneer YN020GMFI22M2D, 8.4.2.6 E6 (PFC module protection) error diagnosis and solution. Error Code E6 Malfunction decision conditions When the voltage signal that PFC sends to main control board is abnormal, the display LED will show “E6” and AC will turn off. Supposed causes ● Wiring mistake ● Outdoor PCB faulty ● Inductance of PFC module faulty ● PFC module malfunction Trouble shooting: PFC module protection Check whether the connecting line between main board and the PFC module is connected tightly Yes Check whether the voltage range of P-N on IPM module is normal? DC277- 356V for 18-27KBtu/h; D

  • Pioneer YN020GMFI22M2D, 124 2) Disconnect t he fan motor Connector(5p,white) from the IPM board. 3) Disconnect f ollowing 8 pieces of connection wire s and connectors between IPM and other parts. CN2(yellow) CN1(red) CN6(black) CN 3(yellow) U、V、W(black) CN9(10p,white) 4) Remove the fixing screws then remove the IPM board. 5) Disconnect the connectors and wires connected from PCB and other parts. Connectors: CN8: Discharge temperature sensor DC Fan Driver board

  • Pioneer YN020GMFI22M2D, 8.2 Indoor Unit Error Display For 2015 or earlier Floor Console Models FB012GMFI16HLD (2015 or earlier) Operation Timer De-frost Failure ★ X X Indoor room temperature sensor (T1 ) malfunction X X ★ Evaporator coil temperature sensor (T2) malfunction X ★ X Communication malfunction between indoor and outdoor units  ★ X Low ambient temperature cut off in heating ★ ★ X Indoor unit EEPROM parameter error X ★  Outdoor fan speed has been out of control ★ X ★ Inverter module (IPM) malfunction �

  • Pioneer YN020GMFI22M2D, b. If servicing a 3, 4 or 5 zone system, connect only the low pressure hose on your gauge manifold (usually blue) to the 3 way (Gas) valve’s service port, belonging to the COMMON or the MASTER Circuit. Fully open the Low side valve on the low pressure side of your gauge manifold only. See below drawing. 6. Connect the center hose of the gauge manifold (usually yellow) to the vacuum pump. 7. Start the vacuum pump and operate according to pump manufacturer’s specifications. 8. Perform vacuuming/evacuation for a minimum total period of 30 minutes for each

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