York YU2E14YEEBMHO-X Service Manual
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York YU2E14YEEBMHO-X Service Manual

Multi inverter r-410a 50hz heat pump
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Multi Inverter Outdoor
Form: MMULIT50-191127
Service Manual
New Released
Multi Inverter R-410A 50Hz Heat Pump
YU2E14YEEBMHO-X
YU2E18YEEBMHO-X
YU3E21YEEBMHO-X
YU3E27YEEBMHO-X
YU4E28YEEBMHO-X
YU4E36YEEBMHO-X
YU5E42YEEBMHO-X
Issue Date
Nov 27, 2019

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Summary of Contents for York YU2E14YEEBMHO-X

  • Page 1 Multi Inverter Outdoor Form: MMULIT50-191127 Service Manual New Released Multi Inverter R-410A 50Hz Heat Pump YU2E14YEEBMHO-X YU2E18YEEBMHO-X YU3E21YEEBMHO-X YU3E27YEEBMHO-X YU4E28YEEBMHO-X YU4E36YEEBMHO-X YU5E42YEEBMHO-X Issue Date Nov 27, 2019...

  • Page 2: Table Of Contents

    CONTENTS 1. General information of Outdoor Units .......... 2 2. Features ..................3 3. Dimensions ..................4 4. Refrigeration Cycle Diagram ............5 5. Wiring diagram ................7 6. Indoor units combination ............12 7. Sound Levels ................14 8. Installation Details ............... 15 9.

  • Page 3: General Information Of Outdoor Units

    General information of Outdoor Units Model name Dimension (mm) Compressor YU2E14YEEBMHO-X 800x333x554 KSN140D21UFZ YU2E18YEEBMHO-X ASM135D23UFZ 800x333x554 YU3E21YEEBMHO-X ASM135D23UFZ 845x363x702 YU3E27YEEBMHO-X ATF235D22UMT 845x363x702 YU4E28YEEBMHO-X ATF235D22UMT 946x410x810 YU4E36YEEBMHO-X ATF310D43UMT 946x410x810 YU5E42YEEBMHO-X ATF310D43UMT 946x410x810...

  • Page 4: Features

    Features Outdoor unit Power relay control Low noise air flow system Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. Anti-rust cabinet Valve protection cover It protects the valves and prevents water from dripping.

  • Page 5: Dimensions

    Dimensions Unit：mm Model YU2E14YEEBMHO-X YU2E18YEEBMHO-X YU3E21YEEBMHO-X YU3E27YEEBMHO-X YU4E28YEEBMHO-X 1034 YU4E36YEEBMHO-X 1034 YU5E42YEEBMHO-X 1034...

  • Page 6: Refrigeration Cycle Diagram

    Refrigeration Cycle Diagram Refrigeration circuit drawing of inverter 1 drive 2 type INDOOR OUTDOOR EXV A CAPILLARY A LIQUID VALVE A CHECK VALVE EXV B CAPILLARY B LIQUID VALVE B Condenser temp. sensor CAPILLARY TUBE HEAT HEAT EXCHANGE T4 Ambient T1 Room EXCHANGE (EVAPORATOR)
  • Page 7 4.3 Refrigeration circuit drawing of inverter 1 drive 4 type INDOOR OUTDOOR EXV A CAPILLARY A LIQUID VALVE A EXV B CAPILLARY B LIQUID VALVE B CHECK VALVE EXV C CAPILLARY C LIQUID VALVE C Condenser temp. sensor EXV D CAPILLARY D CAPILLARY TUBE LIQUID VALVE D HEAT...

  • Page 8: Wiring Diagram

    Wiring diagram YU2E14YEEBMHO-X, YU2E18YEEBMHO-X...
  • Page 9 Note: S(1)&S(2) are used in other type of models. They don't need to be connected in multi models. YU3E21YEEBMHO-X, YU3E27YEEBMHO-X...
  • Page 11 YU4E28YEEBMHO-X YU4E36YEEBMHO-X...
  • Page 12 YU5E42YEEBMHO-X...

  • Page 13: Indoor Units Combination

    Indoor units combination Indoor unit combination for YU2E14YEEBMHO-X One unit Two unit 9+12 7+12 Indoor unit combination for YU2E18YEEBMHO-X One unit Two unit 9+12 7+12 12+12 Indoor unit combination for YU3E21YEEBMHO-X One unit Two unit Three unit 7+7+7 7+9+9 9+12...
  • Page 14 Indoor unit combination for YU4E36YEEBMHO-X One unit Two unit Three unit Four unit 9+18 7+7+7 7+9+12 7+18+18 9+12+18 7+7+7+7 7+7+9+12 7+9+9+12 9+9+9+12 9+24 7+7+9 7+9+18 9+9+9 9+12+24 7+7+7+9 7+7+9+18 7+9+9+18 9+9+9+18 7+12 12+12 7+7+12 7+9+24 9+9+12 9+18+18 7+7+7+12 7+7+12+12 7+9+12+12 9+9+12+12 7+18 12+18 7+7+18 7+12+12 9+9+18...

  • Page 15: Sound Levels

    Sound Levels Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise Power dB(A) Noise level dB(A) YU2E14YEEBMHO-X YU2E18YEEBMHO-X 56.5 YU3E21YEEBMHO-X 57.5 YU3E27YEEBMHO-X 59.5 YU4E28YEEBMHO-X YU4E36YEEBMHO-X 63.5 YU5E42YEEBMHO-X...

  • Page 16: Installation Details

    Installation Details 8.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque 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) 8.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Rated current of appliance Nominal cross-sectional area (mm²) >3 and ≤6...
  • Page 17 ● When refrigerant pipe diameter is different from that of outdoor unit union (for 18K&24K indoor unit), additional transfer connector needs to be used on outdoor unit union. Indoor unit Extension pipe diameter (mm/inch) Model Pipe diameter (mm/inch) Liquid 6.35(1/4) Liquid 6.35(1/4) 7K9K12K...
  • Page 18 (Indoor unit) (Outdoor unit) (Liquid side) Two-way valve Close (Gas side) Three-way valve Close Manifold valve Compound meter Pressure gauge -0.1MPa Handle Lo Handle Hi Charge hose Charge hose Vacuum pump Vacuum pump 1) Completely tighten the flare nuts of the indoor and outdoor units, confirm that both the 2-way and 3-way valves are set to the closed position.
  • Page 19 2. Air purging by refrigerant Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve. 3). Air purging. Open the valves on the charging cylinder and the charge set.
  • Page 20 3. Adding the refrigerant if the pipe length >5m Electronic scale Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.
  • Page 21 8.5 Adding the refrigerant after running the system for many years Electronic scale Procedure: 1). Connect the charge hose to the 3-way service port, open the 2-way valve and the 3-way valve. Connect the charge hose to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge.
  • Page 22 8.6 Re-installation while the indoor unit need to be repaired 1. Collecting the refrigerant into the outdoor unit 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 that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems.
  • Page 23 2. Air purging by the refrigerant Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve Leave the valve on the charging cylinder closed. 3).
  • Page 24 8.7 Re-installation while the outdoor unit need to be repaired 1. Evacuation for the whole system Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the opened position. 2). Connect the vacuum pump to 3-way valve’s service port. 3).
  • Page 25 2. Refrigerant charging Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.

  • Page 26: Electronic Control Function

    Electronic control function 9.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Coil temperature of indoor heat exchanger outlet(This sensor is located in outdoor unit) T3: Coil temperature of outdoor heat exchanger T4: Outdoor ambient temperature T5: Compressor discharge temperature Ts: Setting temperature 9.2 Electric control working environment.
  • Page 27 9.4 Outdoor unit point check function There is a check switch in outdoor PCB. Press the switch N times it will display the content corresponding to No. N. After getting into the check function, it will display No. N with 1.5s, meanwhile the low bit decimal of digit display flashing, indicated to get into the check function display.
  • Page 28 show “0.5”,it means the compressor discharge temperature is 105 degree.) AD value of current The display value is hex number. For example ,the digital display tube show “Cd”, it means AD value AD value of voltage is 205. EXV open angle for A indoor unit Actual data/4.
  • Page 29 V O L T A G E N o lim it V O L T _ LT M _ F R E Q 1_ A D D V O L T _ LT M _ F R E Q 2_ A D D Note: if the low voltage protection occurs and not resumes within 3min, it will keep the protection always after restart the machine.
  • Page 30 Decrease Hold Resume 9.5.7 Outdoor unit anti-freezing protection When T2<4℃ for 250 seconds or T2<0℃, the indoor unit capacity demand will be zero and resume to normal when T2>8℃ and the time of protection is no less than 3 minutes. 9.5.8 Oil return Running rules: 1.

  • Page 31: 10. Troubleshooting

    10. Troubleshooting Indoor unit error code explanation: 10.1 Operation Lamp Malfunction Timer Lamp Error Code (flashes) Indoor EEPROM malfunction Communication malfunction between indoor and outdoor units Indoor fan speed has been out of control Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Water level alarm Overcurrent protection (For some units)
  • Page 32 No A Indoor unit coil outlet temperature sensor or connector of sensor is defective No B Indoor unit coil outlet temperature sensor or connector of sensor is defective No C Indoor unit coil outlet temperature sensor or connector of sensor is defective No D Indoor unit coil outlet temperature sensor or connector of sensor is defective No E Indoor unit coil outlet temperature sensor or connector of sensor is defective High pressure protection (ForYU4E28YEEBMHO-X, YU4E36YEEBMHO-X, YU5E42YEEBMHO-X)
  • Page 33 Trouble shooting 10.3 10.3.1 For the indoor unit 10.3.1.1 Indoor EEPROM parameter error EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
  • Page 34 10.3.1.2 Indoor / outdoor units communication error...
  • Page 35 Pic 1: check the voltage of N to S (Vs), is it moving alternately between positive value and negative value? Pic 2:IPM or outdoor main PCB Operating Self-Check Pic 2: IPM or outdoor main PCB Power, Self-Check Operating...
  • Page 36 PIC3 :Main board LED when power on and unit standby. PIC 4: check point button, Press 1 time for check how many indoor units are connected...
  • Page 37 10.3.1.3 indoor unit fan speed has been out of control Index 1: 1: Indoor AC fan motor Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply)or 50V(115V power supply), the PCB must have problems and need to be replaced.
  • Page 38 For console: DC motor voltage input and output For split type: Color Signal Voltage Vs/Vm 280V~380V Black White 14-17.5V Yellow 0~5.6V Blue 14-17.5V For other types: Color Signal Voltage Vs/Vm 192V~380V Black White 13.5-16.5V Yellow 0~6.5V Blue 13.5-16.5V...
  • Page 39 10.3.1.4 Open or short circuit of temperature sensor. 10.3.1.5 Full-water malfunction...
  • Page 40 10.3.2 For the super-slim cassette with up-down panel 10.3.2.1 Communication error between indoor unit and up-down panel 10.3.2.2 Up-down panel is defective F8 Displayed Up-down panel is defective If panel can not move, check the wiring of the Retry. Can the panel move louver motors.
  • Page 41 10.3.3 For the outdoor unit 10.3.3.1 Outdoor EEPROM parameter error(ODU E0) EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
  • Page 42 10.3.3.2 Communication malfunction between IPM board and outdoor main board(ODU E3)
  • Page 43 10.3.3.3 Voltage protection(ODU E5) Voltage protection Check the voltage of outdoor unit power supply, whether the voltage Check the power supply between L(L1) and N (L2) is about 220~240VAC Check whether the voltage of IPM board P and N is normal? DC277-356V for 18-27KBtu/h;...
  • Page 44 10.3.3.4 Outdoor unit fan speed has been out of control (E8) Index 1: 1. Outdoor DC fan motor(control chip is inside fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector.
  • Page 45 10.3.3.5 High pressure protection (ODU P1)(ForYU4E28YEEBMHO-X, YU4E36YEEBMHO-X, YU5E42YEEBMHO-X)
  • Page 46 10.3.3.6 Low pressure protection (ODU P2)(ForYU4E28YEEBMHO-X, YU4E36YEEBMHO-X, YU5E42YEEBMHO-X) Low pressure protection Whether the wiring between the low pressure protector and main control Connect it well board is connected well or correctly Whether the low pressure protector is broken Method: Disconnect the plug. Measure the resistance of the low pressure protector.
  • Page 47 10.3.3.7 Current protection of compressor (ODU P3)
  • Page 48 10.3.3.8 Temperature protection of compressor discharge (ODU P4)
  • Page 49 10.3.3.9 High temperature protection of condenser (ODU P5) When outdoor pipe temperature is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temperature less than 52°C. Check the connection between temperature Correct the connection High temperature protection of sensor and PCB.
  • Page 50 10.3.3.10 IPM module protection (ODU P6) IPM module protection Check whether the voltage range Check whether the input Regulate it to correct, then of P-N on IPM module is normal? power supply is correct? check whether the system DC277-356V for 18-28KBtu/h; 208-230V, 1N, 60Hz can work normally? DC277-410V for 36-42KBtu/h...
  • Page 51 Potential causes ● Faulty 4-way valve Check of 4-way, please refer to part 5 in 10.4 Trouble Criterion Of Main Parts. 10.3.3.12 When cooling, heat exchanger of non-operating indoor unit frosts. When heating, non-operating indoor unit get warm. Potential causes ●...
  • Page 52 10.4 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(T5) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 53 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4,T2B (℃--K) ℃ ℃ ℃ ℃ K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5000 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.2190...
  • Page 54 Appendix 2 Temperature Sensor Resistance Value Table for T5 (℃--K) ℃ K Ohm ℃ K Ohm ℃ K Ohm ℃ 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 57.37 11.79 3.296 406.7 54.89...
  • Page 55 2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASN108D22UEZ ASM135D23UFZ ATF235D22UMT ATF310D43UMT Blue - 1.57Ω(20℃) 1.75Ω(20℃) 0.75Ω(20℃) 0.65Ω(20℃)
  • Page 56 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...
  • Page 57 5.4-way valve 1. Power on, use a digital tester to measure the voltage, when the unit operates in cooling, it is 0V. When the unit operates in heating, it is about 230VAC. If the value of the voltage is not in the range, the PCB must have problems and need to be replaced. 2 Turn off the power, use a digital tester to measure the resistance.
  • Page 58 6.EXV check Disconnect the connectors. Red Brown Blue Orange Yellow White Resistance to EXV coil Color of lead wire Normal Value Red- Blue Red - Yellow About 50Ω Brown-Orange...
  • Page 59 2019 Johnson Controls, Inc. www.johnsoncontrols.com Form: MMULTI50-191127 Johnson Controls reserve the right to change product features without prior notice.

This manual is also suitable for:

Yu2e18yeebmho-xYu3e21yeebmho-xYu3e27yeebmho-xYu4e28yeebmho-xYu4e36yeebmho-xYu5e42yeebmho-x

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