Gree MUL18HP230V1R32AO Service Manual
  1. Manuals
  2. Brands
  3. Gree Manuals
  4. Air Conditioner
  5. MUL18HP230V1R32AO
  6. Service manual

Gree MUL18HP230V1R32AO Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Change for life
Service Manual
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MUL18HP230V1R32AO and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Gree MUL18HP230V1R32AO

Summary of Contents for Gree MUL18HP230V1R32AO

  • Page 1 Change for life Service Manual GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...

  • Page 2: Table Of Contents

    Table of Contents Service Manual Part I : Technical Information ............1 1. Summary .......................1 2. Specifications ....................2 3. Outline Dimension Diagram .............12 4. Refrigerant System Diagram ..........14 5. Electrical Part ....................18 5.1 Wiring Diagram .......................18 5.2 PCB Printed Diagram ....................22 6.
  • Page 3 Service Manual Appendix ........................88 Appendix 1: Reference Sheet of Celsius and Fahrenheit .......88 Appendix 2: Pipe Expanding Method ..............89 Appendix 3: List of Resistance for Temperature Sensor ........90 Symbol Explanation This symbol shows that this appliance uses a flammable refrigerant. If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire.

  • Page 4: Part I : Technical Information

    1. Summary Service Manual Model: MUL18HP230V1R32AO MUL24HP230V1R32AO MUL30HP230V1R32AO MUL36HP230V1R32AO MUL42HP230V1R32AO Model list: Model Product code MUL18HP230V1R32AO CB228W20700 MUL24HP230V1R32AO CB228W20600 MUL30HP230V1R32AO CB228W20800 MUL36HP230V1R32AO CB228W20900 MUL42HP230V1R32AO CB228W21000 Technical Information...

  • Page 5: Specifications

    2. Specifications Service Manual MUL18HP230V1R32AO Model Product Code CB228W20700 208/230 Power Supply Cross-sectional Area of Power Cable Conductor 3G2.1(AWG14) Cooling Capacity Btu/h 18000 Heating Capacity Btu/h 18000 Cooling Power Input Heating Power Input 1.35 Cooling Current Input 6.08 Heating Current Input...
  • Page 6 Service Manual Dimension(WXHXD) inch 32 23/64X21 21/32X13 55/64 Dimension of Carton Box (LXWXH) inch 34 7/32X15 35/64X23 25/64 Dimension of Package(LXWXH) inch 34 21/64X15 43/64X24 13/32 Net Weight Gross Weight 81.6 Refrigerant Refrigerant Charge 31.8 Not Additional Gas Connection Pipe Length 32.81 Connection Pipe Gas Additional Charge oz/ft.
  • Page 7 Service Manual MUL24HP230V1R32AO Model Product Code CB228W20600 208/230 Power Supply Cross-sectional Area of Power Cable Conductor 3G3.3(AWG12) Cooling Capacity Btu/h 24000 Heating Capacity Btu/h 24000 Cooling Power Input 1.85 Heating Power Input Cooling Current Input Heating Current Input Rated Input Rated Current 14/14.8 Air Flow Volume...
  • Page 8 Service Manual Dimension(WXHXD) inch 37 61/64X25 63/64X15 53/64 Dimension of Carton Box (LXWXH) inch 40 33/64X17 53/64X28 5/32 Dimension of Package(LXWXH) inch 40 5/8X17 61/64X29 1/64 Net Weight 112.5 Gross Weight 122.4 Refrigerant Refrigerant Charge 59.976 Not Additional Gas Connection Pipe Length 98.42 Connection Pipe Gas Additional Charge oz/ft.
  • Page 9 Service Manual MUL30HP230V1R32AO Model Product Code CB228W20800 208/230 Power Supply Cross-sectional Area of Power Cable Conductor 3G5.3(AWG10) Cooling Capacity Btu/h 28400 Heating Capacity Btu/h 30000 Cooling Power Input 2.075 Heating Power Input Cooling Current Input Heating Current Input 9.56 Rated Input Rated Current 20/21.73 Air Flow Volume...
  • Page 10 Service Manual Dimension(WXHXD) inch 40 5/32 X 32 33/64 X 16 13/16 Dimension of Carton Box (LXWXH) inch 42 29/32 X 19 29/64 X 34 1/4 Dimension of Package(LXWXH) inch 43 1/32 X 19 9/16 X 34 27/32 Net Weight 145.5 Gross Weight Refrigerant...
  • Page 11 Service Manual MUL36HP230V1R32AO Model Product Code CB228W20900 208/230 Power Supply Cross-sectional Area of Power Cable Conductor 3G5.3(AWG10) Cooling Capacity Btu/h 36000 Heating Capacity Btu/h 36000 Cooling Power Input Heating Power Input 2.96 Cooling Current Input 13.04 Heating Current Input 12.87 Rated Input Rated Current 21.73/22.6...
  • Page 12 Service Manual Dimension(WXHXD) inch 40 5/32 X 32 33/64 X 16 13/16 Dimension of Carton Box (LXWXH) inch 42 29/32 X 19 29/64 X 34 1/4 Dimension of Package(LXWXH) inch 43 1/32 X 19 9/16 X 34 27/32 Net Weight 176.4 Gross Weight 189.6...
  • Page 13 Service Manual MUL42HP230V1R32AO Model Product Code CB228W21000 208/230 Power Supply Cross-sectional Area of Power Cable Conductor 3G5.3(AWG10) Cooling Capacity Btu/h 42000 Heating Capacity Btu/h 42000 Cooling Power Input Heating Power Input 3.15 Cooling Current Input 13.47 Heating Current Input 13.7 Rated Input Rated Current 21.73/22.6...
  • Page 14 Service Manual Dimension(WXHXD) inch 40 5/32 X 32 33/64 X 16 13/16 Dimension of Carton Box (LXWXH) inch 42 29/32 X 19 29/64 X 34 1/4 Dimension of Package(LXWXH) inch 43 1/32 X 19 9/16 X 34 27/32 Net Weight 178.6 Gross Weight 191.8...

  • Page 15: Outline Dimension Diagram

    3. Outline Dimension Diagram Service Manual MUL18HP230V1R32AO 29 21/64 11 13/16 13 55/64 32 23/64 Unit: inch 20 5/32 MUL24HP230V1R32AO 13 25/64 25 63/64 25 3/4 15 53/64 37 61/64 14 39/64 Unit: inch 22 7/16 Technical Information...
  • Page 16 Service Manual MUL30HP230V1R32AO MUL36HP230V1R32AO MUL42HP230V1R32AO 14 17/32 37 1/8 40 5/32 16 13/16 Unit: inch Technical Information...

  • Page 17: Refrigerant System Diagram

    4. Refrigerant System Diagram Service Manual MUL18HP230V1R32AO outdoor indoor filter outdoor heat exchanger 4-way valve A heat exchanger filter discharge silencer B heat exchanger discharge temperature filter sensor gas -liquid separator A1: A-unit electronic expansion valve B1: B-unit electronic expansion valve...
  • Page 18 Service Manual MUL24HP230V1R32AO outdoor indoor filter A heat exchanger outdoor heat exchanger filter 4-way valve B heat exchanger filter discharge silencer discharge temperature sensor C heat exchanger gas -liquid separator filter A1: A-unit electronic expansion valve B1: B-unit electronic expansion valve C1: C-unit electronic expansion valve A2: A-unit gas pipe temperature sensor B2: B-unit gas pipe temperature sensor...
  • Page 19 Service Manual MUL30HP230V1R32AO MUL36HP230V1R32AO outdoor indoor filter A heat exchanger outdoor heat exchanger filter 4-way valve B heat exchanger filter high pressure switch discharge silencer C heat exchanger discharge temperature sensor filter D heat exchanger gas -liquid separator filter A1: A-unit electronic expansion valve B1: B-unit electronic expansion valve C1: C-unit electronic expansion valve D1: D-unit electronic expansion valve...
  • Page 20 Service Manual MUL42HP230V1R32AO outdoor indoor filter A heat exchanger outdoor heat exchanger filter B heat exchanger 4-way valve filter high pressure switch C heat exchanger filter discharge silencer discharge temperature D heat exchanger sensor filter E heat exchanger gas -liquid separator filter A1: A-unit electronic expansion valve B1: B-unit electronic expansion valve...

  • Page 21: Electrical Part

    Symbol Name White Green COMP Compressor Yellow Brown Grounding wire Blue YEGN Yellow/Green Black Violet Orange ● Outdoor Unit MUL18HP230V1R32AO OPTIONAL WARNING BOTTOM OPTIONAL ELECTRONIC ELECTRONIC OUTTUBE OUTROOM EXHAUST BAND Please don't touch any electronic HEATER EXPANSION EXPANSION TEMP. TEMP.
  • Page 22 Service Manual MUL24HP230V1R32AO 600007066388 Technical Information...
  • Page 23 Service Manual MUL30HP230V1R32AO MUL36HP230V1R32AO 600007066451 Technical Information...
  • Page 24 Service Manual MUL42HP230V1R32AO 60000706645101 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...

  • Page 25: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram MUL18HP230V1R32AO Name Name Terminal of compressor Terminal of outdoor fan Terminal of electronic expansion valve A Terminal of 4-way valve Terminal of gas-liquid valve temperature Sensor A 10 Electric heating terminal of chassis Terminal of electronic expansion valve B...
  • Page 26 Service Manual MUL24HP230V1R32AO Name Name Terminal of compressor 10 Electric heating terminal of chassis Overload protection terminal of compressor Terminal of gas-liquid valve temperature Sensor D Terminal of temperature sensor 12 Terminal of gas-liquid valve temperature Sensor C Terminal of electronic expansion valve A 13 Terminal of gas-liquid valve temperature Sensor B Terminal of electronic expansion valve B 14 Terminal of gas-liquid valve temperature Sensor A...
  • Page 27 Service Manual MUL30HP230V1R32AO MUL36HP230V1R32AO MUL42HP230V1R32AO Name Name Overload protection terminal of compressor 12 Terminal of communication neutral wire Terminal of E disk 13 Terminal of compressor Terminal of DRED 14 Terminal of outdoor fan Terminal of high pressure protection 15 Terminal of temperature Sensor Terminal of low pressure protection 16 Terminal of liquid valve temperature Sensor Terminal of communication wire...

  • Page 28: Function And Control

    6. Function and Control Service Manual 1 Basic functions of the system after 2min; c. the outdoor fan stops after 1min; d. the status of 4-way valve: energized; 1.1 Cooling Mode 1.3.3 Outdoor fan control in heating mode 1.1.1 Cooling conditions and process: The outdoor fan starts before 5s of the starting of compressor and If the compressor is in stop status and start the unit for cooling then it will run in high speed for 40s;...
  • Page 29 Service Manual 6 times, the compressor can’t resume running. The compressor the power. can resume running after cutting off the power and then putting 2.8 Compressor Phase-lacking Protection through the power. (if the running time of the compressor is longer than 7min, the protection times record will be cleared) When the compressor starts, if one of the three phases is detected open, the compressor will enter phase-lacking protection.

  • Page 30: Part Ii : Installation And Maintenance

    7. Notes for Installation and Maintenance Service Manual Safety Precautions: Important! 11. For the air conditioner without plug, an air switch must be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more than Please read the safety precautions carefully before 3mm.
  • Page 31 Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. WARNINGS WARNINGS 1. When installing or relocating the unit, be sure to connection pipe is not yet connected, air will be sucked in and keep the refrigerant circuit free from air or substances cause pressure rise or compressor rupture, resulting in injury.
  • Page 32 Service Manual Safety Operation of Flammable Refrigerant R32 refrigerant warning Aptitude requirement for maintenance man(repairs should be done only be specialists). ● To realize the function of the air conditioner unit, a special ●Any person who is involved with working on or breaking refrigerant circulates in the system.
  • Page 33 Service Manual SYSTEM, the following precautions shall be completed prior to -the ventilation machinery and outlets are operating adequately conducting work on the system. and are not obstructed; Work procedure -if an indirect refrigerating circuit is being used, the secondary Work shall be undertaken under a controlled procedure so as circuit shall be checked for the presence of refrigerant;...
  • Page 34 Service Manual equipment shall be calibrated in a refrigerant-free area.)Ensure ignition sources,and ventilation shall be available that the detector is not a potential source of ignition and is suitable Charging procedures for the refrigerant used. Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated In addition to conventional charging procedures,the following to the refrigerant employed, and the appropriate percentage of...
  • Page 35 Service Manual j) When the cylinders have been filled correctly and the process the recovered refrigerant and labelled for that refrigerant (i.e. completed, make sure that the cylinders and the equipment special cylinders for the recovery of refrigerant). Cylinders shall be are removed from site promptly and all isolation valves on the complete with pressure-relief valve and associated shut-off valves equipment are closed off.
  • Page 36 Service Manual Main Tools for Installation and Maintenance Level meter Measuring tape Screw driver Impact drill Drill head Electric drill Electroprobe Universal meter Inner hexagon Electronic Torque wrench Open-end wrench spanner leakage detector Vacuum pump Pressure meter Pipe pliers Pipe pliers Pipe cutter Pipe expander Pipe bender...

  • Page 37: Installation

    8. Installation Service Manual Installation Procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor...

  • Page 38: Electrical Connections

    Service Manual 8.1 Electrical Connections 1. Remove the handle at the right side plate of the outdoor unit (one For 24K: screw). The connection pipes and the connection wirings of the unit 2. Remove the cable clamp, connect the power connection cable A, unit B and unit C must be corresponding to each other with the terminal at the row of connection and fix the connection.
  • Page 39 Service Manual 30K / 36K: 42K: To unit D To unit E To unit A To unit B To unit C L1 L2 connecting connecting Power cord connecting connecting connecting cable cable cable cable cable To the power supply white green white green...

  • Page 40: Installing The Outdoor Unit

    Service Manual 8.2 Installing the Outdoor Unit (7) Turn the body of the 2-way and 3-way valves. Disconnect the vacuum pump hose. (8) Replace and tighten all the caps on the valves. Use bolts to secure the unit to a flat, solid floor. Use bolts to secure the unit to a flat, solid floor.

  • Page 41: Maintenance

    Service Manual 8.4 Maintenance Fix the support of outdoor unit (select it according to the actual installation situation) 1. Select installation location according to the house structure. Use suitable instruments for the refrigerant R32. 2. Fix the support of outdoor unit on the selected location with expansion screws.

  • Page 42: Check After Installation

    Service Manual 8.6 Check after Installation Check Items Problems Owing to Improper Installation Is the installation reliable? The unit may drop, vibrate or make noises May cause unsatisfactory cooling (heating) Has the gas leakage been checked? effect Is the thermal insulation of the unit May cause condensation and water dropping sufficient? May cause condensation and water dropping...

  • Page 43: Maintenance

    9. Maintenance Service Manual 9.1 Error Code List Error Malfunction name AC status Possible causes code Malfunction of jumper cap The complete unit stops operation 1. Jumper cap is not installed in control panel; 2. Poor contact of jumper cap; 3.
  • Page 44 Service Manual Error Malfunction name AC status Possible causes code Liquid valve temperature 1. Temperature sensor is not well connected or damaged; sensor is ON / short- 2. The wire of temperature sensor is damaged, causing short circuited circuit to copper pipe or outer casing; 3.
  • Page 45 Service Manual Error Malfunction name AC status Possible causes code Outdoor condenser Cool/Dry: compressor and outdoor 1. Temperature sensor is not connected well or damaged; temperature sensor is fan stop operation, while indoor fan 2. Temperature sensor wire of outdoor unit is damaged; short open/short-circuited operates;...
  • Page 46 Service Manual Error Malfunction name AC status Possible causes code Undefined outdoor unit Cool: compressor and outdoor 1. Outdoor ambient temperature exceeds the operation range error fan stops operation, while indoor of unit (eg: less than-20 C or more than 60 C for cooling;...
  • Page 47 Service Manual Error Malfunction name AC status Possible causes code DC bus voltage drop Cool/Dry: compressor stops The power voltage is unstable. malfunction operation, while indoor fan operates; Heat: all loads stops operation. Current detection Cool: compressor and outdoor 1. Is the complete unit lacking of refrigerant? malfunction of unit fan stops operation, while indoor 2.

  • Page 48: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting 1. Troubleshooting for jumper cap Main check points: (1) jumper cap (2) control board of indoor unit Display shows “C5” Check whether the main Insert the equipped board of controller is inserted with jumper cap jumper cap.
  • Page 49 Service Manual 2. Communication malfunction Main check points: (1) Connection wire between indoor unit and outdoor unit (2) Wiring inside the unit (3) Communication circuit of control board of indoor unit (4) Communication circuit of control board of outdoor unit Start Check whether the unit has operated normally before...
  • Page 50 Service Manual 3. IPM protection , over-phase current of compressor Main check points: (1) compressor COMP terminal (2) power supply voltage (3) compressor (4) charging amount of refrigerant (5) air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit...
  • Page 51 Service Manual 4. Overload protection of compressor , high discharge temperature, protection of compressor Main check points: (1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector NOTE:The control board as below means the control board of outdoor unit. After the unit has been cut off the power for more than 20mins...
  • Page 52 Service Manual 5.Troubleshooting for temperature sensor , , , , Main check points: (1) connection terminal (2) temperature sensor (3) main board Start Check whether the connection terminal between the temperature sensor and the control board is loose or not connected well.
  • Page 53 Service Manual 6.High temperature prevention protection ; high power ; system is abnormal Main check points: (1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Overload protection, high temperature prevention protection...
  • Page 54 Service Manual 7.Desynchronization diagnosis for compressor Main check point: (1) system pressure (2) power supply voltage NOTE:The control board as below means the control board of outdoor unit. Desynchronization occurs Desynchronization occurs during operation after turning on the unit Check whether the fan Replace the fan Does the outdoor fan operate terminal OFAN is...
  • Page 55 Service Manual 8.Malfunction diagnosis for failure startup Main check points: (1) compressor wire (2) compressor (3) charging amount of refrigerant NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit The time for stop operation is not enough and the system's high pressure and low pressure is Check whether the compressor...
  • Page 56 Service Manual 9. Charging malfunction of capacitor Main check points: (1) wiring board XT (2) reactor NOTE:The control board as below means the control board of outdoor unit. Put through the power to turn on the unit and then wait for 1min Measure the voltage at both ends of electrolytic capacitor with DC voltmeter.
  • Page 57 Service Manual 10. Troubleshooting-motor(indoor fan) doesn't operate Main check points: (1) connection terminal (2) motor (3) control board AP1 of indoor unit (4) blade 10.1 DC motor Display shows "H6" Pull the blade with hand under de-energization status Check whether the Adjust the motor and the blade blade operates smoothly to make the motor operate...
  • Page 58 Service Manual 10.2 PG motor Display shows "H6" Pull the blade with hand under de- energization status Adjust the motor and Check whether the blade to make the the blade operates blade operate smoothly smoothly. Eliminate malfunction Check whether Insert the feedback the feedback terminal of terminal again indoor fan's motor...
  • Page 59 Service Manual 11. AC overcurrent protection Start The normal fluctuation is about 10% of rated Eliminate malfunction The power voltage is unstable. voltage on the nameplate. The power voltage is too low and the Adjust the power voltage to make it normal. Eliminate malfunction load is too high.

  • Page 60: Troubleshooting For Normal Malfunction

    Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor connection After energization, operation indicator isn't bright wait for power recovery.
  • Page 61 Service Manual 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Wrong wire connection, or poor Check the wiring status according to circuit Connect wires according to wiring diagram to make connection diagram sure all wiring terminals are connected firmly Measure the capacity of fan capacitor with an Capacity of the ODU fan motor is universal meter and find that the capacity is out of...

  • Page 62: Exploded View And Parts List

    10. Exploded View and Parts List Service Manual MUL18HP230V1R32AO Description Description Description Front Grill Valve Cover Electric Box Assy Front Panel Assy Handle Assy Electric Box Cover Axial Flow Fan Temperature Sensor Main Board Chassis Sub-assy Rear Grill Radiator Drainage Joint...
  • Page 63 Service Manual MUL24HP230V1R32AO The component is only for rererence; please refer to the actual product. Description Description Description Front Grill Inhalation tube Assy Electric Box Assy Front Panel 4-Way Valve Assy Condenser Assy Axial Flow Fan Valve Support Assy Clapboard Sub-Assy Drainage hole Cap Right Side Plate Top Cover Assy...
  • Page 64 Service Manual MUL30HP230V1R32AO MUL36HP230V1R32AO 9 10 11 14 15 12 13 The component is only for rererence; please refer to the actual product. Description Description Description Left Side Plate Wire Clamp Electronic Expansion Valve assy Handle Condenser Assy Electric Expand Valve Fitting Brushless DC Motor Gas-liquid Separator Assy 4-Way Valve Assy...
  • Page 65 Service Manual MUL42HP230V1R32AO The component is only for rererence; please refer to the actual product. Description Description Description Left Side Plate Wire Clamp Electronic Expansion Valve assy Handle Condenser Assy 4-Way Valve Assy Brushless DC Motor Gas-liquid Separator Assy Compressor and Fittings Motor Support Sub-Assy Clapboard Chassis Sub-assy...

  • Page 66: Removal Procedure

    11. Removal Procedure Service Manual MUL18HP230V1R32AO Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Step Procedure 1. Before disassembly Complete axonometric drawing. 2. Remove valve cover...
  • Page 67 Service Manual Step Procedure 4. Remove top panel Top panel Remove the connection screws connecting the top panel and the front panel, and then remove the top panel. 5. Remove front grille Grille Remove the connection screws connecting the front grille and the front panel, and then loosen the clasp to remove the front grille.
  • Page 68 Service Manual Step Procedure 7. Remove right side plate Right side plate Remove the screws connecting the right side plate with the chassis and the valve support. Then remove the right side plate. 8. Remove rear grill Rear grill Remove the screws connecting the rear grill and left side plate, and then remove the rear grill.
  • Page 69 Service Manual Step Procedure 10. Remove axial flow blade Axial flow blade Remove the nut on the blade and then remove the axial flow blade. 11. Remove motor and motor support Motor support Motor Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor.
  • Page 70 Service Manual Step Procedure 13. Remove 4-way valve assy 4-way valve assy Unsolder the welding joint connecting the 4-way valve assy with the cut-off valve and the condenser connection pipe, and then remove the 4-way valve assy. 14. Remove valve support sub-assy and expansion valve assy Expansion valve assy Remove the screw connecting the valve support and...
  • Page 71 Service Manual Step Procedure 16. Remove compressor Compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. 17. Remove condenser assy Condenser assy Support Remove the screws fixing the condenser support and then remove the condenser support. Remove the screws connecting the condenser support and the chassis assy, and then remove the condenser assy.
  • Page 72 Service Manual MUL24HP230V1R32AO Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Step Procedure 1. Before disassembly Complete axonometric drawing. 2. Remove valve cover Remove the connection screw fixing the valve cover and then remove the valve cover.
  • Page 73 Service Manual Step Procedure 4. Remove top panel Top panel Remove the connection screws connecting the top panel and the front panel, and then remove the top panel. 5. Remove front grille Grille Remove the connection screws connecting the front grille and the front panel, and then loosen the clasp to remove the front grille.
  • Page 74 Service Manual Step Procedure 7. Remove right side plate Right side plate Remove the screws connecting the right side plate with the chassis and the valve support. Then remove the right side plate. 8. Remove rear grill Rear grill Remove the screws connecting the rear grill and left side plate, and then remove the rear grill.
  • Page 75 Service Manual Step Procedure 10. Remove axial flow blade Axial flow blade Remove the nut on the blade and then remove the axial flow blade. 11. Remove motor and motor support Motor support Motor Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor.
  • Page 76 Service Manual Step Procedure 13. Remove 4-way valve assy 4-way valve assy Unsolder the welding joint connecting the 4-way valve assy with the cut-off valve and the condenser connection pipe, and then remove the 4-way valve assy. 14. Remove valve support sub-assy and expansion Expansion valve assy valve assy Remove the screw connecting the valve support and...
  • Page 77 Service Manual Step Procedure 16. Remove compressor Compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. 17. Remove condenser assy Condenser assy Remove the screws fixing the condenser support and then remove the condenser support. Remove the screws connecting the condenser support and the chassis assy, and then remove the condenser assy.
  • Page 78 Service Manual MUL30HP230V1R32AO Warning: Be sure to wait for a minimum MUL36HP230V1R32AO of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Step Procedure 1. Before disassembly Complete axonometric drawing. 2. Remove valve cover valve cover Remove the connection screw fixing the valve cover and then remove the valve cover.
  • Page 79 Service Manual Step Procedure 4. Remove top panel Top panel Remove the connection screws connecting the top panel and the front panel, and then remove the top panel. 5. Remove front grille Grille Remove the connection screws connecting the front grille and the front panel, and then loosen the clasp to remove the front grille.
  • Page 80 Service Manual Step Procedure 7. Remove rear grill Rear grill Remove the screws connecting the rear grill and left side plate, and then remove the rear grill. 8. Remove right side plate Right side plate Remove the screws connecting the right side plate with the chassis and the valve support.
  • Page 81 Service Manual Step Procedure 10. Remove axial flow blade Axial flow blade Remove the nut on the blade and then remove the axial flow blade. Motor support 11. Remove motor and motor support Motor Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor.
  • Page 82 Service Manual Step Procedure 4-way valve assy 13. Remove 4-way valve assy Remove screws fixing the electricbox; loosen the wire bundle; pull out the wiring terminals and then pull electric box upwards to remove it. 14. Remove valve support sub-assy and expansion Expansion valve assy valve assy Remove the screw connecting the valve support and...
  • Page 83 Service Manual Step Procedure 16. Remove compressor Compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. 17. Remove vapour liquid separator vapour liquid separator Remove the screw connecting the vapour liquid separator, then remove the vapour liquid separator. 18.
  • Page 84 Service Manual Step Procedure 20. Remove condenser assy Condenser assy Support Remove the screws fixing the condenser support and then remove the condenser support. Remove the screws connecting the condenser support and the chassis assy, and then remove the condenser assy.
  • Page 85 Service Manual MUL42HP230V1R32AO Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Step Procedure 1. Before disassembly Complete axonometric drawing. 2. Remove handle Handle Remove the connection screws fixing the handle and the right side plate, and then remove the handle.
  • Page 86 Service Manual Step Procedure 4. Remove top panel Top panel Remove the connection screws connecting the top panel and the front panel, and then remove the top panel. 5. Remove front grille Grille Remove the connection screws connecting the front grille and the front panel, and then loosen the clasp to remove the front grille.
  • Page 87 Service Manual Step Procedure 7. Remove right side plate Right side plate Remove the screws connecting the right side plate with the chassis and the valve support. Then remove the right side plate. 8. Remove rear grill Rear grill Remove the screws connecting the rear grill and left side plate, and then remove the rear grill.
  • Page 88 Service Manual Step Procedure 10. Remove axial flow blade Axial flow blade Remove the nut on the blade and then remove the axial flow blade. 11. Remove motor and motor support Motor support Motor Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor.
  • Page 89 Service Manual Step Procedure 13. Remove 4-way valve assy 4-way valve assy Remove screws fixing the electricbox; loosen the wire bundle; pull out the wiring terminals and then pull electric box upwards to remove it. 14. Remove valve support sub-assy and expansion valve assy Expansion valve assy Remove the screw connecting the valve support and...
  • Page 90 Service Manual Step Procedure 16. Remove compressor Compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. 17. Remove condenser assy Condenser assy Support Remove the screws fixing the condenser support and then remove the condenser support. Remove the screws connecting the condenser support and the chassis assy, and then remove the condenser assy.
  • Page 91 Appendix Service Manual Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius temperature（℉） temperature（℉） temperature（℉） （℉） （℃） （℉） （℃）...
  • Page 92 Service Manual Appendix 2: Pipe Expanding Method Pipe Note: Improper pipe expanding is the main cause of refrigerant leakage.Please expand Pipe cutter the pipe according to the following steps: A:Cut the pip Leaning Uneven Burr ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...
  • Page 93 Service Manual Appendix 3: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454...
  • Page 94 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2 4.289 1.233...
  • Page 95 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08 580.6 73.83 14.62...
  • Page 96 JF00305615 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522219 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com For product improvement, specifications and appearance in this manual are subject to change without prior notice.

This manual is also suitable for:

Mul24hp230v1r32aoMul30hp230v1r32aoMul36hp230v1r32aoMul42hp230v1r32ao

Table of Contents