Gree ME34-44/G Owner's Manual
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Gree ME34-44/G Owner's Manual

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Owner's Manual
Original Instructions
24 Volt Adaptor
Model: ME34-44/G
Thank you for choosing our product.
Please read this Owner's Manual carefully before operation and
retain it for future reference.
If you have lost the Owner's Manual, please contact the local agent
or visit www.gree.com or send an email to global@cn.gree.com for
the electronic version.
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree ME34-44/G

  • Page 1 Please read this Owner’s Manual carefully before operation and retain it for future reference. If you have lost the Owner's Manual, please contact the local agent or visit www.gree.com or send an email to global@cn.gree.com for the electronic version. GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...
  • Page 2 To Users Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve...
  • Page 3 The setting of such unavailable function will not affect unit’s operation. (7) The final right to interpret for this instruction manual belongs to Gree Electric Appliances Inc. of Zhuhai.

  • Page 4: Table Of Contents

    Contents 1 Safety Notices (Please be sure to abide ) ......1 2 Notices for Use ..............2 3 Functions Overview ............. 3 4 Detail Introduction ............... 4 4.1 Interface Function Instruction ..........4 4.2 Button Instruction ..............6 4.3 Display Instruction ..............7 4.4 Function Instruction ..............

  • Page 5: Safety Notices (Please Be Sure To Abide)

    24 Volt Adaptor 1 Safety Notices (Please be sure to abide) WARNING: If these safety notices are not abided strictly, it may cause severe damage to the unit or the people. NOTE: If these safety notices are not abided strictly, it may cause slight or medium damage to the unit or the people.

  • Page 6: Notices For Use

    24 Volt Adaptor 2 Notices for Use NOTICE (1) This device use 24VAC for power supply. Do not connect other power to this device. Otherwise, it may cause fire hazard or damage to the unit. (2) Before touching the electric components, please be sure the appliance is disconnected to power.

  • Page 7: Functions Overview

    Transfer the control signal of 24VAC HVAC Thermostat (such as nest) into the control signal of Gree split-type unit, cassette unit, duct-type unit, floor ceiling unit and so on to make the third party 24VAC HVAC Thermostat can control Gree split-type unit, cassette unit, duct-type unit, floor ceiling unit and so on.

  • Page 8: Detail Introduction

    24 Volt Adaptor Please refer to the section of parameter setting for detailed setting operation. Appearance of 24 volt adaptor is shown as below: Fig. 3.1 Appearance of 24 volt adaptor 4 Detail Introduction 4.1 Interface Function Instruction Schematic diagram of interface of main board and interface function instruction are shown as below:...
  • Page 9 24 Volt Adaptor 9 10 11 12 Fig.4.1 Schematic diagram of interface’s function Table 4.1.1 Function instruction of interface of main board Interface Instruction RS485 communication interface, H1, H2 connecting the indoor unit 4-way valve for heat pumps Supply power for adapter (24VAC)

  • Page 10: Button Instruction

    24 Volt Adaptor Interface Instruction Supply power for thermostat (24VAC) Supply power for adapter (Common) Supply power for thermostat (Common) Fan/ indoor fan Heating/E-heater Cooling/compressor Low fan speed Medium fan speed High fan speed 4.2 Button Instruction Function instruction for buttons are shown as below: Table 4.2.1 Function instruction for buttons Buttons name Button function...

  • Page 11: Display Instruction

    24 Volt Adaptor 4.3 Display Instruction 3-bit nixie tube displays error code and engineering parameter setting. Table 4.3.1 Display of 3-bit nixie tube Display content Meaning When there’s malfunction for the unit, please contact Error code the after-sales service person. Please refer to the section of “error code”...
  • Page 12 24 Volt Adaptor When setting O/B interface as the interface of 4-way valve for cooling, the corresponding operation modes for the input signals of different interfaces on the main board is: Table 4.4.2 Corresponding operation mode for each input signal (set “01” for P02) Note: “G”...
  • Page 13 24 Volt Adaptor Mode × × × Heating × Heating and E-heater When setting 24VAC signal as the control command for cooling, heating, fan and other operation modes (set “01” for P01), the interface meaning is as below: Table 4.4.4 Interface meaning of 24 Volt Adaptor (mode control) Interface Meaning Heating...
  • Page 14 24 Volt Adaptor Mode × Heating × × × × × × × × × × × × × × NOTES! “ ” indicates ON; “×” indicates OFF; “*”indicates ON or OFF. When mode is Heating and E-heater If the unit supports auxiliary heating, when it meets the activation condition of auxiliary heating under heating mode, the auxiliary heating mode will be turned on.
  • Page 15 24 Volt Adaptor 4.4.2 Temperature Setting When the unit is operating under cooling mode, the adaptor is fixed to send the set temperature of 16°C to the indoor unit; When the unit is operating under heating mode, the adaptor is fixed to send the set temperature of 30°C to the indoor unit;...
  • Page 16 24 Volt Adaptor Table 4.4.7 Unit parameters setting list Parameter Parameter Default Parameter range Remark code name value Check historic error. When nixie tube displays “P00”, press “ENTER SW4 ”button to enter historic error Error code The last 5 error check;...
  • Page 17 24 Volt Adaptor Parameter Parameter Default Parameter range Remark code name value When the third party thermostat has reached to the temperature point (Y and 00: 0min W signal are all OFF), the adaptor will Delay OFF 01: 5 min continue to operate for a period of time time setting 02: 10 min...

  • Page 18: Product Installation

    24 Volt Adaptor 5 Product Installation 5.1 Product Dimension unit: mm Fig. 5.1 Product dimension...

  • Page 19: Installation Procedure

    24 Volt Adaptor 5.2 Installation Procedure Twist off the screws used for fixing the cover, and then open the cover of 24 volt adaptor. Check whether the screws used for fixing the screws of main board is loose. If yes, please tighten the screws until the main board is fixed. Attach the bottom case of 24 volt adaptor at the in stallation position (such as wall), and then use the screw to fix the bottom case and the installation hole on the wall together.

  • Page 20: Communication Connection

    24 Volt Adaptor Fig. 5.2 Wiring diagram 5.3 Communication Connection 5.3. 1 Connection between Adapter and Indoor Unit Connect H1 and H2 of communication interface of adaptor RS485 to corresponding position of wired controller of unit to finish the installation.
  • Page 21 24 Volt Adaptor Communication connection method: iring method with the indoor unit’s network, which is shown as below: Unit 4-core connecting wire 2-core connecting wire Adaptor Thermostat Fig. 5.3 One adaptor controls one indoor unit NOTE! If the indoor unit has 4-core connecting wire, please connect the 2-core connecting wires of 24 volt adaptor.
  • Page 22 24 Volt Adaptor as compressor, 4-way valve, indoor fan. The connection method is shown as below: 100~240VAC Transformer 24 VAC Thermostat 24 Volt Adaptor Fig. 5.4 Connection method of 24 Volt Adaptor (load control) NOTE! The 4-way valve interface of 24VAC HVAC thermostat may only has type “O” or...
  • Page 23 24 Volt Adaptor “B”, and it can also connect O/B of adaptor , while it needs to set adaptor to ensure that the adaptor has the same meaning with the interface of 24VAC HVAC thermostat. When the output single of 24VAC HVAC thermostat is the control command for operation mode, such as heating, cooling or fan mode.

  • Page 24: Malfunction Display

    24 Volt Adaptor NOTE! If the thermostat hasn’t G1, G2 and G3 (low, medium and high fan speeds) interfaces, it’s no need to connect wires for these three interfaces of adaptor. 6 Malfunction Display When there’s malfunction during operation, the nixie tube of 24 volt adaptor will display the error code.
  • Page 25 24 Volt Adaptor Error Error Error Error Code Code Outdoor unit condenser mid-tube temperature Main error at grid connection side sensor open/short circuited Discharge temperature sensor open/short Forced defrosting circuited Indoor and outdoor communication error Compressor startup failure DC bus under-voltage protection High discharge temperature protection DC bus over-voltage protection Overload protection...
  • Page 26 24 Volt Adaptor Error Error Error Error Code Code Sensor connection protection Whole unit current sensing circuit error DC bus voltage drop error 4-way valve reversing error Outdoor fan 1 error protection Motor stalling Outdoor fan 2 error protection PG motor zero-crossing protection compressor inhalation temperature sensor error Indoor fan tripping error Communication error between IDU and...
  • Page 27 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com Web: www.gree.com 600005064823...

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