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Gree GWH12NB-K3NNA4A - User Manual

Gree GWH12NB-K3NNA4A
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GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Service Manual
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Questions and Answers

  • C
    Christopher BennettAug 20, 2025
    What to do if my Gree GWH12NB-K3NNA4A Air Conditioner unit cannot run?
    • J
      John HumphreyAug 20, 2025
      If your Gree Air Conditioner isn't running, check the following: Ensure the power is on and the plug is securely inserted. Verify that the circuit protection device hasn't tripped. Have professionals check if the voltage is too high or low. Also, confirm that the TIMER is correctly set.
  • P
    Patricia ReidAug 22, 2025
    How to fix a Gree Air Conditioner wireless remote control that is not working?
    • M
      Michael LongAug 22, 2025
      If your Gree Air Conditioner's wireless remote control isn't working, try these steps: First, unplug the air conditioner, wait a few seconds, and plug it back in. Ensure the remote is within the receiving range and that there are no obstructions. Check the batteries in the remote and replace them if necessary. If the problem persists, the remote control may be damaged.
  • S
    Steven SandersAug 25, 2025
    Why does my Gree Air Conditioner make a creaking noise when it starts or stops?
    • M
      moorelisaAug 25, 2025
      The creaking noise you hear when starting or stopping your Gree Air Conditioner is caused by the deformation of plastic components due to temperature changes.
  • M
    Mrs. Deborah ShafferAug 26, 2025
    Why is the cooling/heating efficiency not good in my Gree GWH12NB-K3NNA4A Air Conditioner?
    • S
      scotterikAug 26, 2025
      If your Gree Air Conditioner isn't cooling or heating efficiently, make sure the temperature setting is appropriate. Check that the inlet and outlet vents are not obstructed and that the filter is clean. Ensure windows and doors are closed, the fan speed isn't set too low, and there aren't any heat sources in the room.
  • A
    Anthony JimenezAug 27, 2025
    How to fix a Gree Air Conditioner wireless remote control that is not available?
    • V
      vburkeAug 27, 2025
      If your Gree Air Conditioner's wireless remote control isn't working, try these steps: Unplug the unit, then plug it back in. Ensure you are within the receiving range and that there are no obstructions. Check the batteries in the remote and replace them if necessary. Also, check the remote for any damage.
  • C
    Christopher GardnerAug 29, 2025
    Why is my Gree Air Conditioner cooling/heating efficiency not good?
    • C
      Cory BarnesAug 29, 2025
      Several factors can affect the cooling or heating efficiency of your Gree Air Conditioner. Check if the temperature setting is appropriate for the room. Make sure that the air inlet and outlet vents are not obstructed. A dirty filter can also reduce efficiency, so clean it if necessary. Ensure that windows and doors are properly closed to prevent drafts. If the fan speed is set to low, increase it for better airflow. Finally, identify and eliminate any heat sources in the room that may be affecting the air conditioner's performance.
  • K
    Karen HarrisAug 31, 2025
    Why is my Gree GWH12NB-K3NNA4A Air Conditioner indoor unit not delivering air?
    • L
      Leroy HendersonAug 31, 2025
      There could be several reasons why your Gree Air Conditioner's indoor unit isn't delivering air. In HEAT mode, the unit may stop delivering air for up to 2 minutes to prevent blowing cool air when the indoor heat exchanger temperature is very low. Also, in HEAT mode, the unit will automatically defrost when the outdoor temperature is low or humidity is high, which will cause the indoor unit to stop blowing air for 3-12 minutes. During defrosting, water may flow out or vapor may be produced. In dehumidifying mode, the indoor fan may stop to prevent condensed water from vaporizing again and to restrain temperature rising.
  • B
    Brittany CarpenterSep 2, 2025
    Why does my Gree GWH12NB-K3NNA4A not operate immediately when restarted?
    • M
      Mary WilkinsSep 2, 2025
      When a Gree Air Conditioner is stopped, it will not operate for approximately 3 minutes to protect itself.
  • E
    elliotttiffanySep 4, 2025
    Why is my Gree GWH12NB-K3NNA4A Air Conditioner outdoor unit leaking water?
    • E
      Erica BellSep 4, 2025
      If your Gree Air Conditioner is running in COOL mode, condensation may form on the pipe and pipe connections due to the cooling process, leading to water leakage.
  • R
    riceanneSep 6, 2025
    Why is my Gree GWH12NB-K3NNA4A Air Conditioner leaking water from the outdoor unit?
    • R
      Rebecca PearsonSep 7, 2025
      Water leakage in the outdoor unit of your Gree Air Conditioner is normal in certain modes. In COOL mode, condensation forms on pipes and connections. In Auto Defrosting mode, ice thaws and flows out. In HEAT mode, water on the heat exchanger drips off.

Gree GWH12NB-K3NNA4A Specifications

General IconGeneral
Cooling Capacity12000 BTU/h
Heating Capacity13000 BTU/h
Energy Efficiency Ratio (EER)3.21
Power Supply220-240V, 50Hz
RefrigerantR32
Weight (Indoor Unit)8.5 kg
Weight (Outdoor Unit)28 kg
Outdoor Unit Noise Level52 dB(A)
TypeSplit
Indoor Unit Noise Level26 dB(A)
Operating Temperature (Cooling)18°C to 43°C

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