GREE, FLEXX HP 18, 15.2 SEER2, 8.5 HSPF2 (Region IV), 2/3 Ton Heat Pump, Ultra heat Side Discharge Condensor, Up to 36KBTU, GUD36W/A-D(U)

FLEXX SERIES: GUD36W/A-D(U) The Ducted Central Heat Pump, an energy-efficient heating solution that tackles the challenges of...
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The Ducted Central Heat Pump, an energy-efficient heating solution that tackles the challenges of cold weather. Developed by GREE, it utilizes state-of-the-art technology to deliver powerful heating capacity even in outdoor temperatures as low as -30°C. Perfect for harsh Canadian winters, it helps curb climate change while providing optimal comfort.

Energy Efficiency

  • In Canada, the cold climate demands significant energy consumption for space heating. On average, space heating comprises a remarkable 61% of energy usage in Canadian homes and 56% in commercial and institutional settings. By implementing energy-efficient heating solutions, we can actively combat global warming while reducing energy consumption in both residential and commercial spaces.
  • Our product incorporates the eco-friendly R410A refrigerant, promoting environmentally conscious cooling practices. R410A is a chlorine-free refrigerant known for its exceptional energy efficiency and minimal impact on the ozone layer.

Home Comfort

  • Whisper-quiet operation: Enjoy a peaceful and serene home environment with our quiet design, ensuring minimal noise disruption during operation.
  • Our home comfort system boasts a wide operating range specifically designed for heating. From chilly autumn evenings to freezing winter temperatures, our system ensures optimal warmth and comfort throughout the colder months. With its ability to efficiently heat your home across a wide range of temperatures, you can rely on consistent and reliable performance, keeping you cozy regardless of the outside conditions. Say goodbye to cold spots and welcome a comfortably heated home with our wide operating range feature for heating.

Convenient Operation

  • Complete GREE Kit Installation: Opt for a hassle-free installation by selecting our comprehensive GREE kit, which includes all the necessary components for a seamless setup.
  • Retrofit with Third-Party Indoor Unit or Furnace: If you already have a third-party indoor unit or a furnace combined with a cased coil, you have the flexibility to retrofit our system, reducing both labor and equipment costs.

Reliable Function

  • Low Temperature Two-stage Compressor: Our heat pumps are equipped with a low temperature two-stage compressor, enabling efficient heating even in extreme climates with temperatures as low as -30¬∞c.
  • Full 3-DC Inverter: With the full 3-DC inverter technology, our heat pumps offer precise and intelligent temperature control, ensuring optimal heating and cooling performance.
  • Bridge-free Digital PFC Control: The bridge-free digital PFC (Power Factor Correction) control further enhances the efficiency and stability of our heat pumps, delivering consistent and reliable performance.
  • The heat pumps feature a cutting-edge two-stage variable speed compressor, delivering exceptional performance and efficiency.
  • Our system offers a convenient retrofit capability, allowing for easy upgrades to your existing heating and cooling setup.

Warranty Coverage

Airtek/Gress proudly backs all their models with a robust manufacturer's warranty. This comprehensive warranty spans an impressive 10 years, safeguarding your investment. Rest assured, any warranty claims you may have will be efficiently handled by Airtek/Gress's, guaranteeing top-tier customer support and satisfaction. The 10-year warranty encompasses the compressor, while other parts enjoy coverage for 5 years. With this warranty, you can trust in the long-term protection of your purchase, ensuring you receive the utmost quality.

Item Parameter
Model GUD36W/A-D(U)
Performance Unit
Cooling Capacity 36000 Btu/h
Heating Capacity 36000 Btu/h
Power Supply 208/230V/1Ph/60Hz
Sound Pressure Level 52 (45-56) dB(A)
Energy Efficiency Unit
EER 11
Electrical Data Unit
Minimum - Maximum Voltage 187-253 V
Control Voltage 24 V
Rated Current Cooling 14.5 A
Rated Current Heating 15 A
MCA 26.5 A
MOP 40 A
Dimension/Weight Unit
External Dimensions (HxWxD) 940 457 820/ (37x18x32-3/10) mm/inch
Net Weight 94.71/209 kg/lbs
Gross Weight 106.95/236 kg/lbs
Refrigerant Piping
Gas Pipe 19/(3/4) m/ft
Liquid Pipe 9.5/(3/8) m/ft
Standard Pipe Length 7.62/25 m/ft
Max refrigerant pipe length between Indoor and Outdoor (m) 30.48/100 m/ft
Max vertical height difference between Indoor and Outdoor (m) 15.24/ 50 m/ft
Connection Method Flare/Screw
Refrigerant Type R410A
Precharge Refrigerant 3.4/123 kg/oz
Operation temperature for cooling -20 ~ 51/-5 ~ 125 C/F
Operation temperature for heating -30 ~ 30/-22 ~ 86 C/F

Gree Error Codes

  • E1 - Compressor high pressure protection
  • E3 - Compressor low pressure protection
  • E4 - Compressor air discharge high-temperature protection
  • F2 - Condenser temperature sensor error
  • F3 - Outdoor ambient temperature sensor error
  • F4 - Discharge temperature sensor error
  • F6 - ODU tube temperature sensor error
  • EE - ODU memory chip error
  • H4 - Overload
  • H5 - IPM protection
  • H6 - DC fan error
  • H7 - Driver out-of-step protection
  • HC - Pfc protection
  • Lc - Startup failure
  • P0 - Driver reset protection
  • P5 - Over-current protection
  • P6 - Master control and driver communication error
  • P7 - Driver module sensor error
  • P8 - Driver module high temperature protection
  • PA - AC current protection
  • Pc - Driver current error
  • PL - Bus low-voltage protection
  • PH - Bus high-voltage protection
  • PU - Charge loop error
  • ee - Drive memory chip error
  • e1 - High pressure sensor error
  • C4 - ODU jumper cap error

Midea Error Codes

  • E3 - Combined water outlet temperature sensor error
  • E4 - Water outlet temperature sensor error
  • 1E5 - Air side heat exchanger refrigerant outlet temperature sensor T3A error
  • E7 - Outdoor ambient temperature sensor error
  • 2Eb - Water side heat exchanger anti-freezing temperature sensor Taf2 error
  • 1Ed - Discharge pipe temperature sensor of system A error
  • 2Ed - Discharge pipe temperature sensor of system B error
  • EF - Water inlet temperature sensor error
  • EP - Discharge pipe temperature sensor failure alarm
  • EU - Air side heat exchanger refrigerant total outlet temperature sensor Tz/7 error
  • 1F9 - Inverter module temperature sensor (Tfin1) error
  • 2F9 - Inverter module temperature sensor (Tfin2) error
  • Fb - Pressure sensor error
  • Fd - Air suction temperature sensor error
  • All stop running
  • Error code is displayed on main PCB and user interface

Error Documentation

Midea Error Codes

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