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Gree · Heat pump

bJ High and low pressure sensors swapped

Medium severity Gree GMV6 Mini VRF

What the control is telling you

The pressure transducers are plugged into each other's connectors.

Applies to: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V..WL/C-T(U))

Likely causes

  • Sensors swapped at the board

Test and repair steps

  1. Move the plugs so LP is on CN426 and HP is on CN425.

Models that show this code

3 models in Gree GMV6 Mini VRF

GMV-V36WL/C-T(U)GMV-V48WL/C-T(U)GMV-V60WL/C-T(U)

Other codes on the same units

  • PL DC bus voltage too low
  • PP Inverter compressor AC current protection
  • UE Refrigerant charging invalid
  • bH System clock abnormal
  • bd Sub-cooler gas inlet sensor open or shorted (20K)
  • dC Indoor capacity DIP setting wrong
  • dH Wired controller board fault
  • dL Indoor discharge air sensor open or shorted (15K)

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Source: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V36-48-60WL-C-T(U)) service.pdf - section Chapter 3 Faults, 4.1 Error Indication. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.