Gree · Heat pump

U2 Outdoor capacity code / jumper wrong

Medium severity Gree GMV6 Mini VRF

What the control is telling you

Outdoor capacity setting or jumper cap wrong, usually after a board swap.

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

Likely causes

Cap or DIPs not copied

Test and repair steps

Move the jumper caps from the old board and match all DIP switches.

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

P5 Compressor phase overcurrent
P6 Compressor drive IPM protection
P7 Inverter module temperature sensor fault
P8 Inverter module overheated
P9 Inverter compressor lost synchronism
U0 Compressor preheat not finished
U4 Refrigerant shortage at startup
U6 Service valves not opened

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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.