Gree · Split air conditioners · Gree Pular (wall-mounted split, R32)
U9Zero-crossing malfunction of outdoor unit
Name in the manufacturer's documentation (service manual): Zero-crossing malfunction of outdoor unit
[1]
In plain words (editorial)
Zero-crossing malfunction of the outdoor unit; the service manual's remedy is replacing the outdoor control board.
When to call a service technician: Call a service technician – the boards and compressor are checked inside the unit.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- Replace the control board of outdoor unit[2]
What the device does (source text)
- Cool: compressor stops operation, while indoor fan operates; Heat: all loads stops operation[3]
⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.
The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →
Sources
Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.
- [1] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 103 manufacturer document – copy from a distributor checked manually
Zero-crossing malfunction
- [2] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 103 manufacturer document – copy from a distributor quote verified
Replace the control board of outdoor unit
- [3] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 103 manufacturer document – copy from a distributor quote verified
Cool: compressor stops operation, while indoor fan operates; Heat: all loads stops operation