Gree · Split air conditioners · Gree Pular (wall-mounted split, R32)
U3DC bus voltage drop malfunction
Name in the manufacturer's documentation (service manual): DC bus voltage drop malfunction
[1]
In plain words (editorial)
DC bus voltage drop malfunction; the service manual points to an unstable supply voltage.
When to call a service technician: If it repeats, have the supply checked.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- The power voltage is unstable[2]
⚠ 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
DC bus voltage drop mal-
- [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
The power voltage is unstable