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Gree · Split air conditioners · Gree Pular (wall-mounted split, R32)

U8Malfunction of zero-crossing signal of indoor unit

Name in the manufacturer's documentation (service manual): Malfunction of zero-crossing signal of indoor unit[1]

In plain words (editorial)

The indoor unit does not see a correct zero-crossing signal of the mains supply. The service manual lists abnormal power supply or a damaged indoor main board.

When to call a service technician: Call a service technician if the code returns after switching the unit off and on.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

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. [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 Malfunction of zero-cross-
  2. [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 is abnormal
  3. [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 Main board of indoor unit is damaged
  4. [4] 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 Compressor, outdoor fan and indoor fan stop operation