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LG · Heat pumps · LG Therma V Monobloc (air-to-water heat pump)

CH54Open and Reverse Phase Error

Name in the manufacturer's documentation (service manual): Open and Reverse Phase Error[1]

In plain words (editorial)

Open or reverse phase error – the service manual names a main power wiring fault. The protection prevents phase unbalance and reverse rotation of the compressor.

When to call a service technician: Have an electrician check the main power wiring, or contact an LG-authorised service technician.

✎ 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] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 279 official manufacturer document quote verified 54 Open and Reverse Phase Error
  2. [2] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 279 official manufacturer document quote verified Main power wiring fault
  3. [3] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 279 official manufacturer document quote verified Prevention of phase unbalance and prevention of reverse rotation of constant-rate compressor