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

CH21DC PEAK (IPM Fault)

Name in the manufacturer's documentation (service manual): DC PEAK (IPM Fault)[1]

In plain words (editorial)

DC peak (IPM fault) in the inverter: instant overcurrent or over rated current. The service manual names a locked compressor or bad U/V/W connection, an overload condition (refrigerant overcharge, pipe length, stopped outdoor fan) or poor insulation of the IPM or compressor.

When to call a service technician: Contact an LG-authorised service technician or your installer.

✎ 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. 278 official manufacturer document quote verified 21 DC PEAK (IPM Fault)
  2. [2] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Instant over current
  3. [3] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Over Rated current
  4. [4] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Poor insulation of IPM
  5. [5] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified An instant over current in the U,V,W phase - Comp lock - The abnormal connection of U,V,W
  6. [6] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Over load condition - Overcharging of refrigerant Pipe length. Outdoor Fan is stop
  7. [7] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Poor insulation of compressor