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

CH23DC Link High / Low Volt

Name in the manufacturer's documentation (service manual): DC Link High / Low Volt[1]

In plain words (editorial)

The DC link voltage is too high (above 420 V DC) or too low (below 140 V DC). The service manual checks the L/N connection, the input voltage and the DC link voltage sensor parts on the PCB.

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 23 DC Link High / Low Volt
  2. [2] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified DC Link Voltage is above 420 V DC
  3. [3] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified DC Link Voltage is below 140 V DC
  4. [4] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Check CN_(L), CN_(N) Connection
  5. [5] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Check Input Voltage
  6. [6] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 278 official manufacturer document quote verified Check PCB DC Link voltage sensor parts