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

CH03Bad communication between remote controller and unit.

Name in the manufacturer's documentation (service manual): Bad communication between remote controller and unit.[1]

In plain words (editorial)

Bad communication between the remote controller and the unit. The service manual says the wire connection between the remote controller and the main PCB (heater) should be tight.

When to call a service technician: If the controller wiring is intact and the code stays, 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. 277 official manufacturer document quote verified 3 Bad communication between remote controller and unit.
  2. [2] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 277 official manufacturer document quote verified Incorrect connection between sensor and PCB(Heater)
  3. [3] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 277 official manufacturer document quote verified PCB(Heater) fault
  4. [4] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 277 official manufacturer document quote verified Sensor fault
  5. [5] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 277 official manufacturer document quote verified Wire connection between remote controller and Main PCB assembly(Heater) should be tight
  6. [6] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 277 official manufacturer document quote verified Output voltage of PCB should be 12 V DC