Skip to content
EN

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

LG Therma V: what emergency operation means and how to check water pressure

Summary (editorial)

The manual explains emergency operation and where to check the water pressure.

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

From the manufacturer's documentation (English source wording, with page)

  1. Emergency mode: temporary heating operation while system met Trouble[1]
  2. Slight trouble: heating/cooling operable[2]
  3. Heavy trouble: heating operable only[3]
  4. Critical trouble: service center request[4]
  5. Unit operates when user presses OK on the pop-up[5]
  6. Turn off the power before troubleshooting[6]
  7. Low water: check gauge and charge water until 2–2.5 bar[7]
  8. Water pressure low: check gauge above 0.3 bar; check expansion tank and gauge[8]
  9. Air purge not completed if water does not splash out when the tip is pressed[9]

⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.

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. 141 official manufacturer document quote verified Emergency mode : temporary heating operation while system met Trouble.
  2. [2] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 141 official manufacturer document quote verified Slight trouble : Heating/Cooling Operable
  3. [3] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 141 official manufacturer document quote verified Heavy trouble : Heating Operable only
  4. [4] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 141 official manufacturer document quote verified Critical trouble : Service center request
  5. [5] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 141 official manufacturer document quote verified AWHP operates when user pressed OK button on pop-up window.
  6. [6] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 276 official manufacturer document quote verified Turn off the power before proceeding troubleshooting
  7. [7] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 276 official manufacturer document quote verified Check pressure gage and charge more water until pressure
  8. [8] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 276 official manufacturer document quote verified Check if pressure gage indicates above 0.3 Bar.
  9. [9] LG Therma V Monobloc – Installation manual (MFL68026607 Rev.21) (MFL68026607 Rev.21_062126) , p. 276 official manufacturer document quote verified If water does not splash out when the tip(at the top of the