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Vaillant · Vaillant aroTHERM plus with uniTOWER plus · Procedure

Vaillant aroTHERM plus: reading an F code, when a reset is allowed, and the fault list

Summary (editorial)

The manual explains where F codes appear, when a reset is allowed and where the fault list is.

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

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

  1. Fault codes have priority over all other displays[1]
  2. Multiple faults shown for two seconds each in sequence[2]
  3. Eliminate the fault[3]
  4. To start up again, press the reset button[4]
  5. If fault recurs despite several reset attempts, contact Customer Service[5]
  6. Fault memory: last ten faults in chronological order[6]
  7. Outdoor unit: fault code is shown on the display of the indoor unit control[7]
  8. R290 heavier than air; collects near the ground on leakage[8]

⚠ 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] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 44 official manufacturer document quote verified Fault codes have priority over all other displays.
  2. [2] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 44 official manufacturer document quote verified the corresponding fault codes for two seconds each in se
  3. [3] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 44 official manufacturer document quote verified Eliminate the fault.
  4. [4] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 44 official manufacturer document quote verified To start up the product again, press the reset button
  5. [5] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 44 official manufacturer document quote verified If you are unable to eliminate the fault and the fault re
  6. [6] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 44 official manufacturer document quote verified the last ten faults that occurred in chronological order.
  7. [7] Vaillant aroTHERM plus VWL 35/6–75/6 A S2 – Installation and maintenance instructions (0020330791_03) (0020330791_03) , p. 36 official manufacturer document quote verified In the event of a fault, a fault code is shown on the display of
  8. [8] Vaillant aroTHERM plus VWL 35/6–75/6 A S2 – Installation and maintenance instructions (0020330791_03) (0020330791_03) , p. 7 official manufacturer document quote verified escaping refrigerant may collect near the ground.