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Haier · Split air conditioners · Haier Flexis Plus (wall-mounted split, R32)

F19Power over/under voltage protection

Name in the manufacturer's documentation (service manual): Power over/under voltage protection[1]

In plain words (editorial)

Power over/under-voltage protection: the unit detected an abnormal rise or drop of the supply voltage. The service manual lists the supply voltage, the IPM module or the outdoor PCB.

When to call a service technician: If it repeats, have the supply and the unit checked.

✎ 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] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 29 official manufacturer document quote verified
  2. [2] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 36 official manufacturer document quote verified An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit
  3. [3] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 36 official manufacturer document quote verified Supply voltage not as specified
  4. [4] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 36 official manufacturer document quote verified the IPM module is broken
  5. [5] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 36 official manufacturer document quote verified the outdoor PCB is broken
  6. [6] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 36 official manufacturer document quote verified Electrify the machine again and turn it on with
  7. [7] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 36 official manufacturer document quote verified (+310VDC) with a multimeter
  8. [8] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 36 official manufacturer document quote verified This question may be caused by the power. Repair