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

E9Internal unit overload

Name in the manufacturer's documentation (service manual): Internal unit overload[1]

In plain words (editorial)

Indoor unit overload: in heating the indoor heat exchanger got too hot repeatedly. The service manual lists the expansion valve, a dirty heat exchanger, the sensor or insufficient refrigerant; its first step is to clean the filters.

When to call a service technician: Clean the filters as described in the user manual; if the code returns, call a service technician.

✎ 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. 41 official manufacturer document quote verified rises above 65℃ twices in 30 minutes
  3. [3] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 41 official manufacturer document quote verified Faulty electronic expansion valve
  4. [4] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 41 official manufacturer document quote verified Dirty heat exchanger
  5. [5] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 41 official manufacturer document quote verified Faulty heat-exchange sensor
  6. [6] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 41 official manufacturer document quote verified Insufficient gas
  7. [7] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 41 official manufacturer document quote verified 1) clean the filters
  8. [8] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 41 official manufacturer document quote verified 2) reinstall the fan
  9. [9] Haier – Service Manual, Model AS35S2SF1FA-BH (Flexis Plus), Version V1, 2020-11-14 (V1 (2020-11-14)) , p. 41 official manufacturer document quote verified check room temperature and