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Rotenso · Split air conditioners · Rotenso Imoto wall-mounted inverter split

EH 02Zero-crossing signal detection error (for some models)

Name in the manufacturer's documentation (service manual): Zero-crossing signal detection error (for some models)[1]

In plain words (editorial)

Zero-crossing signal detection error – the PCB does not receive the zero-crossing signal feedback (for 4 minutes) or its interval is abnormal. The manual names the connection wires or the PCB.

When to call a service technician: Contact an air-conditioning 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] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 133 manufacturer document – copy from a distributor quote verified Zero-crossing signal detection error(for some models)
  2. [2] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 150 manufacturer document – copy from a distributor quote verified When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal.
  3. [3] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 150 manufacturer document – copy from a distributor quote verified Connection wires
  4. [4] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 150 manufacturer document – copy from a distributor quote verified