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Panasonic · Heat pumps · Panasonic Aquarea Monobloc, generation H

F27Pressure switch abnormality

Name in the manufacturer's documentation (service manual): Pressure switch abnormality[1]

In plain words (editorial)

The high-pressure switch should be closed while the compressor is stopped, but the unit sees it open – usually the switch itself, its connector or the PCB.

When to call a service technician: Call a service technician with F-gas certification – this concerns the refrigerant circuit.

✎ 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] Service Manual – Mono Bloc Unit WH-MDC05H3E5 / 07 / 09 (PAPAMY1709003CE) , p. 146 official manufacturer document quote verified F27 Pressure switch abnormality
  2. [2] Service Manual – Mono Bloc Unit WH-MDC05H3E5 / 07 / 09 (PAPAMY1709003CE) , p. 183 official manufacturer document quote verified During compressor stop, and outdoor high pressure switch is remain opened.
  3. [3] Service Manual – Mono Bloc Unit WH-MDC05H3E5 / 07 / 09 (PAPAMY1709003CE) , p. 183 official manufacturer document quote verified Continue for 1 minute.
  4. [4] Service Manual – Mono Bloc Unit WH-MDC05H3E5 / 07 / 09 (PAPAMY1709003CE) , p. 183 official manufacturer document quote verified Faulty connector connection.
  5. [5] Service Manual – Mono Bloc Unit WH-MDC05H3E5 / 07 / 09 (PAPAMY1709003CE) , p. 183 official manufacturer document quote verified Faulty switch.
  6. [6] Service Manual – Mono Bloc Unit WH-MDC05H3E5 / 07 / 09 (PAPAMY1709003CE) , p. 183 official manufacturer document quote verified Faulty outdoor unit PCB (main).