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Panasonic · Heat pumps · Panasonic Aquarea Bi-bloc (split), generation L (R290)

H64Refrigerant high pressure abnormality

Name in the manufacturer's documentation (service manual): Refrigerant high pressure abnormality[1]

In plain words (editorial)

The heat pump has detected a fault of the outdoor high pressure sensor (its reading is used to detect a sensor error). The service manual names a faulty connector connection, the sensor itself or the outdoor unit PCB as causes.

When to call a service technician: Contact the installer or Panasonic service – the sensor, its connector and the PCB are checked inside the unit.

✎ 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 – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 189 manufacturer document – copy from a distributor quote verified H64 Refrigerant high pressure abnormality
  2. [2] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 206 manufacturer document – copy from a distributor quote verified During operation of cooling and heating, when the outdoor high pressure sensor output signal is 0 Vdc or 5 Vdc.
  3. [3] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 206 manufacturer document – copy from a distributor quote verified Continue 4 times in 20 minutes.
  4. [4] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 206 manufacturer document – copy from a distributor quote verified Faulty connector connection.
  5. [5] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 206 manufacturer document – copy from a distributor quote verified Faulty sensor.
  6. [6] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 206 manufacturer document – copy from a distributor quote verified Faulty outdoor unit PCB (main).
  7. [7] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 206 manufacturer document – copy from a distributor quote verified always switch off the power before remove and connect the component.