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

F20Outdoor compressor overheating protection

Name in the manufacturer's documentation (service manual): Outdoor compressor overheating protection[1]

In plain words (editorial)

The compressor became too hot (compressor overheating protection). The service manual lists causes such as a refrigerant shortage, a closed valve or a clogged expansion valve or strainer.

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 – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 190 manufacturer document – copy from a distributor quote verified F20 Outdoor compressor overheating protection
  2. [2] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified During operation of cooling and heating, when temperature above 112°C is detected by the compressor tank temperature sensor.
  3. [3] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified Continue 4 times in 30 minutes.
  4. [4] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified Faulty compressor tank temperature sensor.
  5. [5] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified Faulty compressor.
  6. [6] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified 2/3 way valve closed.
  7. [7] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified Refrigerant shortage (refrigerant leakage).
  8. [8] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified Clogged expansion valve or strainer.
  9. [9] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified Faulty outdoor unit PCB (main).
  10. [10] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 224 manufacturer document – copy from a distributor quote verified always switch off the power before remove and connect the component.