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

H90Indoor/outdoor abnormal communication

Name in the manufacturer's documentation (service manual): Indoor/outdoor abnormal communication[1]

In plain words (editorial)

The indoor and outdoor units cannot communicate properly – wiring between them or one of the PCBs.

When to call a service technician: The connection wiring is checked by the installer.

✎ 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 H90 Indoor/outdoor abnormal communication
  2. [2] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified During operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal.
  3. [3] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified Continue for 1 minute after operation.
  4. [4] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified Faulty outdoor unit PCB (main).
  5. [5] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified Faulty indoor unit PCB (main).
  6. [6] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified Indoor-outdoor signal transmission error due to wrong wiring.
  7. [7] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified Indoor-outdoor signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units.
  8. [8] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified Indoor-outdoor signal transmission error due to disturbed power supply waveform.
  9. [9] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 214 manufacturer document – copy from a distributor quote verified always switch off the power before remove and connect the component.