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

H74PCB communication error

Name in the manufacturer's documentation (service manual): PCB communication error[1]

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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 H74 PCB communication error
  2. [2] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 212 manufacturer document – copy from a distributor quote verified When External PCB connection is select “YES” and no communication with External PCB micon for 10 seconds and above.
  3. [3] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 212 manufacturer document – copy from a distributor quote verified After 1 minute operation started.
  4. [4] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 212 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. 212 manufacturer document – copy from a distributor quote verified Faulty indoor PCB.
  6. [6] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 212 manufacturer document – copy from a distributor quote verified Faulty indoor sub PCB.
  7. [7] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 212 manufacturer document – copy from a distributor quote verified always switch off the power before remove and connect the component.