Skip to content
EN

Mitsubishi Electric · Heat pumps · Mitsubishi Electric Ecodan FTC7 controller (PUZ-WM/WZ, PUHZ-SW)

J9Communication failure between FTC (Main) and FTC (Sub).

Name in the manufacturer's documentation (service manual): Communication failure between FTC (Main) and FTC (Sub).[1]

This page only quotes the original English documentation. A plain-language explanation has not been written yet, so the page is not indexed by search engines.

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] Mitsubishi Electric Ecodan FTC7 PAC-IF081B-E / PAC-IF082B-E / PAC-IF083B-E – Installation Manual (DG79H200H02) , p. 33 official manufacturer document quote verified J9 Communication failure between FTC (Main) and FTC (Sub).
  2. [2] Mitsubishi Electric Ecodan FTC7 PAC-IF081B-E / PAC-IF082B-E / PAC-IF083B-E – Installation Manual (DG79H200H02) , p. 33 official manufacturer document quote verified j9 communication failure between ftc (main) and ftc (sub). check connection cable for damage or loose connections.