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Viessmann · Heat pumps · Viessmann Vitocal 250-A (One Base, monobloc)

F.160CAN bus general communication fault between the affected electronics modules

Name in the manufacturer's documentation (service manual): CAN bus general communication fault between the affected electronics modules[1]

In plain words (editorial)

General CAN bus communication fault between electronics modules. The manual says to check the CAN bus cable and subscriber numbers, isolate the system from the power supply and restart it.

When to call a service technician: If the fault persists after a restart, contact your heating contractor.

✎ 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] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified F.160
  2. [2] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified Check the CAN bus cable
  3. [3] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified Check the CAN bus subscriber numbers
  4. [4] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified Isolate the system from the
  5. [5] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified Restart the system
  6. [6] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified If the fault persists, replace the CAN bus cables
  7. [7] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified Replace the electronics modules if required
  8. [8] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 55 manufacturer document – copy from a distributor quote verified No communication between the affected electronics