Viessmann Vitodens 111-W Error 102: No internet connection

Viessmann Vitodens 111-W water heater · taken from the manufacturer’s manual, pages cited

Fault code102

Fault 102 indicates no internet connection because there is an error with the communication module. The manual's first action is: “Check cables and plug-in connections between heat management unit and communication module.”

Model
Viessmann Vitodens 111-W
Display shows
No internet connection (102)
Type
Fault code
Source
Manual p. 72

What 102 means

No internet connection p. 72

Common causes

  • Error with communication module p. 72

What to do

  1. Check cables and plug-in connections between heat management unit and communication module. p. 72

If 102 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Viessmann service.

Open the manual at page 72 All Vitodens 111-W error codes Manual details & download

This page summarises what the manufacturer’s manual says about 102; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Viessmann. Found a mistake? Report an error.