Viessmann Vitodens 111-W Error 71: Burner in a fault state

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

Fault code71

Fault 71 means the burner is in a fault state due to fan speed being too low. The manual's first action is: “Check fan for blockage. Check setting for gas type and flue system. Reset the appliance.”

Model
Viessmann Vitodens 111-W
Display shows
Burner in a fault state (71)
Type
Fault code
Source
Manual p. 71

What 71 means

Burner in a fault state p. 71

Common causes

  • Fan speed too low p. 71

What to do

  1. Check fan for blockage. Check setting for gas type and flue system. Reset the appliance. p. 71

If 71 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 71 All Vitodens 111-W error codes Manual details & download

This page summarises what the manufacturer’s manual says about 71; 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.