Viessmann · Vitodens 111-W
576 boiler fault code
Vitodens 111-W types B1LF / B1LF-M
What 576 means
Short circuit, room temperature sensor, heating circuit 1.
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, or someone has possible carbon-monoxide symptoms, leave and call 0800 111 999 from outside.
Safe check: Note the code shown on the display. Do not open, adjust or repeatedly reset the boiler. Contact a Gas Safe registered engineer.
Gas Safe registered engineer: The code remains or returns after the step above, or no home step applies; arrange diagnosis by a Gas Safe registered engineer.
Official source: Vitodens 111-W types B1LF/B1LF-M · 6167585 GB · Fault messages, Cause column, code 576, printed p. 88