Viessmann Vitodens 200-W fault codes

Built 2009 onwards

Controlled by a Vitotronic 100 HC1B (constant temperature) or Vitotronic 200 HO1B (weather-compensated) on the B2HA and B2HB, and by the E3 platform with a 3.5 or 7-inch display on the B2HF/B2KF and B2HH. Vitotronic units print a sentence with the code, use EE and EF rather than F4 for flame failure, and carry Lambda Pro combustion-controller calibration codes (E1, E2, E7, E8, EA, Eb) that the 100-W does not have. E3, E5, FC, Fd and FF mean something different here than on a 100-W.

Codes on the Vitodens 200-W follow the same Viessmann scheme as the rest of the range. Where a code behaves differently on this generation, the code page says so.