Technical Service Bulletins for Heating Contractors

Burner is locked out with fault code F7

Applies to: Vitodens 100, WB1A

DHW and external heat demand not working

Applies to: Vitodens 200, WB2B

Boiler will not start the trial for ignition

Applies to: Vitodens 200/222

Boiler displays fault code A2 or A4

Applies to: Vitodens 200, WB2B

Thermostat operation with Vitodens 200/222

Applies to: Vitodens 200/222

Boiler is not responding to a call for heat

Applies to: Vitodens 200, WB2B

Thermostat operation with Vitotronic 300-K

Applies to: Vitotronic 300-K, MW2C

Burner is locked out with fault code F8

Applies to: Vitocrossal 200, CM2

Detailed fault codes at coding address 38

Applies to: Vitodens 200/222

Burner is locked out with fault code F6

Applies to: Vitocrossal 300, CU3A

Burner is locked out with fault code F4

Applies to: Vitocrossal 200, CM2

Boiler will not switch to heating or DHW mode

Applies to: Vitodens 100-W, B1KE-199

ViCare registration results in E10 / E12 error

Applies to: Vitodens 100/200

Replacement BCU and HMU units must be configured prior to installation

Applies to: Vitocrossal 200, CI2

Product manuals

Fault code checker

Serial number locator