Viessmann B2TB004 - User Manual

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5461 889 - 16 01/2019

Installation Instructions

Vitodens 222-F, B2TB

Models 19, 35, 68, 125

Floor mounted, gas-fired condensing storage combi boiler

For operation with natural gas and liquid propane gas

Heating input: 12 to 125 MBH

3.5 to 37 kW

VITODENS

222-F

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Questions and Answers

B
Brandon HarrisAug 28, 2025
Why is my Viessmann B2TB004 Boiler showing fault code bb?
- K
  Kyle WiseAug 28, 2025
  If your Viessmann Boiler displays fault code bb, it indicates a communication error with the extension kit for heating circuit 3 (with mixer). Check extension kit connections and code.
P
Patricia WolfAug 28, 2025
How to fix fault code bC on Viessmann B2TB004 Boiler?
- S
  Sandy OrtizAug 29, 2025
  If your Viessmann Boiler displays fault code bC, it indicates a communication error with the remote control Vitotrol heating circuit 1 (without mixer). Check connections, lead, coding address "A0" and remote control settings.
R
rburtonSep 22, 2025
What does error code Ed mean on a Viessmann B2TB004?
- K
  Kayla BarnettSep 22, 2025
  If your Viessmann Boiler displays error code Ed, it indicates an internal fault. To resolve this, replace the control unit.
D
David LynchSep 23, 2025
What does error code E5 mean on a Viessmann B2TB004 Boiler?
- N
  newmanrobertSep 23, 2025
  If your Viessmann Boiler displays error code E5, it indicates a fault with the flame amplifier. To resolve this, replace the control unit.
P
Paula MercerSep 23, 2025
What does error code E4 mean on my Viessmann B2TB004 Boiler?
- R
  Richard YangSep 23, 2025
  If your Viessmann Boiler displays error code E4, it indicates a fault in the supply voltage of 24 V. To resolve this, replace the control unit.
M
Megan CostaSep 8, 2025
What does Fault Code dA mean on my Viessmann B2TB004 Boiler?
- M
  Mark JamesSep 8, 2025
  If your Viessmann Boiler displays Fault Code dA, there is a short circuit in the room temperature sensor for heating circuit 1 (without mixer). Check the room temperature sensor for heating circuit 1.
U
usalazarAug 30, 2025
What causes fault code C3 on a Viessmann B2TB004 Boiler?
- M
  Mrs. Barbara RoseAug 30, 2025
  If your Viessmann Boiler displays fault code C3, it indicates an Extension AM1 communication error. Check electrical connections.
T
Tiffany BruceAug 30, 2025
How do I fix fault code C4 on my Viessmann B2TB004 Boiler?
- M
  Mary ColemanAug 30, 2025
  If your Viessmann Boiler displays fault code C4, it indicates a communication error with the Open Therm extension. Check Open Therm extension.
S
Stacy HunterAug 30, 2025
What does fault code C5 mean on a Viessmann B2TB004 Boiler?
- E
  elizabeth58Aug 30, 2025
  If your Viessmann Boiler displays fault code C5, it indicates a communication error with the variable speed internal pump. Check the setting of coding address "30".
K
Kristin MartinezAug 30, 2025
What should I do if my Viessmann B2TB004 Boiler shows fault code C6?
- M
  Maria DiazAug 30, 2025
  If your Viessmann Boiler displays fault code C6, it indicates a communication error with the external variable speed heating circuit pump, heating circuit 2 (with mixer). Check setting of coding address "E5".