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

S
Stephen ZhangSep 16, 2025
What does error code F9 mean on my Viessmann B2TB004?
- M
  Megan Scott DDSSep 16, 2025
  If your Viessmann Boiler displays error code F9, it means the fan speed is too low during the burner start. To address this, check the fan, the fan connecting cables and power supply, and the fan control. Then, press the reset button R.
S
Sharon DixonSep 16, 2025
What to do if Viessmann B2TB004 shows error code FA?
- O
  omarjeffersonSep 16, 2025
  If your Viessmann Boiler displays error code FA, it indicates that the fan is not at a standstill. To resolve this, check the fan, fan connecting cables, and fan control. Then, press reset button R.
C
Christina RandallSep 16, 2025
How do I fix a Viessmann B2TB004 Boiler displaying error code FC?
- T
  Tiffany JohnsonSep 16, 2025
  If your Viessmann Boiler displays error code FC, it indicates a gas train fault, faulty modulation valve control, or a blocked flue gas path. To resolve this, check the gas train and the flue gas system. Then, press reset button R.
D
Daniel MarquezSep 16, 2025
What does error code FE mean on a Viessmann B2TB004?
- K
  Kayla HullSep 17, 2025
  If your Viessmann Boiler displays error code FE, it indicates that the boiler coding card or main PCB is faulty. To attempt a fix, press reset button R. If the fault persists, replace the boiler coding card or control unit.
R
rickyjonesSep 17, 2025
What causes error code E9 on a Viessmann B2TB004?
- J
  Justin CollinsSep 17, 2025
  Error code E9 on a Viessmann Boiler indicates that the ionisation current lies outside the permissible range during calibration. To resolve this, check the ionisation electrode and cable, check the flue gas system for tightness, and press reset button R.
G
gnguyenSep 18, 2025
What does error code EA mean on my Viessmann B2TB004?
- J
  Jennifer WuSep 18, 2025
  If your Viessmann Boiler displays error code EA, it indicates that the ionisation current lies outside the permissible range during calibration. To resolve this, check the ionisation electrode and cable, and then press reset button R.
R
Richard WarrenSep 18, 2025
What does error code EC mean on my Viessmann B2TB004 Boiler?
- A
  Annette JonesSep 18, 2025
  If your Viessmann Boiler displays error code EC, it indicates that the ionisation current lies outside the permissible range during calibration. To resolve this, check the ionisation electrode and cable, then press reset button R.
G
gwalkerSep 18, 2025
Why does my Viessmann Boiler show error code Eb?
- F
  Frank LiSep 18, 2025
  If your Viessmann Boiler shows error code Eb, it indicates that heat draw-off is repeatedly too low during calibration. Initiate a heat draw-off. Switch the boiler OFF and ON again. Press reset button R. Set coding address 12:1. This special function leads to heat being transferred to the heating circuit during calibration.
W
Walter SmithSep 18, 2025
What should I do if my Viessmann B2TB004 Boiler displays error code FF?
- L
  ljohnsonSep 18, 2025
  If your Viessmann Boiler displays error code FF, it indicates an internal fault or that the reset button R is blocked. Try starting the equipment again. If it will not restart, replace the control unit.
W
William CastroSep 18, 2025
What does error code F8 indicate on a Viessmann Boiler?
- C
  christopher97Sep 18, 2025
  If your Viessmann Boiler displays error code F8, it indicates that the gas valve closes too late. To resolve this, check the gas train and both control paths. Then, press reset button R.