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Judy BennettAug 28, 2025
What causes fault code A7 on a Viessmann B2TB004?
- HHoward DunnAug 28, 2025
If your Viessmann Boiler displays fault code A7, it means the programming unit is faulty. Replace programming unit.
To Next PageTo Next PageWhat causes fault code A7 on a Viessmann B2TB004?
If your Viessmann Boiler displays fault code A7, it means the programming unit is faulty. Replace programming unit.
How to resolve fault code 59 on a Viessmann B2TB004?
If your Viessmann Boiler displays fault code 59, it indicates a lead break in the outlet temperature sensor. Check sensor.
Why is my Viessmann B2TB004 displaying fault code 51?
If your Viessmann Boiler displays fault code 51, it indicates a short circuit in the outlet temperature sensor. Check sensor.
What should I do if my Viessmann Boiler shows fault code 58?
If your Viessmann Boiler displays fault code 58, it indicates a lead break in the cylinder temperature sensor. Check sensors.
What does fault code 50 mean on a Viessmann Boiler?
If your Viessmann Boiler displays fault code 50, it indicates a short circuit in the cylinder temperature sensor. Check the sensors.
How do I fix fault code 28 on my Viessmann B2TB004 Boiler?
If your Viessmann Boiler displays fault code 28, it indicates a lead break in the system flow temperature sensor. Check the low loss header sensor.
What should I do if my Viessmann Boiler shows fault code bE?
If your Viessmann Boiler displays fault code bE, it indicates a communication error with the remote control Vitotrol heating circuit 3 (with mixer). Check connections, lead, coding address "A0" and remote control settings.
What to do if Viessmann B2TB004 Boiler displays fault code 38?
If your Viessmann Boiler displays fault code 38, it indicates a lead break in the boiler water temperature sensor. Check the boiler water temperature sensor.
Why is my Viessmann Boiler showing fault code 30?
If your Viessmann Boiler displays fault code 30, this indicates a short circuit in the boiler water temperature sensor. Check the boiler water temperature sensor.
What does fault code 18 mean on my Viessmann Boiler?
If your Viessmann Boiler displays fault code 18, it indicates a lead break in the outside temperature sensor. Check the outside temperature sensor.
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