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What is the Vaillant boiler F.64 fault / error code?

2 Answers

Answered by BoilerOne

25th May 2019

BoilerOne answered the question "What is the Vaillant boiler F.64 fault / error code?"

A vaillant boiler with an error code F.64 is related to defective electronics or the flow and return sensors are defective, likely causes of this is Flow or back flow NTC has short circuited, or an electronic fault BoilerOne recommend you consult a gas safe registered engineer to diagnose the problem.

Answered by Landlord & Homeowner Gas Services

9th February 2019

Landlord & Homeowner Gas Services answered the question "What is the Vaillant boiler F.64 fault / error code?"

Hi, I’m Greg from Landlord & Homeowner Gas Services The F.64 fault code on a Vaillant boiler is due to a electronics / sensor fault The likely causes of this fault are: - Short circuit in the flow / return sensor - Defective electronics Thanks Greg Landlord & Homeowner Gas Services

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