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Old 23rd October 2019, 08:03   #6
Rev Jules
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Rover 75 Tourer+

Join Date: Mar 2011
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Quote:
Originally Posted by HarryM1BYT View Post
From memory, so if someone's memory is more accurate?

There is a signal from the ECU, which indicates the engine is running. That passes through a thermal switch in the front bumper area which closes at <5C, that signal then passes to the FBH.

Net result is - FBH only comes on when engine is running and temperature is less than 5C. It comes on automatically in those circumstances.

Harry, many thanks for the answer, that is all I wanted.
So the heater will not come on automatically without the engine running.

Cheers.

Rev
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