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Brink Flair 400 preheater.


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I was just browsing through my MVHR stats, wondering how often the preheater had been on in this cold snap and it would appear that it's not been on at all, well at least for the last week which I find quite surprising. 

 

I then see that it has 4 different settings: OFF - AUTO - LOCK CURRENT - LOCK MAXIMUM. 

 

Of course mine is set to 'OFF' the problem I have is that I can't find any way of selecting it to 'AUTO' not on the wall mounted control unit, the app or the web access. Does anyone have any idea how I can set my preheater to 'AUTO'?

 

Also, how much preheater activity have others seen in these current conditions? Does it come on just now and again or is it on almost permanently?

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Depending on how efficient your heat exchanger is, in UK temperature they are not needed, maybe why it's not coming on.  We had -9 the other day and the antifreeze function never even came on, as far as I could see.

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37 minutes ago, JohnMo said:

Depending on how efficient your heat exchanger is, in UK temperature they are not needed, maybe why it's not coming on.  We had -9 the other day and the antifreeze function never even came on, as far as I could see.

 

Ours has twice this week for an hour or so overnight. Both incoming and outgoing air streams were below freezing so the unit lowered the supply fan speed to avoid freezing up the heat exchanger.

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