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Discussion Starter · #1 ·
i recently purchased my astra and i noticed when my fan speed is maximum the heating temperature drops. dial is speeds 1-5 and then next speed is a fan symbol. when on speeds 1-5 temp is good and hot. when i turn to fan symbol speed increases but temp drops to almost luke warm. is this normal if not what could this be
 

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By increasing the speed, you're putting more demand on the heating system. There comes a point where you're taking more heat out of it than it can produce.

If you're only pottering around (as opposed to belting it down the motorway) then at this time of year when the weather is cold, you'll notice what you're experiencing.
 
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