A6 - unit is running, but building is still cold, Unit is running, but building is still cold – LAARS NeoTherm NTV (Sizes 150–285 MBTU/h) - Service Manual User Manual
Page 18
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8
Service Manual NeoTherm 80 - NeoTherm 285
Unit is Running, But Building is Still Cold
A6
Yes
No
Clear it
Air inlet is
blocked?
Clean
Air intake
inside unit is
plugged?
Yes
No
Clean, blow out
(Gas/air mixture is correct,
but not enough gas/air
mixture is supplied.)
Dirty fan?
Yes
No
Burner and/or
heat exchanger
plugged?
Yes
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