Question about Heating & Cooling
I would say that the floors are individually selectable, and maybe the control is not set for the top floor to come on. If it is, then most likely the fan unit is not working and should be tested.
First check the fan motor with the power off, then check the supply with the power on. ***** DANGER OF SHOCK ******
Only do this test if competent and have the correct tools and training.
Posted on Jun 28, 2008
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Posted on Jan 02, 2017
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