HAVC Unit Won't Come On - HVAC - DIY Chatroom Home Improvement Forum

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Old 05-06-2012, 10:48 AM   #1
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HAVC unit won't come on

This morning I noticed that my main floor wasn't cooling. I checked and found the condensation pump full ( little giant model VCMA-15ULS ). I disconnected the hose from the unit to the pump, drained it, dumped the pump and reconnected it.

The aprilaire 8446 display unit clicks when I turn down the temperature but the hvac unit itself ( model FA4CNF030, doesn't show manufacturer ) never comes on. I've tried turning the circuit on / off at the power panel.

I also tried swapping out pumps with another and disconnecting the switch that is in the pan at the bottom of the unit for condensation flooding. Each time I powered the unit off and even hit reset on the aprilaire control unit at the wall.

What else can I do to try and get this puppy to come alive?


Last edited by atlacfence; 05-06-2012 at 11:29 AM.
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