First Co Fan Coil Unit

1783 Views 8 Replies 5 Participants Last post by supers05, Apr 7, 2016

renostyle

Discussion Starter · Apr 6, 2016

Hi. I have a First Co Fan Coil Unit in my condo. Model no. 24RAOT-3.

The unit blower turns itself on for about 30 seconds at a time when the thermostat is in the OFF position. It does this randomly and without warning.

Any ideas how I can troubleshoot this? thanks!

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Bret86844

· #2 · Apr 6, 2016

I looked on First Co's website and could not find a unit with that model #. Do you have a picture of the name plate?

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Bret86844

· #4 · Apr 6, 2016

Found the wiring diagram here. There's not much to it. If the heating and/or cooling also comes on, I'd say the thermostat is bad. If it's the fan only, then maybe the fan relay.

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Bret86844

· #6 · Apr 6, 2016

Probably, but hopefully someone else can chime in. My experience is on the design side, not the service side.

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