Question about Ruud Central System Air Conditioner

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Fan Won't Start

The thermostat clicks when I turn it down but the a/c unit won't turn on. Fan won't even run when I set thermostat to "Fan" (manual).

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  • michakee Dec 03, 2008

    I have the same problem and I have no 24v to the thermaostat , Ihave checked the fuse in the handler and replaced the swtiching relay and the same problem still existsfor my ruud model UBHB21J11NHDA air handling unit this model was built in 1999.

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Check your circuit breakers.

Posted on Oct 30, 2008

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