September 2012
I have a central A/C unit and the inside fan blower has a control module referred to as an "r" mod. It has a few components on it and is designed to kick start the fan motor. I can’t afford the $1200 to get it replaced. Can I just replace the bad components on the module? It looks like 2 small capacitors and an electro magnet. It’s a Carrier Tech 200 SS.
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Of course you can replace the bad components, but how do you know the module is bad? Perhaps the motor is bad.
A motor starter usually involves a large capacitor, but I guess an inductor could be used. I suspect that the fan has to be kick started because the compressor will overheat and shut down if the fan is not running.
If the 'device' has 2 wires going to it and three wires out to the motor then it is likely a motor starter. They can be a thermal device with a relay and that is most common.
Many compressors use them and they do fail. Most any A/C parts counter clerk should be able to match it to a direct or universal replacement for about $20.
