Goodman RTU

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Goodman RTU

Postby jtomrai1 » Tue Aug 30, 2011 9:34 pm

I have a Goodman RTU that am having issues with. The model# is weathered completely away. It is an R-22, 5-ton, gas heat. The draft inducer motor is basically short cycling. It turns on for 1-1/2 seconds, then turns off. It is trying to make the circuit, but is failing. I have checked the wiring diagram, everything checks out. I have checked the high limit switch, it's fine. The compressor Model# CRN5-0500-PFV-970. Serial#01H03750B. I have replaced the circuit board because it had 2 burned out resistors. The inducer fan was initially running constantly in heat mode, now it can't make the switch. Any suggestions?
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- Goodman RTU

Postby heatseeker » Wed Aug 31, 2011 8:48 am

Pressure switch possibly or the motor connections. Wired wrong the compressor has nothing to do with the inducer fan motor. are you running cool when the inducer short cycles or heat?
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