I have two trane heat pumps working together with one tstat. To clear the air it wasn’t my install. Both systems are r** pressures are good in heat mode but as soon as I put them in ac mode they both together cycle down back up run ** seconds then back down. Fan slows compressor runs and it almost sounds like it’s going into defrost but isn’t! I’ve checked the low voltage y to common*red to common exc... what is causing these systems to act this way. They are * phase light commercial applications voltage wise. I replaced float switches and tstat already I found them to be a problem as well. Please help! Thank you
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