If I leave breaker off for a few days problem stops and seems to happen when it rains.
Sounds like the fan relay is getting voltage bleedover from the 24 volt wire. Could be the thermostat also but most likely there is a bare spot on the wire going from the fan relay to the terminal marked "G" on your thermostat that is touching the wire that goes to the terminal "R". Easiest way to fix this is to run new T-Stat wire from thermostat to the indoor unit or the blower motor if it is a package unit, making sure that the "R" and "G" wires have good insulation on them and are not touching. If you have an 8-wire T-stat wire you can sub out the wires marked "R" and "G" with different color wires that are not being used, just pay attention to how they hook up and you will not have to pull a new wire through the wall. Good luck!
SOURCE: Rheem Central Air united stopped working, no hum but power is there
It looks as if the 24 signal from the thermostat is not getting to the contactor. Or possibly the coil in the contactor itself is dead. Or a third option may be a bad control power board in the condensing unit itself. If you feel comfortable reading through these devices comment back. PLEASE REMEMBER THERE IS HIGH VOLTAGE INSIDE THE CONDENSER AND A CAPACITOR.
SOURCE: Compressor starts and doesn't stop
Relay for the compressor may be stuck ( Contacts welded) both the fan and the compressor should operate at the same time. Have the relay(s) checked and possibly replaced.
SOURCE: My extractor fan is leaking
sounds like
the extractor is mounted in a cold space, and the moist air is condensing on the cold fan as it exits,
the fan housing may need better insulation, and the flap valve in the exhaust pipe needs to be checked to ensure it is closing, and keeping cold air out
it is possible that condensate in the fan has fried the motor
something to check
SOURCE: Central Air Compressor Runs Constantly
Sounds like the contactor is stuck in the outside unit. Turn off the breaker or safety switch, remove the cover, and tap on the body of the contactor with a hammer handle or similar tool. If a click is heard you may have dislodged it and it may work for either a short time or indefinitely. (yeah ,I know that's kinda vague) Test it. If that doesn't clear it up, disconnect the thermostat wires just to make sure and re-test. If the compressor starts without the thermostat connected, you will need to replace the contactor. If you feel real handy, you could perhaps remove the cover, seperate the contacts with a screwdriver, dress the contacts with an emery board until smooth and shiny, and try again.
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This solved the problem. When the contractor ran the t-stat wire he left it unprotected across the pad up into the ac unit. It got nicked and the rain was shorting it out.
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