If the outdoor unit is not shutting off, your indoor coil will freeze up when the thermostat "satisfies" and shuts off the blower. The most common cause of a non-stop outdoor unit is the contactor. This part is usually black or brown in color. The line voltage wires that come from the service disconnect to the outdoor unit hook up directly to this contactor. If you shut all the power off (circuit breakers), the outdoor unit will shut off. You might be able to tap on the contactor to "free" it. This might allow the unit to work for a little while, but 99 times out of 100, once the contactor starts sticking, it will continue to stick. Replace the Contactor. Extra precaution needs to be taken as there are two seperate voltage sources......240 volts from your circuit breaker box and 24 volts from the air handler. You should use a voltage tester prior to performing any electrical work. http://www.youtube.com/watch?v=lywcF7Lt2n0
I hope you found this information helpful. Good Luck! :-)
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If the outdoor unit is not shutting off, your indoor coil will freeze up when the thermostat "satisfies" and shuts off the blower. The most common cause of a non-stop outdoor unit is the contactor. This part is usually black or brown in color. The line voltage wires that come from the service disconnect to the outdoor unit hook up directly to this contactor. If you shut all the power off (circuit breakers), the outdoor unit will shut off. You might be able to tap on the contactor to "free" it. This might allow the unit to work for a little while, but 99 times out of 100, once the contactor starts sticking, it will continue to stick. Replace the Contactor. Extra precaution needs to be taken as there are two seperate voltage sources......240 volts from your circuit breaker box and 24 volts from the air handler. You should use a voltage tester prior to performing any electrical work.
http://www.youtube.com/watch?v=lywcF7Lt2n0
I hope you found this information helpful.
Good Luck! :-)