Make sure outdoor fan is turning if it is a split unit. Could be the compressor is not running due to a bad start capacitor or possible open winding inside sealed compressor. First insure that all wiring is secure and making contact on all connections. If the outdoor fan by chance is not running it could be a bad fan motor.Also if the fan and the compressor will not run it could be a contact relay bad or dirty contacts. .....note....Capacitor or Contact relay are cheap items around $10 to $20 each but a compressor is average $350 to $600 and a Condenser fan motor can be $80 to $140 just cost alone! BEWARE OF HIGH VOLTAGE WHEN TESTING ELECTRICLE DEVICES!!!! To test the compressor there are three wires that will need unplugged on the side to it. With all wires off and the main power disconnect or breaker pulled/shut off. Take an ohm meter and touch the leads to the contacts of the compressor. There is usually a Common-Start-an Run. Measure for ohms between Common to Start----then Common to Run------then Start to Run------you should get a resistance reading between each with Start to Run being the highest number! If any are open and no resistance is measure then you have an open winding and will need a new compressor. It is not repairable and must be replaced. If you take an ohm reading from any of the three post to the housing or copper tube of the suction line or discharge line and get a reading this would mean you have a shorted winding and must replace compressor aswell. Goodluck!
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Make sure outdoor fan is turning if it is a split unit. Could be the compressor is not running due to a bad start capacitor or possible open winding inside sealed compressor. First insure that all wiring is secure and making contact on all connections. If the outdoor fan by chance is not running it could be a bad fan motor.Also if the fan and the compressor will not run it could be a contact relay bad or dirty contacts. .....note....Capacitor or Contact relay are cheap items around $10 to $20 each but a compressor is average $350 to $600 and a Condenser fan motor can be $80 to $140 just cost alone! BEWARE OF HIGH VOLTAGE WHEN TESTING ELECTRICLE DEVICES!!!! To test the compressor there are three wires that will need unplugged on the side to it. With all wires off and the main power disconnect or breaker pulled/shut off. Take an ohm meter and touch the leads to the contacts of the compressor. There is usually a Common-Start-an Run. Measure for ohms between Common to Start----then Common to Run------then Start to Run------you should get a resistance reading between each with Start to Run being the highest number! If any are open and no resistance is measure then you have an open winding and will need a new compressor. It is not repairable and must be replaced. If you take an ohm reading from any of the three post to the housing or copper tube of the suction line or discharge line and get a reading this would mean you have a shorted winding and must replace compressor aswell. Goodluck!
Hi,
Here is a tip about trouble shooting your air conditioner...
Air Conditioner Trouble -Review the Possibilities
http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi
heatman101