A/C Question

Outside fan was not coming on at start-up. I could turn the fan with a stick and get it to start running. Replaced capacitor and started a/c back up but fan still does not come on. It will only work if I turn it with a stick. What could be the problem?
  7 answers
  • Could be the incorrect capacitor? Incorrectly wired new cap? Loose wire? faulty motor? Does it spin freely when power is off? If cap is proper, sounds as though the fan motor is faulty. Age?

  • Kenny Kenny on Aug 05, 2014
    i checked the motor specs.. it says 5 mfd 370v...the cap a got is a 5 mfd 440v...rechecked the connectors ...installed correctly...no loose connections...fan will turn freely when unit is off.....motor was replaced 3 years ago...

  • ideally the cap should be exactly what the motor requires. But that slight difference in voltage should not be an issue. Sounds as though the motor is faulty. If you can see what size cap is required for the motor It should be written on its side most likely right under the mount where you cannot see it. But that is the cheapest fix first. If the cap is correctly sized you may need to get new motor. Normally when a motor is replaced so is the cap. Was that done if you remember?

  • We know its not the power supply as you say it runs when you give it a shove. So its either the cap, first thing to determine if its right with the motor then only thing left is the motor. :(

  • Kenny Kenny on Aug 05, 2014
    the fan motor has 5 mfd 370v on the side of casing....i'm not sure what the condenser v is...it could be 440v...i'm going to have motor checked tomorrow...thanks for reply...

  • unless your commercial your a 220 volt system. Have them check the cap first if they have the tester. Could have gone bad. Keep us posted on how you make out.

  • Kenny Kenny on Aug 11, 2014
    replaced the fan motor today...everything appears to be working good...thanks for your help...