Question about Carrier Heating & Cooling
Start with the fan motor capacitor, check it . usually 5, 7.5 or 10 microfareds.check it with a meter on the uf scale, or label wires pull it and take to electric motor shop and they can check it. if cap is good then trace wires from motor to sources of power and see if you have 230 volts to motor . if you do then motors shot. label all wires and note exactly where the fan blade is located in relation to the grill guard. sand motor shaft smooth. oil loosen bolts on blade hub and gently remove. take old motor to motor shop and buy exact replacement motor. or have motor shop man show you where to place wires. usually black and white to power, brown and brown with white stripe to the capacitor. some motors wired up with three wires. see side of motor or directions in box or ask motor man to explain. resecure new motor exactly as removed , reinstall hub and blade. if you think blade is to rusted to get off or you mess it up just take it to the motor shop. he sells blades to! just be sure you have good clearance when you get done, cap off or tape off any unused leads. i usually use little bits if stat wire to secure wires up and out of the way of the fan blade if needed. they last longer than plasties and are not effected by the sun etc. check rotation of blade. cupped or curved side into the wind . check amps on new motor. should pull less than rated . a 2.9 may pull 2.1 etc. a new motor always deserves and usually uses a different size capacitor than an old one. they are cheap anyway and not worth skipping and having a redo. good luck........
Posted on Nov 13, 2008
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Posted on Jan 02, 2017
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