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Question About Trane Heat Pump BWD730A100B1
wiring digram...

buzzing from unit. fan moves freely, acts like comp. is frozen up. thanks, bseaton8507@aol.com

Asked by Bill on 05/23/2010 3  Answers

ManualsOnline posted an answer 14 years, 4 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

Scott Buehler posted an answer 14 years, 4 months ago

3 a (comp)ressor will produce heat through the discharge line . A seized comp often will blow the fuses . Look at the rating on the comp for LRA (locked Rotor amperage), measure the amp draw on the input when energized. If it is close to LRA and stays there, the comp is locked up. check start or run capacitors, if any, with ohm meter. If these are ok but LRA has occurred try a hard start capacitor piggybacked onto existing capacitor. If this jars it loose you may get some more life out of it
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wm kemner posted an answer 12 years, 9 months ago

0 need wiring diagram--defrost cycle doesn't happen of unit is bad.kemnent@juno.com
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Scott Buehler posted an answer 12 years, 8 months ago

0 I would concur with the first comment. What I would add is to check the ohm readings on the terminals of compressor and see if c-r +c-s = s-r and run a test to ground with a megohmer. Even if the compressor checks out electrically it can be a mechanical problem which results in LRA and opening of internal overload protectors. If the starting components are good and from a cold start the compressor fails to start, your compressor is bad. Wiring diagram won't help. Also make sure power is making it to compressor leads. Could there be a bad connection somewhere?
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