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redwhitekat
05-15-2011, 08:16 PM
hi all looking for a wiring diagram for a trane condesing unit, just trying to understand how this beast operates and sequence of operation, specially the call for cooling and bringing on condensor fan motors, model # is ravbc402be03b, serial # j88h81951.
if anyone knows a few things about this machine i would appreciated, had a call on one wiring diagram gone, reset unit compressor started but theres all kinds of relays and contactors, im sure i'll get a call on it soon, as one compressor is grounded, and its pretty old.

TAC Service
05-15-2011, 10:41 PM
ravbc402be03b does not look like a good number.

maxster
05-16-2011, 08:32 AM
how about the physical shape if your standing in front of it how many fans compressor hermetic or not 88' if you see temperature controls in the control panel with bulbs mounted on the side that the ambient controls for the CDs with a sequencer adj also.most have the fan nearest the control panel start right off with either compressor.....RAUBC ??

mark_ballard
05-16-2011, 10:00 AM
This is actually an RAUBC by the serial number. See if the attached help.

redwhitekat
05-17-2011, 09:01 PM
thanks guys yes i wrote down wrong m # thanks mark for the info, now happy reading for me lol