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Thread: Trane RTAA Winding temp alarm
06-19-2011, 12:44 PM #14
06-21-2011, 12:29 PM #15
The easiest way to check your t-stat (klixon) is: whith the chiller running touch the motor area, right below the motor terminal plate, those motor winding t-stats open at 221°F and re-close at 180°F, if they are in fact protecting the motor on high temp you should be able to feel it (hot), with a suction SH of 4-5°F the motor should be cool, if that is the case you have a t-stat out of calibration and you need to find which of the 3 is and by-pass it.What's another word for Thesaurus?
- Steven Wright
06-21-2011, 07:52 PM #16
06-21-2011, 10:16 PM #17Professional Member*
- Join Date
- May 2000
- Houston, TX, USA
Had a similar issue on a comp with nuissance trips. Found issue to be the terminals for the stats were sweating and causing them to rust and therefore did not have a good contact. Resolved by cleaning terminals at comp withs some sand cloth and then connecting wiring and coating with corrosion inhibitor. SP400 I believe, got if from Grainger.
04-20-2012, 01:21 PM #18Regular Guest
- Join Date
- Apr 2012
- So. Fl.
RTAA hi mot. Temp. Resolved
Bklyntek, here, hope all is well. Had a similar problem last
Year. New contract, owner had RTAA070.compB tripping hi
Motor winding temp. Stumped me for awhile, finallyclimbed
On top, found c fans right behind bad. My fault assummed
They were for ambient controlled. Well, changed both and
Never had a problem to this day. At same time, changed
Both oil filters on.compressors. Just thought I'd chime in,
Take care, guys.
04-21-2012, 04:08 PM #19