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03-18-2012, 02:35 PM #1Professional Member
- Join Date
- Sep 2009
What type of signal should p1 and p2 recieve?
04-09-2012, 08:36 AM #2
P1-P2 P on me
spyder- None, all it is there for is to enable periodic pump-out as needed when jumpered, after 1/2 hour if the low pressure switch on the idle compressor makes (rise in pressure) it will start that compressor to pump out the evaporator section, suction line and crankcase. I've always installed a jumper on those terminals. Trane charged some ungodly amount to include PP as an optional control, when they finally caught on the engineers replaced the W7900. Hope this helps.-GeoOf all the things I have lost in my life, I miss my mind the most-GEO