Iím trying to finess an electronic replacement for the Sauer Danfoss hydraulic fan controller along the lines of what CC Rider / RonandSue74 posted about back in September. https://www.irv2.com/forums/f112/sau...on-501809.html
That uses a PWM speed controller to set a speed between slow, and wide open. But Iím hoping add a relay triggered by a tie into the trinary valve of the OTR A/C, to boost fan speed when the A/C kicks on.
My trinary valve has four wires out of the valve, but two of those connect to a single wire 4Ē away. So Iím imagining this is the hot side of things, and the other two should be NC-switched, one to the compressor, and one to the fan controller. Both are black. HBut then they all disappear into a thick bundle of wires in the wrapped and bound loom of wires!
So I thought Iíd identify the fan boost line, by excluding the compressor wire. A single wire exits the loom at the compressor, but I cannot detect continuity to anything running to the trinary!
Is there something else, like a relay, between the trinary and the compressor? Any idea WHERE? Anyone have a schematic for this? Iím stalled.
Mike & Lynn
2000 Country Coach Allure "La Pine", #30536 pushed by an 2014 Ruby Red Grand Cherokee. 38,650 miles run as of 10/17/2022. Retired 12/2017, and loving it.