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Xringer · 11-11-16, 09:34 AM

CN2 looks like it's got frequency step input controls. 5 or 10 Hz up or down. And a common / ground?
Still not seeing the comm line to the IDU.
So maybe those Up & down lines get bumped by a controller that runs the IDU? fed by IR remote..
Or maybe the IDU runs as a Stand-alone, using Fan-mode? (Sanyo IDU works in Fan, without anything but 230vac)..

Is CN3 the 4way-valve control line??

Maybe I can get someone to translate some of this for us. I'll post if I get any info.

11-11-16, 09:34 AM	#16
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	CN2 looks like it's got frequency step input controls. 5 or 10 Hz up or down. And a common / ground? Still not seeing the comm line to the IDU. So maybe those Up & down lines get bumped by a controller that runs the IDU? fed by IR remote.. Or maybe the IDU runs as a Stand-alone, using Fan-mode? (Sanyo IDU works in Fan, without anything but 230vac).. Is CN3 the 4way-valve control line?? Maybe I can get someone to translate some of this for us. I'll post if I get any info. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..