I got my P&M Optimizer fired up today, am real happy with it so far. Had one glitch and need a little help. I wired in a Honeywell L6006 aquastat in so I could control OWB and forced air gas furnace with one thermostat. It worked fine except that I went ouside and heard my AC running. I shut off 220 breaker to the AC and thought that would do it, it did shut off, but could hear humming coming from it, I assume a solenoid to turn it on? I disconnected the thermosat wires going to the outside unit and everything is working fine. I thought I had it wired right and it does work right ie: when 6006 is set at 100* only the fan comes on. I wired the R on the 6006 to the W on the thermostat, the B on the 6006 to the W on the furnace, and the W to the G terminals on both therm. and furnace. Didn't mess with the Y or comp. terminals at all. Any ideas? Thanks for the help. I did take pictures but can't get them off my I phone. Will try later.