I have a Goodman air handler unit (Mod # AWUF361016BA) and heat pump. I've tried two different thermostats, the present one being a Honeywell RTHL3550. With both thermostats, whenever I turn on the heat, the auxiliary heat comes on within a minute or two. No matter the temperature I set the thermostat to, even when the set temp is within a degree of the thermostat house temp, the heat strips come on. Since this has been the case with two thermostats, I'm thinking the thermostat wiring is not correct. I'm including some pics for verifying the wiring. I would sure appreciate it if someone could verify this wiring or give me some pointers. Last winter's power bills were horrendous. Here are pics for more detail: Air Handler Details [IMG]http://imageshack.com/a/img633/4432/kc0cQg.jpg[/IMG] Air Handler Schematic [IMG]http://imageshack.com/a/img910/3644/cHO853.jpg[/IMG] Honeywell Thermostat [IMG]http://imageshack.com/a/img903/2770/6kZpqC.jpg[/IMG] Honeywell Thermostat Wiring [IMG]http://imageshack.com/a/img907/1504/i6udR9.jpg[/IMG] Thermostat Wiring at Air Handler [IMG]http://imageshack.com/a/img903/7391/6M7db5.jpg[/IMG]

I'm looking for some guidance installing a new t-stat in my home without a C wire. I've looked into the Venstar add-a-wire and the Honeywell WireSaver but neither of them make sense for my application. Here's what I have in my system currently: At the HVAC: [IMG]http://gflett.net/hvac.jpg[/IMG] C - not connected on either side of terminal Y - yellow t-stat wire, connected to HVAC system G - green t-stat wire, connected to HVAC system R - red t-stat wire, connected to HVAC system W - white t-stat wire, connected to HVAC system B - blue t-stat wire, connected to HVAC system The thermostat: [IMG]http://gflett.net/old-t-stat.jpg[/IMG] Y1 - yellow t-stat wire G - green t-stat wire Rc - red t-stat wire Y/O - white t-stat wire W/B - blue t-stat wire Rh - jumper from Rc New thermostat: I've tried a few different combinations but none have been successful. Here's a pic of the unit though... [IMG]http://gflett.net/new-t-stat.jpg[/IMG] (this is a stock photo so do not pay attention to t-stat wire colors, use above reference for colors of my wire.) From the wiring directions I don't have a C wire and I need one but I tried to put the G wire into the C and although the thermostat powered on it was not able to turn on the fan and displayed the message "waiting for equipment" I tried... C - blue t-stat wire W-O/B - white t-state wire Y - yellow t-stat wire G - green t-stat wire Rc - red t-stat wire ...HVAC system did not power on C - green t-stat wire W-O/B - blue t-stat wire Y - white t-stat wire Y2 - yellow t-tsat wire Rc - red t-stat wire ...HVAC system did not power on I assume I need 6 wires to make this work, using: C - new wire I don't have W-O/B - blue t-stat wire G - green t-stat wire Y - white t-stat wire Y2 - yellow t-tsat wire Rc - red t-stat wire So the question is, how do I get a C wire? My HVAC unit has the spot for one but it's not connected into the system so adding a t-stat wire to the C terminal won't help any. My t-stat wire is actually a 6 wire cable so there is an extra wire I can use without having to pull a new t-stat wire through, but that's only if I can make my HVAC unit provide the power to that cable. Any help would be greatly appreciated! Thanks!