I recently purchased a Honeywell RTH7500 to replace a Trane Baystat240. I have a multistage electric heatpump and A/C. I was about to call my local HVAC contractor to install it, when I had the idea of at least reading the manual first and seeing how complicated the install would be. The manual left me feeling like I could do it. (after all I am not completly ignorant - just mostly). The wiring diagram looked straight forward, this is what I came up with:
Baystat240 - Honeywell red (R) - R black (T) - not used Orange(O) - O Green (G) - G Yellow(Y) - Y Brown (X2) - E Blue (B) - C White (W) - Aux
Seemed real simple - and the problem that resulted seems like it may be real simple: When the heat is on the thermostat - I get ac, and when the ac is on I get heat. Is it time to follow my first instinct of calling someone - or is this a simple silly-ass problem?
Thanks for the help