Changing out my thermostate with non programmable.Which wires go where? Old wiring as shown. B - NO WIRE, O - ORANGE WIRE, W2 - WHITE WIRE AND A JUMPER GOING TO E, G - GREEN WIRE, E - JUMP WIRE GOING BACK TO W2, Y1 - YELLOW WIRE, Y2 - NO WIRE. NEW THREOSTAT TERMINALS: e - aUX - Y - G - O - L - R - B - C. New one is a Honeywell RTH3100C. Thanks for your help. Bob
E Back up heat/ white wire
AUX Jumper to E
Y yellow wire / Cooling - compressor
G Indoor fan Green wire
O Reversing valve energised in cooling most units Orange wire
L unknown. consult your manual Leave open
R Main power Red wire
B Reversing valve energised in Heat Rheem units only.
C Common second leg of power Blue wire.
To Stephen Brisbois
To Stephen Brisois. You answered my question on or about Aug. 30th. Relaceing thermostat with a Honeywell RTH3100C. Everything sounds good, but I only have 4 wires coming in. White, orange, green and yellow. If I follow your instructions and don't have a red wire on R or a C (Common second Leg blue)
Someone has done some creative wiring to your system. You will have to get into the air handler / A/C and see where each of thoes wires are connected. I would call a professional to avoid any damage due to miss wiring.
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