Question about Heating & Cooling
Old t-stat had :
W1, W2, X (these 3 were from same ''wire''), G, Rc, Rh (the two R's were wired together) and Y1
New Lux thermostat has available slots for:
W, Y, G, B, O, Rc, Rh, C
I have wired it using several ideas and tips found, but still have not had any luck with the system working....
one main concern is what to do with the X, and then the 2 W's...do they go together or??
Unless you have a 2 stage heat system, all you wire up is W1
X is typically only used for humidifiers, dehumidifiers, air cleaners adn other such accesories. If you have none of these, X is unused.
It is typical to find that the original installer wired black or brown to X at the T-stat and left it unhooked at the unit. In such case, just leave X unused.
If your wires are
And if your system is a typical furnace with airconditioner then wire it liek this,
Red to Rc
Yellow to Y
green to G
White to W1
Blue to C (common)
Your installers manual will let you know if you shouild leave the jumper between the Rc and Rh terminals.
O terminal is only used for heat pumps and getas the orange wire.
If your T-stast has batteries and does not require an external power source, then you do not have to have the blue wire to C terminal.
If for some odd reason the maqnual does not inform you obout the jumper to RC/RH Try it firt without the jumper. Run it through all cycles. If all modes do not operate, install the jumper.
Posted on Jan 24, 2009
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Posted on Jan 02, 2017
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