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Jeff240sx 06-30-2010 08:39 PM

Trying to install new thermostat
I'm completely lost here. Why aren't these things standardized??

Anyway, I don't know my system type. I know my airhandler is a Goodman ARUF.

The current thermostat:
E - Brown
Y - Yellow
O - Orange
W2 - White
R - Red
G - Green

C & B are un-used.

There's a blue wire tucked back into the wall.

The thermostat I'm looking at has:
W, Y, G, B, O, Rc, Rh, and C. The R's are jumpered together.

For this, does W2 just go into the new W? And then I'm missing a slot for the E wire.
And I've still got that mystery blue wire in the wall hole.

Can anyone help out? Or at least point me to figuring out my AC/Heat setup, a tstat that works with it, etc.

Thank you all in advance.

Marty S. 07-01-2010 06:24 AM

Sounds like you have a heat pump with back up elements and the new stat isn't compatable.

beenthere 07-01-2010 06:50 AM

Post brand and model number of new thermostat.

Jeff240sx 07-01-2010 07:32 AM


Originally Posted by beenthere (Post 463871)
Post brand and model number of new thermostat.

It's the Lux TS9000TS programmable. A Lux digital is currently hooked up.

beenthere 07-01-2010 11:06 AM

That thermostat is not compatible with heat pumps that have aux heat.

The W has to be jumpered to the Y. To make the heat pump run in heat mode. So you would not have aux heat when you need it.
Look for a thermostat that is listed as for use on heat pumps with aux heat.

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