Rheem

[josetorrres]

I have a Rheem heatpump that is about 15 yrs. I want to change the thermostat but can't figure out what the wiring is. This is how the original is wired:

themostat wirecolor wiretag
G green G
R red R
B orange B
O none
Y yellow Y
W2 white W2
X brown X
L none
E none

I was wanting to install a Luxlight TX1500, but the diagrams don't coincide with what I already have. The conections on it are: G,Y,W,RH,B,O and RC.
The lux says it will work with single stage heatpumps.
Can I even use this on my system? If so, can somebody help me with the connections. I'm good with computers, but I don't want to mess up my heatpump.

[Freeze Stat]

You could trace each wire from the t-stat to the terminal block on the indoor and outdoor units. Verify the power is OFF before you touch any wires. You would need to know the function of each terminal on the t-stat (old and new), and how to set the new t-stat up to operate your heat pump. The new t-stat may not be compatible with your heat pump (it probably is if configured correctly).

If you want to do it yourself, get a good book on residential heat pumps (I assume this is residential), or hire a qualified contractor to install a new t-stat and check your system thoroughly.

Good Luck!

[rtu]

Originally posted by josetorrres
I have a Rheem heatpump that is about 15 yrs. I want to change the thermostat but can't figure out what the wiring is. This is how the original is wired:

themostat wirecolor wiretag
G green G
R red R
B orange B
O none
Y yellow Y
W2 white W2
X brown X
L none
E none

I was wanting to install a Luxlight TX1500, but the diagrams don't coincide with what I already have. The conections on it are: G,Y,W,RH,B,O and RC.
The lux says it will work with single stage heatpumps.
Can I even use this on my system? If so, can somebody help me with the connections. I'm good with computers, but I don't want to mess up my heatpump.

From info posted Stat won't work
You need a 2 stage Hp T-stat

[jimmyj]

Going back to my HVAC life, start with the existing t-stat and do a model cross reference. Most t-stat man have a cross reference chart. As a rule of thumb most HP stats energize the G term and the Y term on a call for heat or cool, the channge-over term O is either energized on a call for heat or cool depending on the HP model. Honeywell makes a great line of res t-stats and has a good cross reference list.