Honeywell RTH7500 Wire Problem - http://www.hvacmechanic.com/ Forums


Original message

shencl

130.13.96.103

"Honeywell RTH7500 Wire Problem" , posted Sat 26 Jan 20:24user profileedit/delete messagepost reply


My current Braeburn 3000 non-programmable thermostate wire is as below: And I am not sure I have heat pump or just heat/cool(most possibility)

Wire Braeburn 3000
O --->O
Y --->Y and jumper to W
G --->G
R --->RC and jumper to RH

Right now has question to rewire to my Honeywell RTH7500 for wire O and Y.

wire RTH7500
O ---> (O/B of heat pump, and W in conventional are the same)
Y ---> (Y)
G --->G
R --->RC and manufacture jumper to R

Do I just simply connect O to O/B(W) and Y to Y(without jumper to W as current thermostate? I do appreciate your help.

 


Replies:

Houston204



98.196.66.53

"Re(1):Honeywell RTH7500 Wire Problem" , posted Sat 26 Jan 20:37user profileedit/delete messagepost reply


http://www.braeburnonline.com/pdfs/3000_sell.pdf




Old = New
O = O/B
Y = Y
G = G
R = Rc & R

Do not jumper W to Y.

option 170 = 2
option 190 = 0

"Tip of the Day" Remember to remove power first.

 

 

shencl

130.13.96.103

"Re(2):Honeywell RTH7500 Wire Problem" , posted Sun 27 Jan 00:14user profileedit/delete messagepost reply


Thanks. Houston204. I will give a try early tomorrow morning. Do you have any idea what system do I have? heat pump?

Originally, I had Hunter 44550 thermostate and when my heater stops working, the contractor called by my home warranty came in to replace many things, including the themostate and do the rewire. I have no clue why he jumper Y to W and don't like the non-programmable thermostate Braeburn 3000. Bought RTH7500 but then get confused where to start.

 

 

Houston204



98.196.66.53

"Re(3):Honeywell RTH7500 Wire Problem" , posted Sun 27 Jan 00:43:user profileedit/delete messagepost reply


It is wired for single stage heat pump. No backup or emergency heat. Be sure to configure option 170 and option 190.


"Tip of the Day" Remember to remove power first.

[this message was edited by Houston204 on Sun 27 Jan 01:45]