Honeywell RTH7500 not cooling good - http://www.hvacmechanic.com/ Forums


Original message

randyhoff

68.114.146.59

"Honeywell RTH7500 not cooling good" , posted Fri 25 Apr 22:14user profileedit/delete messagepost reply


Before I installed the new t-stat the AC could get really cold if I turned it down low. Now, with the new t-stat the air only seems to get cool and it doesn't feel like the humidity is being removed.
My old t-stat had the wires R, W, Y, and G. I don't think this unit is a heat pump. I have used the conventional wiring described in the installation guide ( R and RC connnected)
R = R
W = W
Y = Y
G = G

I hooked up a second unit (a heat pump) that also is using the RTH7500 and it is working great.

 


Replies:

Houston204



98.196.66.53

"Re(1):Honeywell RTH7500 not cooling good" , posted Fri 25 Apr 22:21user profileedit/delete messagepost reply


Does the outdoor unit start with cooling demand?
If everythings starts as it should,(and your panel is on) I recommend having your unit serviced.

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

 

 

randyhoff

68.114.146.59

"Re(2):Honeywell RTH7500 not cooling good" , posted Fri 25 Apr 23:04user profileedit/delete messagepost reply


No, the AC is not starting at all. I thought it was but the fan was set to "on" instead of "auto". I turned to fan to auto and turned the temp down low and the AC is not starting.

 

 

Houston204



98.196.66.53

"Re(3):Honeywell RTH7500 not cooling good" , posted Fri 25 Apr 23:12user profileedit/delete messagepost reply


Did you remove power to the heater before replacing your stat?

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

 

 

randyhoff

68.114.146.59

"Re(4):Honeywell RTH7500 not cooling good" , posted Fri 25 Apr 23:23user profileedit/delete messagepost reply


Yes, I turned to breaker off for the unit.

 

 

Houston204



98.196.66.53

"Re(5):Honeywell RTH7500 not cooling good" , posted Fri 25 Apr 23:26user profileedit/delete messagepost reply


Does it start when you touch your yellow to the red wire? (R to Y)

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