Honeywell RTH2300B is showing the wrong temp


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Old 05-29-13, 01:22 PM
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Honeywell RTH2300B is showing the wrong temp

Hello,
I got this termostat working thanks to Houston204. Here is the new problem, the temperature that the stat is showing is hotter than it actually is. Which causes the A/C to run until I turn it off. It was just showing 89 degrees when it's more like 70 in here.

It does feel a little warm to the touch. Any ideas what I might do or what I've done wrong? The new stat came with a little piece of wire jumping R and RC, and then I added another between Y and W/AUX.
 
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Old 05-30-13, 10:07 PM
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You want power on the R terminals.
Since you only have 2 wires coming from the air handler, you might swap them.
 
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Old 05-31-13, 08:39 AM
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I have white (power) wire going into the R and a jumper from R to RC. The black wire is going into W/Aux and then that is jumped to Y.

Could it have anything to do with voltage? The HVAC person that came in said that I needed a 24v stat, and when I hooked that up, it didn't do anything.


Here's an image of the wiring:
 

Last edited by yakuza; 05-31-13 at 09:41 AM. Reason: trying to inline the image
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Old 06-01-13, 04:52 PM
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Those look like high voltage wires. Are you sure he didn't say that you need a high voltage stat?

Do you have a meter?
 
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Old 06-02-13, 05:08 AM
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I agree those look like high voltage wires!
 
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Old 06-03-13, 12:38 PM
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He did say I needed a 120 v

The guy did say that I needed a 120v stat. I don't have a meter, but I think I should probably get one.

I did try one 120v from Home Depot, but it didn't seem to work. I don't remember which one it was. I'll try another one though.
 
 

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