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word2yamutha 05-02-2013 12:46 PM

Air conditioner not working
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I swear I try to finish a project and another problem occurs.

I went ahead and uploaded my thermostat install I did myself. I want to make sure its installed correctly. The heat and central fan work with no problem, but when I test the A/C unit I get nothing.

When I test the A/C it doesn't make any buzzing sound or anything. Its only 6 years old. My guess is either I have a bad breaker at the fuse box location or maybe there is a bad fuse located in the A/C unit?

I didn't test the A/C when I installed the thermostat (dumb of me) so I guess it could be a faulty thermostat maybe?

Just hope there is an easy/cheap solution to this because my finance wants to call someone.

Its a ecobee smart si with 1 stage cooling and 1 stage heating.

beenthere 05-02-2013 08:01 PM

Run a jumper from the RH terminal to the Y terminal. if the A/C comes on. Then it could be the thermostat.

word2yamutha 05-02-2013 09:59 PM

how do I set a jumper there?

beenthere 05-02-2013 10:05 PM

Just use a piece of wire. Strip both ends and then touch them to those terminals.

Doc Holliday 05-02-2013 10:07 PM

why do you have two wires in the C terminal in the stat? was that like that prior to your new stat install? I have a fleeting suspicion the condenser is not being told to come on due to the common wire from the furnace to the condenser being hooked up in the stat...??

word2yamutha 05-03-2013 12:33 AM

No the other thermostat didn't have this kind of hook up. Here is the former thread regarding the thermostat installation

As you see in the ecobee si installation it says there is suppose to be 2 wires in the common terminal.

beenthere 05-03-2013 04:26 AM

Don't see where it says there is suppose to be 2 wires in the common. Most set ups have the wires for the condenser at the furnace or air handler, not ran to the thermostat.

If you look at the wiring diagrams, it also does show that.

No harm in it though.

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