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ryandeen 04-16-2013 07:51 AM

Hvac question
 
I have a trane unit model - TTA060C400A0.
And its a straight cool not heat pump.
When in cool mode, the outside unit put out heat from all sides around the unit but not from the top. Why? Please help me on this.

yuri 04-16-2013 08:45 AM

it should not do that as the fan is now running backwards. very good chance the capacitor is faulty. rare but when it fails the fan can do that. either that or someone wired it up wrong. if it worked OK B4 then it may be the cap.

ryandeen 04-16-2013 08:48 AM

Thank you Yuri, I well check the cap or just change it out

ryandeen 04-16-2013 11:53 AM

I check the cap for the fan and its rated for 7.5 mfd. when check with my meter it read 6.9.
And last spring we change out the fan blade, if that is installed upside down, would that cause that to happen also.

beenthere 04-16-2013 03:22 PM

Quote:

Originally Posted by ryandeen (Post 1160469)
And last spring we change out the fan blade, if that is installed upside down, would that cause that to happen also.

Yes it could. Are you sure its even the right fan blade.

ryandeen 04-16-2013 07:58 PM

Lol, yea it the exact fan blade from graingers..
Some one told me try switching the wires around on the capacitor. The cap did not have C or F on it. So I couldn't tell.
By the way this is for a hotel up town Charlotte that I work for.

beenthere 04-17-2013 03:40 AM

A weak cap can cause a fan motor to run backwards.

old_squid 04-17-2013 09:48 AM

Can you see the hub where the screw is to tighten down the fan onto the motor shaft when looking at the unit from the top?

You shouldn't be able to.

hvactech126 04-17-2013 05:09 PM

Quote:

Originally Posted by ryandeen (Post 1160783)
Lol, yea it the exact fan blade from graingers..
Some one told me try switching the wires around on the capacitor. The cap did not have C or F on it. So I couldn't tell.
By the way this is for a hotel up town Charlotte that I work for.

Grainger doesnt carry Trane parts.........:censored:

HVAC1000 04-17-2013 06:25 PM

Quote:

Originally Posted by hvactech126
Grainger doesnt carry Trane parts.........:censored:

True but Trane doesn't make their own fan blades. Trane uses GE fan blade. Grainger sell GE fan blades. If its the same manufacture number it's the same blade

ryandeen 04-18-2013 08:43 AM

It's looks exactly like the same blade, the hotel only have an account with granger . And I check , I cannot see the lock nut from top. But the AC still works great. Just taking the heat out the wrong way. I will try switching that fan Blade around when I get a chance. Thanks guy.

ryandeen 04-23-2013 06:54 PM

Ok guys I found the problem . I first switch the fan blade around and same thing happen then I switch the wires on the capacitor around brown and purple and then the fan blade start rotate in the other direction . All heat comes out of top now and non on the sides.
But thank you guys for trying to help me figure this out.


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