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AC quit putting out cold air

mrad
Explorer II
Explorer II
Yesterday my AC seemed to be working fine. Today I turned it on as temp was about 83. Two hours later TT seemed marginally colder inside than outside. Six hours later it seems the same. I crawled on the roof and am seeing no condensation near the unit and am not seeing any inside near vents where I will usually see a few drops. Does it look like the ac may not be working? If so' what could have caused this ???
5 REPLIES 5

Golden_HVAC
Explorer
Explorer
Here is a picture of the popped capacitor and the good one on the right.



Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a

Porsche or Country Coach!



If there's a WILL, I want to be in it!



I havn't been everywhere, but it's on my list.

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Golden_HVAC
Explorer
Explorer
Golden_HVAC wrote:
RoyB wrote:
Here is a neat article from google search with some photos...

HARD START CAPACITOR FOR RV A/C

Roy Ken


If you where to click on the link above, you will see several pictures, including the removal of the 4 screws to open the top of the A/C unit on your roof.

Here is a picture of the two capacitors. The smaller silver one is attached to the indoor fan motor.



The larger silver capacitor is the run capacitor for the compressor.

Good luck,

Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a

Porsche or Country Coach!



If there's a WILL, I want to be in it!



I havn't been everywhere, but it's on my list.

Kangen.com Alkaline water

Escapees.com

Golden_HVAC
Explorer
Explorer
I would shut it off, until it can be looked at.

If it does have a leak or bad capacitor, then running it is very bad for the expensive compressor. I am guessing that while on the roof, you did not feel really warm air leaving the unit - a indication that it was working right.

If you feel up to it, shut off the circuit breaker, and climb on the roof. Remove 4 bolts that hold down the outside cover. They should be large phillips screws.

Once that cover is off, look at the compressor wiring. It should be black compressor, with 3 wires going to it. One wire will go to a 2" diameter silver capacitor (or it could be oval). If this is popped up, then it is bad. If it looks 'normal' (yea like you might know what that looks like?) then it can still be bad, but you would need a capacitor tester to find out. . .

I bought a clamp on amp meter at Lowes Hardware for $40. It has a capacitor checker, and can measure amperage by clamping the ring around any AC wire, and setting it on the 40 amp or 400 amp setting. It even glows red when there is voltage over about 50 volts inside the wire (without touching the wire).

If the capacitor reads 28 mfd while the rating is 30 or 35, then replacing the capacitor will probably fix it.

Good luck,

Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a

Porsche or Country Coach!



If there's a WILL, I want to be in it!



I havn't been everywhere, but it's on my list.

Kangen.com Alkaline water

Escapees.com

Toddupton
Explorer
Explorer
Is the condenser fan on the roof running?

Old-Biscuit
Explorer III
Explorer III
The fan is running BUT the compressor isn't

Could be start capacitor for compressor is bad
Is it time for your medication or mine?


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