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Where do i put freon in to fill it up whirlpool 12000btu

Where do i put freon in to fill it up

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  • James Stopp
    James Stopp May 11, 2010

    Central unit or window unit. Window uits do not have a port to add freon.



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I assume you do not have any a/c cert. so you must be looking to add R-134, to a automobile you will see a cover sometimes black sometimes blue (NEVER RED) The refrigerant will go in at the fitting under that cap but you want to be sure to put it in on the low preasure side of the compressor. this should also be done with a gauge set so not to over fill the system. over filling will also cause the compressor to shutdoun as well on over preasure situation.

Good luck

Posted on Jul 31, 2009


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Hi i replace 3 lg compressor 12000btu and i feel i did everything corrently but my compressor burnt ,and turns of the circuit breaker.i have check the voltage which is 240,current 5.6amp and psi 55...

dear sir

i think you did wrong connection with compressor please make sure first your connection is correct then install your compressor unit make vacuum in unit and then try to fill freon also use over load protectors in compressor for security .correct connection are giving you blow :

C : connect here wire which one is coming from main supply/thermostat /overload protectors

R :connect here wire which one is coming from capacitor ( C terminal).

S : connect here wire which one coming from H terminal of capacitor if capaciter/if capacitor is no mark then one wire i mean no require from H OR C terminal .

hope answer the question
thank you
please vote!

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Need to add freon

  • if you are tapping into a sealed system, then you use the larger of the two copper lines coming out of the side of the compressor (this is the low pressure line, the compressor pulls from this side).
  • clean off the copper tubing with some fine sandpaper before installing your tap.
  • it is very easy to over fill a system with freon, so i would recommend pulling down the system to -30 psi and holding for at least 20 minutes. then add a known amount of freon to the system. 
  • let it run for a while, it will take a little time to get the temperatures down.

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