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Posted to HVAC Forum on 6/11/2019 1 Reply

Every 1234Yf system I have seen so far has leak dye pre-installed with UV dye.

And I know that FCA installs UV pellets in every replacement 1234YF and R134 OEM Condensor and Evaporator, so the dye does not have to be added for any warranty or diag adjustment... Login to read more.

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