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Re: Contaminated refrigerant - new R1234yf Machine
Posted to HVAC Forum on 1/23/2021

Hello Ted,

I can foresee many problems in the future if your 1234yf machine locks you out if the refrigerant sample does not pass the purity test.

The reason is that many 1234yf systems are being topped up or charged up with R134 or whatever swamp mix can ... Login to read more.