The pevious owner converted our 72 to 134 and removed the POA and installed the aftermarket version of a POA unit with cycling switch. I would like to convert this back to a factory POA, which I have have. Is there anything else that may have been changed when a conversioin like that has been done that I need to check or find/install? I plan to keep the system on 134.
Thanks, Mike

Some good POA info at: http://www.autoacforum.com/messageview.cfm?catid=2&threadid=14776. If you search this web-site, you'll find more. Hope this helps.

Wow that was a lot of info. Thank you very much. It looks like I some testing to do. Mike

I sent my POA valve to Classic Auto Air to be recalibrated for R134.