Multiecuscan

Hello!
I was wondering if anyone knows the value in milibar(mBar) of the air con circuit in a 159 1.9 16v?
I plugged it the pc with the FES and gave me arround 4500mBar...then i started the engine and it gave me from 10440mBar up to 16810mBar...as the fan was kicking in and out..i will post some pictures
Also anyone knows the exact amount of gas needed to refill de circuit?460g or 550g?
anyone can help me please?

The reading looks perfectly normal. It is exactly the same in my 159.
I'm not an AC specialist, but as far as I know - if the pressure goes low (below ~8-10bar) then you have to refill with gas. The fan kicks-in at ~16bar and if the pressure doesn't drop after that then you have to clean the radiators.

The readings are no doubt cool and as it should be you know in just accurate position and yes if the ps levels decrease from 7 & 10 Then there might be the need for refilling the gas in the compressor .

Hello,

I am trying to diagnose a problem with my A/C unit on an Alfa 159 1.75 TBI. I want to check my A/C compressor pressure, but I cannot find it.
Is my assumption correct that the screens posted here are from the main Engine ECU ?
Could it be that I don't have a pressure sensor ? I see only AC Request status and AC status (or something like this) in the Engine ECU.

Thanks !