AC switch ? Hi guys after replacing the compressor ( like for like York / Aspera to ease fitting on existing mounts from eBay £288 ) which seems to fit well all lined up and connected . The only way I can 12 V and thus make it kick in is to jump this as shown . Image Unavailable, Please Login Jumping the pressure switch didn’t really work so I jumped both the pressure switch and this thermostat? It the compressor kick in ( same old clutch transferred across a 12 v supply .) I ran it for while and it cooled nicely the cabin . I had it vac tested and refilled according to the manual with 1.1 Kg of R 123 ? Something after installing the new pump . It runs now with only the thermostat jumped and the pressure switch re connected . With the thermostat thingy ( sorry don’t know the correct term ) connected the comp doesn’t get 12 v with the centre console AC on so doesn’t run . What needs replacing ? And importantly what are the longer term consequences of running it with this jumper in place ? It works btw .
That 'thingy' is also a pressure switch, overpressure, I think. The car has separate over pressure, and under pressure switches. These days you can buy inexpensive high/low pressure switches (so called trinary switches) that look like the smaller pressure switch, except with an extra wire.
Arh , yes I can see it’s connected by its copper capillary tube . I have a original owners manual buts it’s talking R12 and with only that the guys put in 1.1 Kg s of gas . Obviously not R12 as it’s long been discontinued here in the EU as well . They put in the next one R123 ? But not the very latest stuff . Begs the Q how much do I need ? Of the R123 ( the one after R12 ) They could have put too much gas in if the jumper is on the high pressure switch as you say , or this switch is knackered ? Or conversely it’s the low pressure I have jumped ? But I doubt it .
if you open the system to change this , then you must change the dryer so why not buy the new dryer with pressure port and binary switch for under $60 usd from 2 min ebay search like this https://www.ebay.com/itm/310813787066 and https://www.ebay.com/itm/356819463626 jumper acrosss all 4 hi and lo pressure switchws as this is the full replacement
