Nalek,

I would not bypass any of the high pressure / overheat swtiches on the A/C system. They were put there by Volvo for a good reason: to protect your compressor when the lines are under unusual pressure, and to safeguard proper operation of the system. I had exactly the same problem you mentioned on my 1996 960 in the end of June this summer. I bought a pressure gauge and looked at the pressure in the A/C lines. Sure as heck, it was low on R134a. Started charging it, and it has been running wonderfully. FYI, R134a gauges & refrigerant is readily available at all car parts stores. In mine I used the Interdynamics R134a that contained R134a , 2 ounes of oil, and a Stop-leak all in one container. The car has a slow leak, and needs to be recharged every other year or so since new.

Good luck!

Azeez