BillyC Posted August 10, 2005 Share Posted August 10, 2005 I just searched on "fans" and read all the posts. There is some excellent information on check out of the condenser fans, but I did not see the pressure at which the high pressure switch turns the fans on. When refilling my AC system with R12, we discovered that my 91LS400 high side compressor pressure is reaching 300 - 325 psi before the fans turn on, after which the pressure immediately drops to 250 psi where it should be. I am concerned that these extremely high pressures may blow out a seal or rupture something and would like the fans to turn on sooner. What is the psi at which the high pressure switch is supposed to turn on the fans? Thanks in advance, BillyC Quote Link to comment Share on other sites More sharing options...
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