Planning the next
AO Silver Member
Join Date: May 2007
Location: United Kingdom
Yes there are two switches.
One is on the pipe out of the condenser ( the 'radiator' in front of the real radiator ). The other is on or near the filter/drier ( below the windscreen washer bottle ).
The one near the condensor will differ between early and late phase 1 ( the switch was at VIN 6023907 ) described in the workshop manual as either a 3 level pressure switch ( early phase 1 ) or 4 level pressure switch ( after VIN 6023907 ). It's job is to engage the radiator fans and disengage the compressor under extremes of pressure.
The switch near the filter/drier stops the compressor in the event of very low pressure ( too much cold in the accumulator part of the drier/filter or a leak ).
Last edited by pkr; 06-07-11 at 10:25.