Quote:
Originally Posted by tangofox007
The pressure switch is located on the "high side" and cannot possibly be affected by "low side" pressure.
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Our guy specifically stated he was diagnosing the pressure switch on the low side.
For AC in general, some use both. The low side sw cycles the compressor when max cooling isn't needed or if the system has a low charge.
The high side switch is to turn on aux condenser fans when sitting stationary. Some systems use the high pressure SW as a safety compressor shut off it high side gets too high.