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When the dash board switch is turned to AC the compressor does not engage. It acts like it is not getting power
2 Replies
True - the air conditioning compressor will not turn on when it gets no power - as with when a cycle switch has failed or a wiring connector at that switch, or perhaps a compressor coil is weak. However, it will also not engage when the system pressure is too low, as evidenced by low refrigerant level, which is caused by a leak. Have the refrigerant charge checked first - you will likely find it is low and start seeking out leaks.
If there is not enough freon in the AC system then the compressor will not engage.