I believe this is why the compressor won"t kick in?
Your bigger problem is the compressor not kicking in. The cooling fan is not coming on because there is not enough high side pressure to turn the fan on.
I would start by checking power to the compressor, fuses and relays would be inspect. Check to make sure there is the proper charge of refridegerant in the system.
I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa
SOURCE: air condition compressor won;t kick in
Most likely a loss of refrigerant ( freon ) in the system. The A/C compressor uses a low pressure switch as a SAFETY to insure it wont turn on without freon in the system. Hope this helps.
SOURCE: Ac compressor won't kick on
Just had the same issue and posted. Just found the solution is the control module in the dash. Went to the junk yard since new is expensive on these units. Plugged new unit in, was able to charge a/c now blows cold as ice.
SOURCE: Compressor kicks in-out
low on feron in system, give it a can of feron and should fix it, hope to help you,
Testimonial: "Yes-fixed.Thanks!"
SOURCE: 1999 Chev Suburban 1500 with front and rear ac -
the truck has two evaporator cores one for the front unit one for the rear unit also two expansion valves, one for the front one for the rear.
check the large a/c line going to the rear unit if the line is warm with the A/C compresser running replace the rear expansion valve.
if the line is cold then replace the rear units blend actuator motor. if the frount unit is cold then most likely the blend actuator is the problem, remove the cover from the rear unit and you will see the actuator mounted on the side of the air handler box.
the best way to indentifie the unit is to buy one so you know what your looking for.
let me know if there is any thing else you need.
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