30 amp ac fuse keeps blowing in my 2010 mercury mariner
The ac started blowing warm so tried to charge
system found ac would not engage found blown
fuse replaced it but it blew 30 seconds later
Most common failure is the A/C Compressor magnetic clutch coil, when they get a little age on them the field coil start to overheat eventually shorting out. To verify unplug the A/C clutch coil and install another fuse and turn it on, if the fuse doesn't blow you found your problem, if it does then you have a short elsewhere in the A/C system.
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