30 amp ac fuse keeps blowing in my 2010 mercury mariner

Asked by Jun 10, 2017 at 12:56 PM about the 2010 Mercury Mariner Premier

Question type: Maintenance & Repair

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

1 Answer

118,615

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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