a/c tripping the fuse


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Old 08-03-10, 12:03 PM
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a/c tripping the fuse

We have a 4 year carrier puron unit which wasnt cooling as it should. There was a puron leak which was fixed and it cost over $1000 for this repair. This was completed early July and things were good for a few days then after couple of hot days the a/c tripped the fuse (the furnace fan worked but a/c fan is not working) then we reset the fuse and everything was fine again for 3 weeks or so and now on another hot day the fuse is tripped again....do you know what the problem could be?
 
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Old 08-03-10, 04:36 PM
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Fuse or circuit breaker? (Fuses don't trip and they can't be reset.)

The compressor nameplate should specify the maximum size circuit protection. What is the amp rating of yours?

A bad run capacitor can cause the motor to draw more current. Might replace that.

Low voltage will increase motor amps - and during hot weather, your utility's voltage may be drooping. Measure the voltage, if you know how safely, at the load side of the contactor when it's hot and the compressor is running.
 
 

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