Blowing fuse about every three days in the heat of the day

[Lucky8]

I am working on a heat pump with a scroll and it is blowing the main fuse. I
replaced the cfm, bfm, comp cap, and contactor that were all in very bad shape. the compressor running amps are good. Lock rotor amps are good when I am there. What am I missing is the compressor getting stuck internally on occasion?

[DPeoples]

Maybe the fuse/breaker is unable to hold the amps when other loads are running while the a.c is on...too many loads on one path...?

[Lucky8]

That is a good thought, The amps check out its pulling 35 amps at the disconnect and blowing one of them. I put a 45 amp in to see and three days later it blew.

[ACFIXR]

Check your wire size, junction boxes, breaker clamps, and voltage when unit is running. Also sometimes breakers need a break too.No just kidding? Breakers do go bad.

[Lucky8]

Is it possible after checking all the above that the compressor could have a problem

[Lucky8]

I realize its not an everyday thing

[DPeoples]

well if you put a new cap...it shouldnt be the compressor...like acfixer said check your wire size...ect...

[steve3871m]

Is there a TD in the stat or the ODU? If not, might be trying to restart to soon b4 equalizing.

[steve3871m]

Use your infrared to check for loose/failing connections at fuse holder and line connections.

[beachtech]

call a professional :)

[h2045]

Use your infrared to check for loose/failing connections at fuse holder and line connections




I`m with Steve, there is an overheating connection someplace

[beenthere]

I agree with Beachtech, call a service tech.

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Thread closed.