CFDI fuse open

[ed2kayak]

Sunny Boy SB6000us showing CFDI fuse open error code. Started yesterday. Call in to installer. System is 1 year old. Is this just a blow fuse?

[So solar]

Most likely. Or it ground faulted and needs reset.

[So solar]

Sunny Boy SB6000us showing CFDI fuse open error code. Started yesterday. Call in to installer. System is 1 year old. Is this just a blow fuse?

Its GFDI..not CFDi. And unless you are getting amps to ground. It should be Ok. But to be safe. Have the installer check it. Generally you'll only blow the fuse if over 1 amp.

[ed2kayak]

Yes, to report back it was a GFDI fuse, replaced by installer. Blew again Feb. 14, replaced by installer again. Installer calls me around the end of March, tell me power surge is probably blowing fuses. Has his electrician come by an install a Eaton 2400J complete home surge trap. That should address the problem. So today noticing zero production on the sunnyboy website, I go to basement and its blow again.
So I've blow three fuses in the last 4 months? No other changes were made to my electrical system.

[So solar]

I don't see how a power surge blows a ground fault fuse. Sounds like he's blowing smoke. It's probably in the installation, but doesn't know where.
.

[ocoee]

You have a ground fault! Use a Megger to locate this. All residential systems I install will have animal deterrent/ squirrel proofing around them for this reason. Assuming the system was working well for some period of time, this is a common problem.

[ed2kayak]

You have a ground fault! All residential systems I install will have animal deterrent/ squirrel proofing around them for this reason.

You are very correct. Four workers spent 5 hours today, removing panels and fixing chew wires. It was indeed a squirrel nest. What a PIA. The squirrels were going up the inside of downspouts. So I spent the day putting the expandable mesh basket in all downspouts. Both trees that were on the east and west sides of house were removed last year when I noticed squirrels there.
Now Ill' check every couple weeks to see if they stay away.

[ocoee]

glad you fixed it! I normally install "gutter cover" which is a 1 cm square flexible mesh material. comes on 100 foot roles . surround the entire array between the roof and sides of modules. Squirrels can not get under the array. these little guys might find another way back.
good luck

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