MPPT solar charge controller repair and modification.

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The MPPT charge controller is an integral component in any solar system, off grid, RV, or cabin in the woods. Internally they have fuses that are soldered to the circuit board. This easy modification brings these fuses outside the housing where they are easy to service.
Fuse holder used
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Опубликовано:

6 сен 2020

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Комментарии : 50

@Scrambler85 3 года назад

A nice heads up

@MyGuyKirby 3 года назад

Yvan, interesting why some have a fuse that requires this much work to replace! A short cut design or just expecting to sell a new unit. Was this in the older bus?

@LacroixCruiser 3 года назад

Yes this was in the GMC, no solar installed in the MCI 102DL3 yet

@stonyfieldmotorsports 2 года назад

I have the 100a tracer model. Are one of the fuses for the display/interfacing and the other for the charging? The display on the charge controller won't come on, the remote display won't connect, and I can't interface using a USB to a pc. But it still charges. Great tutorial by the way!

@LacroixCruiser 2 года назад

Thank you, sorry I cant help.

@scaleop4 3 года назад

i have the same controller ..mine had 2 white 25 amps fuses both of them blown...was not an easy task to unsolder the old fuses and put in the new ones in but i got there in the end lol.

@LacroixCruiser 3 года назад

Good job!

@immrnoidall Год назад

@@LacroixCruiser It's easiest to snip away the plastic of the fuses and solder your new fuses to the remaining legs still soldered onto the board.

@LacroixCruiser Год назад

Good idea

@lisamcdonald7828 3 года назад

How often do the fuses blow? I've been running a 60 amp for over a year and knock on wood I haven't had a problem. I've not heard about people blowing fuses in them in any of the solar groups I belong to.

@LacroixCruiser 3 года назад

It’s only happened once .

@brucefay5126 3 года назад

Once is enough to warrant the modification/upgrade. I will never understand the thought process that is used to decide that an internal fuse is better solution than an externally available fuse holder or, even better, a resetable circuit breaker. The cost savings just isn’t significant.

@johnq8792 3 года назад

Man has 3 hands, alien invasion?

@LacroixCruiser 3 года назад

Lol

@robertpaulis439 Год назад

Mr Lacroix. Is there any hope for my solar charge controller after having mistakenly introduced solar power without the battery. I pulled the back and couldn't find any fuses. That's got me worried. Thanks for any help you can suggest. Bob

@LacroixCruiser Год назад

In that case you may want to contact the manufacturer

@robertpaulis439 Год назад

@@LacroixCruiser Thanks

@LennyVasbinder 3 года назад

Have you had to replace any of the terminal screws that hold the PV or battery wires in place? I have a unit where the Phillips screw heads were stripped and Epever doesn't seem to have a solution. I haven't opened mine up yet.

@LacroixCruiser 3 года назад

Not yet

@lennylivinglife9596 3 года назад

@@LacroixCruiser I'm going to subscribe from my other YT name/channel, Off-Grid And RV Living. I hope you never have to but if you do, I'll be waiting. :D Epever sent a reply saying to use a thick rubber band on the end of the Phillips screwdriver but I'd really like to replace the screw so I can be sure of getting a tight connection. 15-30 amps DC is a lot of juice for a loose connection.

@LacroixCruiser 3 года назад

Agreed, that doesn’t sound like a long term solution.

@annikagibbons4146 Год назад

I have this same problem. Did you ever figure out a solution?

@LennyVasbinder Год назад

@@annikagibbons4146 Not yet. I still need to disconnect it and open it up.

@daveluxton8317 3 года назад

curious if you checked the fuses before removing. i have a similar controller and all the fuses tested good (continuity) but it's totally dead. more detective work ahead.

@LacroixCruiser 3 года назад

Yes fuses were blown in our case.

@joesnow739 3 года назад

I have no power going from my charge controller to the battery - is it possible the internal fuse has blown? I may have plugged the solar panel in before the battery to the CC as I was rushing. Any help would be much appreciated. Thanks.

@LacroixCruiser 3 года назад

Very possible, disconnect it, open it up, and check.

@joesnow739 3 года назад

@@LacroixCruiser Thanks Lacroix. Looks like a broken fuse. Unable to get the fuse out though. Is it possible to use 30amp fuse wire for the job? Surprised they solder them in - any reason for this? Thanks, Joe

@LacroixCruiser 3 года назад

I unsoldered mine and wired in a fuse holder externally.

@randolfefrilleestranero5900 3 года назад

Joe, were you able to fix your controller?

@joesnow739 3 года назад

@@randolfefrilleestranero5900 yes, the internal fuses had blown. Used fuse wire to fix them. Tied it around holes on the existing fuses as it was solder down. Works like a dream now!