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My MPPT 100|50 smart solar has burned the connection and know it is not working properly. Indeed, I am afraid of it starts a fire onboard. As a sailor, you know how danger it is. To avoid it right now, I am using the controller with a charge cap of 10 amps.
As you can see on the photo attached, it stars a small burned with a bad smell.
Can you help me with this? It has l
ess than 2 years and is under the warranty.
Hi, saying hello, and please is a nice way to ask for help. BTW, the issue is related to the battery side, and getting a connector burned so badly means you have no fuse at the + connector of the battery, which is essential in such installations. For any reasons it seems to have been a long overload / short-circuit on the plus connector of your mppt.
I seriously doubt it will be taken under warranty, propably the power cable was not big enough to carry the all the amps, and it burned the connector. Personnally, I will review my full installation, add fuses, change the cables, and repalce the mppt.
Michel
Hmmm, looks more like the result of a loose connection than a short or undersized wire. The MPPT has an internal fuse on the battery side. you need to remove the lid and see if there is any other damage. This would not be warranty - the lid may also be difficult to remove depending on the age of the unit. If you can get the lid off, it should be possible to solder in a new screw terminal.
mind you, if the wire clamp still works, and the unit is functional, I would suggest to carry on using it as is, but do make sure the wires are securely clamped.
I've had this happen myself, hot connection from humidity and bare copper wire. As mentioned you might be able to keep using it if the meta terminal clamp still functions and put some nice new tinned copper wire of suitable size in there. Mine was really badly melted, but I managed to solder on another terminal block. The casing is moulded and a major job to get access to the PCB.
@dingaling Can you advise me how to disassemble my 150/70 mppt? I have to conduct repairs inside due to over voltage (I was testing and let the voltage exceed specs).
Hello. I believe you should return it under warranty, claiming ignorance. It may work.
Aside from that, you'll need to open it, determine which component broke, and replace it, which would void your warranty, so try option 1 first.
krunker
