Mppt woes

Swap it out for a votronic duo, it also puts a small charge into the starter battery.
Easy to wire up.
Has its own inbuilt fuse on input side.
votronic a.jpg
votronic b.jpg
 
Bottom line here there is a fuse or fuses somewhere.
If the unit is completely dead it’s almost certainly a fuse which has blown.
Most chargers are independently fused.
The fuse can be of different types from the bladed fuse shown on Trevs post which tend to be external, (but can be internal) to a glass fuse on the printed circuit board.
But your vehicles 12v system will be protected with a fuse box, and the charger will definitely be protected from there.
Simply putting probes on the + and the - power terminals at the charger will let you know if the supply is reaching the charger. If there is no reading there, then it’s your vans fuse which has blown, if not it will probably be a fuse within the charger.
Find out the model and look for instructions and spec online, this could give you what you are looking for. It’s odds on there’s a supply issue, and if there is replacing the solar controller won’t solve the issue if the supply problem is from the 12v supply in the van.
 
Ah well, thanks folks for your advice but I now think that it's kernaked, but hopefully our batteries will last our stay
You're probably not far from a Screwfix, they do a cheapie for £10.99. Take some readings and post them, it'll help diagnose the problem. Maybe worth it if it'll keep you on the road?
 
Where are you just now? There might be a forum member nearby who can help (or are you Froggyside again?)
Yup, in the land of the rising frog,,.But we've just driven 70 klicks and fully recharged the batteries and now doing the campsite thing for the next few days
 
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