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Hi there,
I'm having some issues with my smartsolar, that doesn't provide enough current through the load output. Everytime a load tries to push/start to operate, the mppt voltage on the app goes up and down like something is wrong.
Any way I can find how to fix this or what could be the reason?
Hi Mike ! How many panels do you have connected on your system, and also what kind of loads are using on the mppt ? (Watts / Amps consummed would be interesting to know).
Also, the size of your cabling to the battery ? Also, from the manual :
Some loads with high inrush current can best be connected directly to the battery. If equipped with a remote on-off input, these loads can be controlled by connecting the load output of the controller to this remote on-off input. A special interface cable may be needed. Alternatively, a BatteryProtect may be used to control the load.
Michel
Thanks for your comment Michel.
Any chance my mppt is broken? And not charging properly?
Anyway to test it?
Cause my issue is that even with the load connected to the battery, the fridge doesn't start, and the battery is good because it starts the ute. Seems that the mppt doesn't get power from the solar to charge the battery.
Thank you
Some PV voltage drop under load is normal.
But how big is the load?
Any difference if you power the load directly from the battery?
I'm using the smart controller with a 110w solar panel to power just a fridge and charge some appliances...the mppt is also connected to the car battery...been using this way for a while, but only the past few days came up with this issue. At the moment basically can't power more than a phone, and the mppt cuts off...tried to connect the fridge straight to the battery, but then the mppt doesn't charge the battery enough and fridge cuts off.
The only different thing I notice now is through the victron app that the voltage goes up and down fast and just doesn't do its job.
Also I'm using a 15amp cable from the battery to the mppt with a 20amp circuit breaker.
Protecting a 15 amp cable, with a 20 amp circuit breaker is bad news.
