I have a 30 amp controller and a 250w schott solar panel on a camper well the controler goes into an error E2 which is high voltage checked voltage and there was 17.5 volts comeing from the solar panel and 16.1 going to the batteries, disconnect the solar the error goes away and the voltage from batteries is 13.5 volts . reconnect solar panel and the same thing happens. Anybody know what to do? Thanks Dean
Could be a bad connection in your cabling that causes the voltage at the charger to be higher than the voltage on the battery. You care about your battery voltage, not the voltage out of the charger. These can be different. You might consider working this issue through your charger's manufacturer. Maybe others have additional troubleshooting steps and will be able to respond.
I have Provista 3040 MPPT chrage controller connected to a 220W panel & 12V, 125Ah battery.This also produced a repeated E2 error, when the battery was fully charge and no other load was present.
The large capacitor, 1500uF 80V, subsequently exploded.My initial though the Vmax on the solar input (29V) had been exceeeded, as the Voc of the panel could be 34V
The capacitor was replaced & a LDO Pmos Voltage Regulator added in series with the panel to limit Vax to 28VThe unit bench testing using a power supply to replace the solar panel. It appears the controller cannot regulate the battery voltage when the current demand is below 3A.
This regulator has failed AGAIN and now shorts the panel.
I have tried two other regulators in the same setup with no problemsA simple 30A PWM controller bought at showA 25A ebay MPPT controller
Conclusion the Provista 3040 MPPT is not fit for purpose
Thanks so much for that info. My batteries are toast, so I got two more, and sent that other controller back, and they sent me a new one, but I am not going to use it. I am just going to go with a simple pwm controller. Thanks again Dean
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