Pro star ps30m question

Your Prostar PS30m is a high quality pulse width modulated solar controller from one of the better manufacturers, so that part of your solar equation is good.

Other things that may affect solar performance are cabling (length and size) between the controller and the battery - the shorter and fatter the better, within reason. The same principle applies to cable size and length between your panels and the regulator. Also your solar panels. Dust from travel, debris falling from trees, or poor orientation to the sun will greatly affect efficiency.

Battery volts of 13 to 14 indicate a well charged battery, or one that is receiving charge or float from another device. If something else is keeping the battery voltage up, such as charging input from the car of from the mains, then the solar controller may decide to contribute little or nothing because it thinks the battery is fully charged.

To test your solar, disconnect your car and mains. Run the van batteries down a bit with some loads overnight, then check your solar. To get a realistic idea of performance you will need a sunny day, but even on a cloudy day you should get a couple of amps.

Depending on angle of the sun, atmospheric conditions, the panel conditions mentioned above, yada, yada, you should get about 12 to 15 amps going into partially discharged batteries.

Relax. I have the same controller. The batteries will only accept what they need so if they are fully charged the solar input will show as zip. I found mine may show no input till say I turn on the fridge. After a while because the fridge has taken power out of the batteries you'll get a value showing as input.

Hi Odog
I have the prostar 30 amp regulator in my caravan , which I found great.
You can download the manual from Morningstar in PDF fomat, which I found useful.
Hope this helps
Cheers
Grant