Currently having an issue with the charger cutting off 12v power to lights,pump ect . Would it be better to reduce the amperage to 20amp instead of the current 30amp. If I turn off the charger and let the van run entirely off battery,no problems, once I turn the charger back on within a minute it cuts off 12v?? When I turn the charger back off within the minute 12v comes back on without blowing fuses. The only thing I can assume it’s tripping is the 40am relay but why????