Renogy, Growatt, Lifepower4, and MQTT Solar setup
We then have 2 100W 12v Renogy solar panels connected in series (Open Circuit Voltage is 22.79v) (Optimum Operating Voltage is 19.97V) hooked up to a MQTT MC2420N10 charge controller.
Both the Growatt and MQTT Charge controllers are connected to a LifePower4 24V Battery bank (200ah).
The GroWatt is connected to the Battery’s BSM Port and is set to lithium ion.
The MQTT Solar Charge Controller is set to lithium Ion as well.
After taking the Airstream out of storage, they array indicator light on the MQTT MC2420N10 won’t turn on if the battery is on or connected, and isn’t showing any voltage, power, or amperage from the pv array on the RM6 display until the battery is off or disconnected (It does however show the battery voltage).
If the battery is off or disconnected, point the pv array indicator is red, but it shows volage, power, and amperage from the solar array.
We’re looking for ideas on a replacement charge controller for the MC2420N10 as it most likely went bad.
it was mentioned that we should look at getting a 24V 200A Bus Bar for the 2 controllers and the battery as well. (Would that be necessary?)
Could we plug the 2 different wattage panels that are in series into the Growatt in parallel via a MC4 Branch Connector, or do we need the 2nd solar charge controller?
Thank you.
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