Mppt 100/50 was exposed to light rain and is showing error #28
asked
Mppt100/50 got wet
https://www.victronenergy.com/live/mppt-error-codes
Err 28 - Power stage issue
This error will not auto-reset.
Disconnect all wires, and then reconnect all wires. If the error persists the charge controller is probably faulty.
Note that this error was introduced in v1.36. So when doing an update, it might look like the firmware update caused this issue; but it doesn't. The Solar charger was then already not performing 100% before the update; updating to v1.36 or later merely made the issue more visible. The unit needs to be replaced.
