Hi @RudShep, I have the exact same issue, can you please re-share the images of the work down as only two are showing or send me the images to
[email protected]. We have a house in Uvongo KZn and the Growatt inverter we have has the exact same issue. It progressed now to a error 53 and then the battery did not charge at all and then progressed back to the error 2. The unit is installed in our garage
What can be applied to the boards to stop this a spray of soem type that stops the rust or abrasion and protects the boards against humidity