10 year old inverter charger system for my sailboat. Multi-Plus 2KW inverter/charger with a Blue Power Panel which manages two 4D AGM batteries. Boat laid up for winter in heated storage and all power loads off. Visited the boat to do maintenance, turned power on and Blue Power Panel on, and it entered bulk charging mode but shortly thereafter I received EEPROM error! and it switched to absorption charge.
Power cycled the BPP which did nothing. Heading back to boat yard today and will power cycle the Multi-Plus. Any other guidance? I haven’t touched the firmware since I purchased the system and it has worked flawlessly until now.
Thanks!