I have four LG 350w solar panels connected two at a time to 2 MPPT 150/60 and then into a 5000w inverter. They are charging 4 200ah LiFePo4 batteries. First thing in the morning and up to about 10am all is well. The batteries are reporting 100% are sitting around 13.2v but yet to go into absorption mode. Then something happens. The two panels on the port side are happy taking their full capacity. However on the starboard side about half is being taken. On checking, one panel appears to have been switched off. Is my MPPT faulty?