Multiplus 48/6500 ac load showing low value

Hi all, my house standby mode is around 200w, and console always showed that rough amount. just today it sometimes shows 0w , 10w and sometimes back up to 200 ish w. i have a cerboMK2, meter , solar and 16kw battery. Just now i have plugged in a powerbank which shows 220w charging input and my ac out on console has gone up to around 200w. Any ideas?