iboost problem?

Now that we have a little sun i have noticed a small issue with my iboost and buddy.
Steady sunshine yesterday and today and noticed that my iboost was sending more to hot water than i was actually producing according to the iboost and my Geo solar display.
Have checked this morning that the Geo display matches the generation meter which means its the iboost which is wrong.
Right now i am generating 1550w and the iboost is saying its sending 1800w to hot water with 100w left over.
There seems to be a 400w over reading by the iboost, had this 7 years and its always been good but seems to send more to hot water than i produce.
Any ideas?


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