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Your Anova presents signs of thermostat or controler failure.
More details would be helpful.
Is it a new machine?
Was it recently operating satisfactorily?
Was it used for a high temperature cook and a long duration?
If so, water vapour may have affected the electronic controls.
To attempt a fix, disconnect the machine, allow it to cool and dry for at least a day.
Some users with similar problems have found that by placing Anova in a sealed bag with raw rice or silica gel packs will remove the dampness in a few days.
Did your Anova fall into the water?
Then you may be beyond help.