What is the model number of your unit, please?
Ok was the unit flashinf PF at any time?
Have you had a power failure recently when the unit was runing?
The manufacturers tag should be on the inside of the lid/door
Ok these units are sensitive to power surges. What I suggest you do is install a good surge protector and this should remidy tthe problem.
For now I would not be concerned. If after you install the saurge protector it happens again in say the next week then you may be looking at a new control board..
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