Hayward HP50A - Replace Display

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An Error Code: E08 refers to a communication error between the display (user
interface) and the main control board.
Swap display (user interface) with a new display board
(HPX95005-310188). IF the problem goes away, keep
the new display board on. IF the problem persists,
replace the main control board (HPXMCB50).
Replace Display
Step 8A
8. Error Code: E08