2016 Premium MSpa Service Manual
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3. Deflate spa pool
4. Unscrew the check valve plastic nut
5. Cut off the tie of ozone pipe.
6. Unplug Ozone generator pipe.
7. Take out control box from spa pool.
8. Loosen four screws on the top lid.
9.
Take out the power board case.
10. Loosen four screws on the power board case top lid.
11. Take out the power board from the case.
12. Cut off all of the ties on the power board.
The upper square valve is for inflation
The button round valve is for deflation