Runxin F67Q1 - The Function and Connection of PC Board

MODEL：F67Q/F71Q/F68Q/F69Q/F116Q/F117Q
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Remark:
F68Q, F69Q working process: Service → Backwash → Brine & Slow Rinse
(Up-flow Regeneration ) → Brine Refill → Fast Rinse → Service.
F117Q, F116Q working process: Service → Backwash → Brine & Slow
Rinse (Down-flow Regeneration ) → Fast Rinse → Brine Refill → Service.
3.2. The Function and Connection of PC Board
Opening the front cover of control valve, you will see the main control board
and connection parts as below: