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This circuit board has the function of heating & touch button
Hot: short press to drain hot water,long press to start and stop the heating function.
Cold: short press to drain cold water,long press to start strong wash function.
The computer board energized after 2 seconds to enter the operating state,buzzer chiroing and machine automatically wash for 18S.
When below the low-water level,the booster pump started to work,inlet valve opened and entered the purify process
When reach to high water level,the machine shut down.
When the low pressure switch detected the water pressure below the set value,the machine shut down,buzzer chirping for 10 seconds
Continuously purify more than 6 hours,the machine entered the check process,buzzer chirping for 10 seconds.