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Problem: Control valve does not regenerate automatically when UP and
DOWN buttons are held and depressed
Possible Cause
AC adapter unplugged
No electric power at outlet
Broken drive gear or drive cap
assembly
Defective PC board
Problem: Control valve does not regenerate automatically but does
when UP and DOWN buttons are depressed and held
Possible Cause
Defective PC board
Set-up error
Solution
Connect AC adapter
Repair outlet or use working outlet
Replace drive gear assembly
Replace PC board
Solution
Replace PC board
Check control valve set-up procedure
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