14 Troubleshooting
Error
Possible cause
Troubleshooting
The product doesn't open or doesn't open
fully
Foreign matter in the product
Remove and clean the product
Faulty product
Replace product
The product doesn't close or doesn't
close fully
O-ring of disc faulty
Replace O-ring of disc
Foreign matter in the product
Remove and clean the product
Joint between check valve and piping is
leaking
O-ring of body faulty
Replace O-ring of body
Screws not tightened
Tighten screws
Check valve leaks
Check valve faulty
Check the check valve for potential
damage and replace if necessary
O-ring of disc faulty
Replace O-ring of disc
14 Troubleshooting
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