TMC Optical Auto Top Up Instructions Manual page 10

We do not recommend that you add anything (such as kh, calcium or magnesium
supplements) to the ro chamber in your aquarium set up - other than re-mineralisers.
Precipitation of elements may damage the Optical Auto Top Up system pump.
Problem: Pump not activating with low water levels
• Possible Cause: No power.
Solution: Check connections and ensure Optical Auto Top Up sensor and pump are connected
to the correct DC jacks.
Solution: Ensure Optical Auto Top Up sensor is clean and working. Re-install in correct
position, then turn off and on again. Test components for correct activation. Check pump for
damage or debris.
Problem: Pump constantly on
• Possible cause: Optical Auto Top Up sensor failure and or control unit error.
Solution: Ensure parts are clean and working. Re-install in correct position, then turn off and
on again. Test components for correct activation.
Problem: Pump activating with high water levels
• Possible cause: Optical Auto Top Up sensor error.
Solution: Ensure parts are clean and working. Re-install in correct position, then turn off and
on again. Test components for correct activation.
TROUBLE SHOOTING
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