UPU Ultrapure Water System Troubleshooting Series 4 – Troubleshooting Frequent Pump Start-ups

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Possible Causes of Fault

1. Low pump inlet water pressure ("Inlet Water Source" indicator light flickers on and off)

2. Damaged RO membrane housing check valve ("Full Water Standby" indicator light flickers on and off)

3. High-pressure switch malfunction

Solutions

1. Check and adjust the tap water pressure. If necessary, install a tap water pipeline pump or modify the tap water pipeline.

2. Replace the membrane housing check valve.

3. Replace the high-pressure switch.

When this machine malfunctions, we recommend that you first try the above methods to diagnose and troubleshoot. If the problem persists, please call our service hotline 400-884-6567 immediately for assistance from UPU Ultrapure Water engineers.

References

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