Classic Series Flow Meter Faults | Water Systems | No Flow | Error 50 U 87


  • Water flow meter did not detect flow


  • Error code 50 U 87
  • Classic Series displays 50 U 87
  • 50-U-87
  • Water flow meter fault with water system no flow detected

Steps to Verify Issue:

  1. Confirm the water pressure to the product is good. Recent water pressure drops may have caused the issue. See How to Confirm Water Pressure.
  2. Turn the home circuit breaker to the unit off for 30 seconds then back on again.
  3. Retest the unit operation.


If these steps do not resolve the issue, no further customer troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

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