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Classic (BI) Series Relay Faults | Water Systems | Water Check Valve Closed | Error 15 U 11

Topics:

  • Error code 15 U 11
  • Classic (BI) series shows 15 U 11
  • 15 U 11
  • Water check valve relay closed

Cause:

  • Water check valve relay stuck closed

Troubleshooting:

  1. Turn the home circuit breaker to the unit off for 30 seconds then back on again.
  2. Retest the unit operation.

Answer:

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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