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A111

A111 - Shutoff Valve Test Open Error

Rheem · Water Heaters

What does A111 mean?

During the monthly test of the automatic shutoff valve (on premium models), the valve did not open within the allotted time. The water heater has been disabled.

Common Causes

  • Automatic shutoff valve malfunction
  • Control system issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Manually open the valve.

  2. 2

    Contact technical support or a service provider.

Browse all codes in this manual (70)
Verified technical data. Last updated: April 2026

Related Faults

1111 - Gas shut-off valve is not fully open1212 - Gas service interrupted or LP gas low13Hot and cold water lines reversed
Source: Rheem Water Heaters
Open Manual (Page 46)Search more codes in this manual