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overheating

Water heater overheating warning

Rheem · Water Heaters

What does overheating mean?

The water heater has experienced overheating. Turn off the manual gas control valve to prevent further issues.

Common Causes

  • Thermostat malfunction
  • Blocked water flow
  • Internal fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the manual gas shut-off valve.

  2. 2

    Ensure proper water flow is maintained.

  3. 3

    Refer repairs to a qualified service technician.

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 5)Search more codes in this manual