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T029

T029 - Failed ignition. Retrying.

Rheem · Water Heaters

What does T029 mean?

The unit attempted to ignite but failed. It is currently retrying the ignition sequence.

Common Causes

  • Temporary ignition failure
  • Gas supply issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Wait for the unit to retry ignition.

  2. 2

    Ensure adequate gas supply.

  3. 3

    If retries continue to fail, check for other error codes.

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 44)Search more codes in this manual