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A007

A007 - Exhaust Switch open

Rheem · Water Heaters

What does A007 mean?

The exhaust flue pressure switch was detected open during heating. Check the switch wiring and venting.

Common Causes

  • Exhaust flue pressure switch wiring issue
  • Venting obstruction or issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the switch wiring.

  2. 2

    Inspect the venting for any obstructions or damage.

  3. 3

    If the problem persists, 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 42)Search more codes in this manual