Rheem HVAC Error Code 71: How to Fix It

Q: How long do Rheem hot surface igniters typically last?

Rheem hot surface igniters typically last 3-5 years with normal use. Frequent cycling, power surges, or handling during maintenance can shorten their lifespan.

Q: Can I temporarily bypass a bad igniter to get heat?

No, never bypass or attempt to manually light the burners. The igniter is a critical safety component that ensures proper gas ignition timing. Operating without it creates serious fire and carbon monoxide risks.

Q: Why does my igniter keep failing repeatedly?

Repeated igniter failures can indicate electrical issues like voltage fluctuations, a failing gas valve, improper gas pressure, or a cracked heat exchanger causing flame rollout. These require professional diagnosis.

Q: What's the difference between error code 71 and other ignition codes?

Error code 71 specifically indicates igniter electrical problems (open/short circuit). Other codes may indicate gas pressure issues, flame sensor problems, or sequence timing failures.

Abstract

Rheem error code 71 indicates a faulty hot surface igniter (HSI) that is either open or shorted. This critical component heats up to ignite the gas in your furnace, and when it fails, your heating system won't start or will shut down for safety.