Rheem HVAC Error Code 22: How to Fix It

Q: What does Rheem error code 22 mean?

Rheem error code 22 means the pressure switch failed to close, indicating a problem with venting or the inducer motor. The furnace won't operate until this safety issue is resolved.

Q: Can I reset Rheem error code 22?

You can try resetting by turning off power for 5 minutes, but error code 22 will return unless you fix the underlying pressure switch or venting problem.

Q: Is it safe to run my Rheem furnace with error code 22?

No, never run your furnace with error code 22. This error indicates a safety system failure that could lead to dangerous gas buildup or carbon monoxide issues.

Q: How much does it cost to fix Rheem error code 22?

Costs range from free (cleaning blocked vents) to $150-400 for pressure switch replacement, or $300-800 for inducer motor replacement depending on your model and local labor rates.

Q: Why does my Rheem furnace show error code 22 in winter?

Error code 22 is common in winter due to snow or ice blocking exhaust vents, frozen condensation in vent pipes, or increased system demand causing existing component weaknesses to show up.

Abstract

Rheem error code 22 indicates your pressure switch failed to close, which prevents your furnace from operating safely. This usually means your venting system is blocked or your inducer motor isn't creating enough suction to activate the pressure switch.