Rheem · Furnace / HVAC
2 blinks Pressure switch open
What this code means
The pressure switch isn't closing when the inducer motor runs.
Most likely causes
- Blocked vent termination
- Weak inducer motor
- Condensate line blockage
What to try first
Check the outside vent cap and condensate drain for blockage.
Safety note: if this code returns after one clean reset, stop resetting it — repeated lockouts usually mean a real fault that needs a licensed technician. Never bypass a safety switch.
FAQ
What does Rheem error code 2 blinks mean?
Pressure switch open. The pressure switch isn't closing when the inducer motor runs.
Can I fix Rheem code 2 blinks myself?
Usually not. Check the outside vent cap and condensate drain for blockage. If the code returns after one reset, it needs a licensed technician.
What causes Rheem code 2 blinks?
The most common causes are: blocked vent termination; weak inducer motor; condensate line blockage.
Other Rheem furnace codes
All Rheem furnace error codes →
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This information may contain errors or not apply to your exact model — always double-check it against your appliance's own manual before acting. If there's any chance of a gas, fire, electrical, carbon monoxide, or other safety hazard, stop and call a licensed professional or the appropriate agency (e.g. your gas utility) instead of relying on this page alone.