Rheem · Water heater
Status light: 2 flashes Low thermopile voltage / pilot not sensed
What this code means
The gas control valve isn't sensing enough voltage from the thermopile to prove the pilot is lit, so it won't open the main gas valve.
Most likely causes
- Pilot flame too small or not contacting the thermopile properly
- Degraded thermopile
- Loose connection at the gas valve
What to try first
Follow the pilot relight instructions on the tank label. If the pilot lights but won't stay lit, the thermopile usually needs replacing.
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.
Find the part on Amazon →FAQ
What does Rheem error code Status light: 2 flashes mean?
Low thermopile voltage / pilot not sensed. The gas control valve isn't sensing enough voltage from the thermopile to prove the pilot is lit, so it won't open the main gas valve.
Can I fix Rheem code Status light: 2 flashes myself?
Usually not. Follow the pilot relight instructions on the tank label. If the pilot lights but won't stay lit, the thermopile usually needs replacing. If the code returns after one reset, it needs a licensed technician.
What causes Rheem code Status light: 2 flashes?
The most common causes are: pilot flame too small or not contacting the thermopile properly; degraded thermopile; loose connection at the gas valve.
Other Rheem water heater codes
All Rheem water heater 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.