Rheem · Water Heaters
The inlet gas pressure is outside the allowable range for natural gas or LP gas. This can cause improper operation. A gas pressure regulator may be needed.
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Verify the inlet gas pressure is within the specified range for your gas type (4.0” – 10.5” w.c. for Natural Gas, 8.0” – 13.0” w.c. for LP gas).
If the pressure is out of range, a gas pressure regulator must be installed.
Consult a qualified service technician to install or adjust the gas pressure regulator.