Heater intermittently locks out with E11; may run normally at times

Safety: Gas work must comply with local codes. If you smell gas, shut off supply and ventilate the area immediately.

• Verify gas valves: Ensure all manual gas shutoff valves between the meter/propane tank and the heater are fully open.
• Check for other loads: If multiple gas appliances run simultaneously (e.g., spa heater, grill), the line may be undersized. Have a licensed gas fitter verify line sizing and pressure.
• Inspect gas valve wiring: Confirm that the gas valve coil connectors are tight and not heat-damaged.
• Measure manifold pressure: A qualified technician should measure inlet and outlet gas pressure while the heater is firing and compare to Sta-Rite specifications.
• Replace gas valve if defective: If voltage is present at the valve but pressure does not rise appropriately, replace the Sta-Rite gas valve assembly.