Unit shows E11 and will not ignite; often occurs after recent installation or gas work.

Safety: If you smell gas, evacuate the area and contact your gas supplier or emergency services. Do not operate electrical switches.

• Verify gas supply: Confirm other gas appliances work. Check that the manual gas shutoff valve to the Alpha water heater is fully open.
• Check for kinks: Inspect the gas flex connector (if used) for kinks or crushing.
• Inlet screen: Some Alpha gas valves have an inlet filter screen. With gas OFF, remove the inlet fitting and inspect/clean the screen per Alpha instructions.
• Professional pressure test: Gas pressure and valve operation must be checked with a manometer by a licensed technician. Do not attempt to adjust internal gas valve settings yourself.

Because gas valve issues are critical to safety, replacement of the Alpha gas valve assembly must be done by a qualified professional.