Google tankless water heater error code 11来的。
11
Installation/Gas supply:
Ignition Failure
1. Ensure you have gas to the appliance and valves are turned ‘ON’
2. Ensure gas type, gas pressure, and gas volume are correct
3. Bleed all air from gas lines
4. Ensure gas line, meter, and regulator are sized properly
5. Ensure appliance is properly grounded
If installation/gas supply requirements are met:
1. Check Gas Control valve for open or short circuits
2. Ensure Igniter Rod is operational
3. Check igniter/Flame Rod(s) and Igniter/Flame Rod(s) wiring harness for damage
4. Check Control Board
5. Check Flame Rod Status