Safety Notice - This is a gas-fired water heater. Only professionals who are qualified to work on such equipment should do so!
If you are in need of a qualified professional in your area, please use this contractor search page ;
An "EA" error code on the display (sometimes mistaken by the user for "ER") means that the water heater tried to ignite the burners three times when water flow was sensed, but the burners did not ignite after the attempts.
The most common causes for the appliance failing to achieve combustion are;
1. A liquid propane model being supplied with natural gas (or vice versa).
2. The gas supply pressure to the water heater being insufficient;
a. NG models require an absolute minimum of 5" water column of gas pressure in high fire to operate correctly (the maximum allowable gas supply pressure is 14" water column).
b. LP models require an absolute minimum of 11" water column of gas pressure in high fire to operate correctly (the maximum allowable gas supply pressure is 14" water column).
3. Undersized gas supply piping. This is a 175,000BTU water heater, and the gas supply installation needs to be sized and installed accordingly.
4. The water heater's gas valve may be out of calibration, and so the air/fuel mixture may not be ideal for combustion. Checking the calibration (and adjusting if needed) should be done when installing the water heater above 4000ft elevation, after carrying out a gas conversion from LP to NG (or vice versa), or after installing a new gas valve.
5. Damaged or dirty spark electrodes.
6. Damaged burner tray or gas valve.
7. Rain coming through the exhaust vent pipe and into the burners, fan motor, and gas valve. If this has happened, we recommend replacing the water heater entirely as it is unsafe to try to reuse the appliance after it has been water-damaged.
8. Insufficient combustion air, potentially caused by;
a. If twin-pipe install, the air intake pipe or termination may be damaged or blocked.
b. If using room-air, the volume of the area may be too small to contain enough oxygen for the water heater (especially problematic if there is an extract fan or another combustion appliance in the area too).
Please refer to these service bulletins for further assistance;
EA Code Bulletin (PDF 1.6 MB)
Check Gas Pressure Bulletin (PDF 0.5 MB)
Measuring CO2 Bulletin (PDF 1.1 MB)
Condensation And Rain Requirements Bulletin (PDF 0.4 MB)
Replacing/Cleaning Electrodes Bulletin (PDF 1.2 MB)
Gas Conversion Bulletin (PDF 1.7 MB)