Error Code |
Error Description |
Possible Cause |
What to Do |
E0 |
Hot water sensor failure |
Junction port loose, short circuit |
Call for service |
E1 |
Ignition system failure |
The gas valve is not opened or fully opened. Water shut-off valve is not open, Junction port loose. |
Check and open gas fully, Check and open water valve, Call for service. |
E2 |
There is flame when no water is coming in |
Electric circuit problem |
Call for service |
E3 |
Over-heating protection |
Dry combustion, problem of overheating controller |
Call for service |
E5 |
Pressure switch |
Motor problem. Voltage of power supply is too low |
Call for service
|
E6 |
Over-heating |
Gas pressure is too high, water shutoff valve is not fully opened. The temperature is set too low. |
Check shut-off valve and open fully. Increase temperature setting. |
E7 |
Solenoid Valve |
Open Circuit of the valve, short circuit of the valve, none of the above |
Connect the valve, replace the valve, replace the computer board. |
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