TROUBLESHOOTING GUIDELINES
Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician.
Read the GENERAL SAFETY INFORMATION section first.
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LED STATUS | PROBLEM |
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| 1 | Ensure the wall outlet (power supply) is properly |
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| Inadequate or no earth ground. |
| grounded. |
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| 2 | Ensure all ground connections/wires on the water | |
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| heater are securely connected. |
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| 1 | Ensure that the water heater is securely connected to |
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| earth ground. |
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| High resistance to earth ground or | 2 | Ensure that the wall outlet/power supply is properly |
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| reversed polarity in the 120 VAC | ||
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| wired. Also, ensure that internal 120 VAC wiring | |
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| power supply. |
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| connections and the wiring harness have no reversed | |
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| wires. 120 VAC “hot” wire must connect to the on/off |
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| switch. |
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| Pressure switch circuit remaining |
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| closed for more than 5 seconds | 1 | Ensure air pressure switch circuit wiring is correct and |
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| after heating cycle begins. |
| the air pressure switch is not jumpered. |
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| Blower may not start in this | 2 | Replace the air pressure switch. |
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| condition. |
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| 1 | Ensure the air pressure switch sensing tube is properly |
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| connected at both ends and is not kinked or damaged. |
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| Pressure switch circuit remains | 2 | Ensure the correct size of vent and intake air pipe (direct |
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| vent products) was used per the installation instructions | |
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| open longer than 5 seconds after |
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| that came with the water heater. | |
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| the blower is energized. |
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| Blower may run continuously in | 3 | Ensure maximum number of elbows or maximum |
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| equivalent feet of vent or intake air pipe have not been | |
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| this condition. |
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| exceeded per the installation instructions that came | |
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| with the water heater. |
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| 4 | Ensure there are no obstructions in the vent or intake air pipe. |
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| 1 | Check wiring to the hot surface igniter assembly - |
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| replace igniter assembly if wiring is damaged or worn. |
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| 2 | Check resistance of the igniter at igniter assembly |
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| plug - should be between 11 and 18 ohms at room |
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| temperature (77° F at plug end) - replace igniter if open |
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| Open igniter circuit. |
| or shorted. |
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| 3 | Check igniter assembly plug and the socket on the gas | |
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| control valve/thermostat for good connection. Replace |
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| igniter assembly if the plug is worn or damaged. |
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| 5 | Replace the gas control valve/thermostat if the igniter |
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| assembly socket on the bottom of the control is worn or |
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| damaged. |
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| 1 | Ensure flame sensor is making good contact with the |
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| burner flame and ensure flame is steady. Also ensure |
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| supply and manifold gas pressures are within the |
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| Ignition/flame failure. |
| requirements in the installation manual. |
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| The gas control valve/thermostat | 2 | Gas supply is turned off - pressure is too low. For |
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| low gas pressure, consult with your gas utility. | ||
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| has reached the maximum number | 3 | Ensure the flame sensor is clean - use fine steel wool |
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| of retries (3) for ignition and is | ||
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| to clean the flame sensor. | |
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| currently locked out for one hour. |
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| 4 | Check igniter assembly plug and the socket on the | |
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| Cycle the power to the water heater |
| bottom of the gas control valve/thermostat for good |
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| off and on to reset. |
| connection. Replace igniter assembly if the plug is worn |
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| or damaged. Replace the gas control valve/thermostat if | |
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| socket is worn or damaged. |
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| 5 | Replace igniter assembly. |
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