What are the codes on my hot water heater?

As the unit is equipped with the Intelli-Vent gas control valve, it will display the error codes 6 where two indicator lights, A and B, will be on. To reset the heater, you must first cycle the power to the unit OFF and ON.

Why is my AO Smith water heater error code 6?

Get FREE Estimates! How to fix the power-vent AO Smith water heater (GPDH 50), with an error code 6, due to the ignition and flame problems? There are several reasons why the AO Smith water heater GPDH 50 has ignition or flame failure problems.

When do I need to replace the gas control valve on my water heater?

The resistance should be between 11.5 and 18.8 ohms and must be replaced if it is not. Keep in mind that the element resistance changes over time. Low pressure – the manifold gas pressure cannot be adjusted, so if it is off by 0.3” W.C., you must replace the gas control valve.

What should the flame look like in a water heater?

Proper gas combustion and the burner flame. The main indicators of the proper gas combustion are the stable blue flame or blue flame with the yellow inner cones (see the picture). It is also OK to see the tip of the flame with a slightly yellow color.

What should I do if my water heater flame is unstable?

Check out the gas valve and if there is a problem do not try to fix it, get a new one. Note: If you find the unstable flame in an old water heater and you are unsuccessful in identifying the problem, it might be worthwhile to get and install a new gas unit, especially if you have other gas appliance on the same line operating without problems.

How often should I Check my gas water heater flame?

Check the main burner, burner flame and pilot light regularly, at least once every six months, followed by dust and debris cleaning of the burner and combustion chamber. An adequate supply of combustion and ventilating air must be available without obstructions.

What causes the Blue Flame on a cast iron water heater?

The manually adjustable air shutter is usually found on the cast iron burners, while the steel burners utilize the self-adjusting air mixture. The leading indicators of the proper gas combustion are the stable blue flame or blue flame with the yellow inner cones (see the picture).