Water Heater Pressure Switch Problem

If the pump is not creating enough pressure to signal the switch to turn off it is possible the pump could need to be replaced.

Water heater pressure switch problem. One of those is your shut off valve. Too small water distribution lines and too many sharp bends between the hot water heater. Over time the bearings on the inducer motor wear out. You can also try gently tapping on the pressure gauge the switch and the tank.

The regulator will have a screw or bolt and a locking nut system. If the shut off valve leading to the water heater is partially closed water pressure from the unit drops. As the air flows through the draft inducer assembly it closes a vacuum switch to signal that proper air flow is present. This video provides step by step repair instructions for replacing the pressure switch on an ao smith gas water heater.

The draft inducer fan motor draws air into the burner and then exhausts it out the flue. Try running some water elsewhere in the building to reduce pressure below the cut in level. Verify that your pump is creating enough pressure to signal the pressure switch to turn off. Pressure switch not turning off.

Now there s only a couple things that will prevent the water from flowing through your water heater and reducing that water pressure. The most common reasons for replacing the pressure switch are when the water heater won t light or won t heat. Loosen the locking nut and using quarter turn increments turn the screw counter clockwise to the left to decrease water pressure and clockwise to the right to increase water pressure. If the inducer motor is not working properly the water heater will not heat.

If your switch won t turn on this could be a sign your tank pressure is above your switch s cut in pressure. Switch won t turn on.