Water Heater Pressure Switch Problem

One of those is your shut off valve.

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. Now there s only a couple things that will prevent the water from flowing through your water heater and reducing that water pressure. All of the information for this pressure switch replacement video is applicable to the following brands. Pressure switch not turning off.

Try running some water elsewhere in the building to reduce pressure below the cut in level. 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. 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.

This video provides step by step repair instructions for replacing the pressure switch on an ao smith gas water heater. Over time the bearings on the inducer motor wear out. As the air flows through the draft inducer assembly it closes a vacuum switch to signal that proper air flow is present. If the shut off valve leading to the water heater is partially closed water pressure from the unit drops.

Switch won t turn on. Verify that your pump is creating enough pressure to signal the pressure switch to turn off. The draft inducer fan motor draws air into the burner and then exhausts it out the flue. Because most people will deal with pressure switches in their air conditioner systems a common problem that comes from a bad pressure switch is when your air conditioner is frequently cutting off tries to start again or doesn t work at all.

Too small water distribution lines and too many sharp bends between the hot water heater. The most common reasons for replacing the pressure switch are when the water heater won t light or won t heat.