Water Heater Pressure Switch Problem

The most common reasons for replacing.

Water heater pressure switch problem. This could be as simple as your filter was dirty which constricted flow to the heater or you would have to troubleshoot the various switches. Fixing no water pressure from a hot water heater will require you to first check your shut off valve. This video provides step by step repair instructions for replacing the pressure switch on an ao smith gas water heater. The switch is connected to hoses and the water in these can sometimes cause a little bit of a problem.

Part of the series. While you are inspecting the control board also check for faulty wiring. If the lo code still pops up after cleaning the filter refer to the below troubleshooting info. Replace defective pressure switch.

It is also possible for the switch to get jammed because the switch itself is faulty. Step 2 inspect the pressure. Check to see if the pressure switch wiring is correct and secure. If it does not a problem exists at the water heater tank itself or in the lines that distribute.

Pressure switch remained open longer than 5 seconds after the combustion blower started up. 4 8 out of 5 stars 256. If the wiring is correct than you should replace the pressure switch. Water leaving the hot water heater should flow at the same pressure as the cold water in your home.

How to fix no water pressure from a hot water heater. Disconnected torn or blocked pressure sensing tubing from air pressure switch to blower housing. Lo water pressure switch vent pressure switch or temperature limit switch fault. High limit switch open due to excessive vent temperature or defective switch.

Check the switch for any kind of a mechanical jam. Air pressure switch not closing due to defective switch.