Water Heater Pressure Switch Problem

High limit switch open due to excessive vent temperature or defective switch.

Water heater pressure switch problem.

It is also possible for the switch to get jammed because the switch itself is faulty. Replace defective pressure switch. If the wiring is correct than you should replace the pressure switch. Step 2 inspect the pressure.

The switch is connected to hoses and the water in these can sometimes cause a little bit of a 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. Air pressure switch not closing due to defective switch. 4 8 out of 5 stars 256.

This video provides step by step repair instructions for replacing the pressure switch on an ao smith gas water heater. If it does not a problem exists at the water heater tank itself or in the lines that distribute. Rv water heater thermal cut off switch kit replace for atwood 93866 work for the electronic water heater models gch6 4e gch6 6e g6a 7e g6a 8e gc6aa 9e gch10a 2e g610 3e gh610 3e xt series. Water leaving the hot water heater should flow at the same pressure as the cold water in your home.

Pressure switch remained open longer than 5 seconds after the combustion blower started up. Fixing no water pressure from a hot water heater will require you to first check your shut off valve. If the lo code still pops up after cleaning the filter refer to the below troubleshooting info. 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. Part of the series. Check the switch for any kind of a mechanical jam.

While you are inspecting the control board also check for faulty wiring. Check to see if the pressure switch wiring is correct and secure.