Water Heater Blower Pressure Switch

Test the voltage reading on the pressure switch with a multimeter.
Water heater blower pressure switch. If everything is ok the switch must close and remain closed during. Testing an air pressure switch on ao smith water heaters. A pressure switch is designed to sense the negative pressure created by the draft inducer motor during the furnace startup and to shut down the furnace ignition if the air pressure is inadequate. Fs6001a 1655 021517 0222 g 50 4234 mount.
Jakel incorporated water heater exhaust blower model 117524 00 class b 05 04m 40 deg. Defective pressure sensor switch most common the purpose of the pressure switch is to ensure that water is flowing through the unit before it allows the heater to turn on. This water pressure switch is designed to use with pentair minimax nt std heater with 6800 controller powermax and minimax plus heater models 150 200 250 300 350 400 and also compatible with pentair minimax. The pressure switch on a furnace may fail or get stuck in an open position and there are few simple checks you can complete before testing the switch.
Also fits pentair powermax commercial heaters and minimax commercial heater with csd 1 controls and minimax commercial low nox pool. Celsius thermally protected insulation system motor. Disconnect the wires to the switch and perform the test while a blower is running. 12b max amb 40 deg.
Now you should perform the test when the unit is on the electric blower is running and the air pressure is applied to the switch. 60hz 1 43a 3000 rpm thermally protected class b ins. The pool pump must be on and your filter clean for the switch to close and allow voltage to pass through.