Find pressure switch plumbing at lowe s today.
Furnace pressure switch lowes.
This pressure switch signals the pump to start when the water system drops to 40 psi factory set and stops at 60 psi factory set.
This switch is to be used.
Single and 3.
Now use the ohmmeter to check whether the pressure switch is functioning properly.
Maximum pressure 220 psig.
Next take off one of the power hoses and blow on it.
Use an ohmmeter to check if the pressure switch is opening or closing properly when heat is called for.
First turn the power of the furnace off.