Next take off one of the power hoses and blow on it.
Furnace pressure switch lowes.
Find pressure switch plumbing at lowe s today.
First turn the power of the furnace off.
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.
Now use the ohmmeter to check whether the pressure switch is functioning properly.
Single and 3.
Use an ohmmeter to check if the pressure switch is opening or closing properly when heat is called for.
Suitable for jet pumps submersible pumps and reciprocating pumps.