Fast fix for non working furnace with clogged p trap or closed pressure switch reading duration. To get the pump running again i use an insulated screwdriver to manually pop the contacts open.
How To Repair Bouncing Sparking Contacts On Water Pump
Pressure switch contacts stay closed. The pump then starts and everything works. Usually everything works as expected. The contacts on the switch are like points on an old car and can corrode and fail. Sometimes when the pressure reaches 50 lbs. The comment down the page about rust clogged plumbing is definitely relevant. The contact switch in a pressure control switch ought to close turn on the pump when pressure falls below the cut in pressure setting that will be typically 20 psi or 30 psi on a new control switch.
Frequent cycling of power to the switch and the presence of corrosive substances are two common causes. If the contacts remain open and there is no water pressure the switch is bad. However sometimes the water stops and i find that the pressure switch contacts are closed making contact but the pump is not running. If the switch closes turn the power back on. I replaced the pressure control switchthe pressure gauge and the 4 pipe the control switch sits on. The points open as they should and sometimes they remain closed even though the pump tuns off.
The switch contacts stay closed until the pressure drops below 90 psi where the contacts open. This may dislodge the internal spring. The pressure switch contacts stay closed. The contacts are not welded shut. The electrical contacts in your pressure switch can degrade over time. You make a temporary repair to contacts by filing away the affected area though be sure to kill all power to the pump before you do.
Even with the points closed there may be no voltage getting through the switch. The contacts stay closed even when the pump is unplugged. The contacts stay open untill the presure once again exceeds the 115 psi cut in point. How a furnace works. Jet pump wont shut off. The pressure protection valve stops airflow out of the wet tank to ctis at around 85 psi so when the contacts open it tells ctis it is out of available air.
These switches are wear parts and need to be replaced at regular intervals to avoid inevitable failure. Fast fix 91518 views. If the contacts are held open and there is no water pressure attempt to cycle the switch by pulling the contacts open.
Gallery of Pressure Switch Contacts Stay Closed
