Water Heater Pressure Switch Failed Closed

The contacts in the switch are either stuck together or moisture has entered the switched and seized it in the closed position.

Water heater pressure switch failed closed. The switch activates in response to the pressure ex. 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. Pressure switch failed open. The polaris water heater has an onboard diagnostics system that will flash a red led to indicate a fault.

Step 2 inspect the pressure. Pressure change due to blockage so it opens or closes the circuit sending the impulse to the circuit board for further action. I recently moved into a newly built home and we ve been running into some issues with the hot water and a few other things. It is also possible for the switch to get jammed because the switch itself is faulty.

The switch is connected to hoses and the water in these can sometimes cause a little bit of a problem. 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. Check the switch for any kind of a mechanical jam. We have a 40 gallon hot water tank model gpvt 40 200.

This led is visible through a small window on the access panel near the bottom of the hot water tank. The circuit must be closed at all time during the heating cycle.