My Trane xr80 stop working. it shows a 3 flashes of pressure switch

Tco Or Pressure Switch Failed Open. Gsw Water Heater Pressure Switch Failed Open at Leanna Crews blog A failed open pressure switch in a water heater prevents the unit from operating properly Clogged or improper vent installation is the number one culprit behind this issue: Water Heater Pressure Switch Failed Open

So, check the vent at the exhaust and ensure there is nothing like a bird nest that may clog the vent The troubleshooting light blinks 3x which indicates that "Pressure Switch Failed Open"

Honeywell Water Heater Pressure Switch Failed Open at Avery Veazey blog

Customer: Hi, I'm getting 3 flashes on a power vented water heater- tco or pressure switch failed open Contractor's Assistant: Is your water heater gas or electric? How old is it? Customer: gas 6 years Contractor's Assistant: How long has this been going on with your water heater? What have you tried so far? Customer: 2 days Contractor's Assistant: Anything else we should know to help you best? Plug in one of the two wires you disconnected from the pressure switch into the thin piece of metal thus making a jumper out off the flat metal. The troubleshooting light blinks 3x which indicates that "Pressure Switch Failed Open"

Honeywell Water Heater Pressure Switch Failed Open at Avery Veazey blog. This can lead to safety risks and inefficient heating This issue can lead to the heater not functioning correctly

My Trane xr80 stop working. it shows a 3 flashes of pressure switch. A pressure switch in a Rheem water heater plays a crucial role in ensuring safe and efficient operation Turns out the tube between the blower and the switch had a tiny little fleck of debris in it; enough to still pull vacuum when I first check the tube for a blockage, but was insufficient to trip the switch