WebDec 14, 2015 · Provided that you have inspected the environment thoroughly and found that the air supply is solidly non-flammable and there is adequate airflow as outlined by @Tester101, the part is only CA$22.00 here … WebA "high limit" switch protects the furnace against overheating and damage -- it's located in the output duct, or plenum, of the furnace and turns the furnace off if things get too hot up there. The usual cause of a high limit trip is inadequate airflow -- in your case, because an apparently faulty connection was causing the fan to not run.
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WebIn this episode of Repair and Replace, Vance shows how to replace the flame roll-out switch in a gas furnace. The flame roll-out switch is a safety switch th... Web105 products Get a reliable limit switch from Grainger to regulate your furnace fan or blower. Find a large selection of limit switches and other fan controls, including snap disc controls, adjustable fan switches and limit and plenum thermostat switches. green earth conservation lawns
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WebJul 26, 2024 · #1 Just installed my new heater. It keeps tripping the high limit 2 switch. I think it’s a 135 degree trip. I put a thermocouple on that switch and noticed that if the side cover is off, it runs 120 - 128 degrees. If I put the cover back on it runs 127 - 137 degrees and trips. Why would it run so hot. WebHere (above) is a photo of a more traditional single-function heating boiler limit controls. In this example the aquastat or limit switch is being used on a tankless coil that happens to be on steam boiler. If you click the image to enlarge the photo, you'll see that the temperature limit on the control is set to about 140 °F. WebThe high limit switch is found on the location as the upper thermostat. It also has a button that stops it from working, especially when the water goes above 170F. To restore it to default settings, press this button. To set the thermostat on a water heater, you will need to adjust both thermostats to similar temperatures. flubacher \u0026 co