The function of your furnace limit switch is to tell the fan when to turn off and on depending on the temperature in the home. It's possible to reset the switch at home when necessary by following a few simple steps. However, for your own safety, don't attempt to reset the switch without first consulting your furnace's instruction manual.
Submitted by4 decades agó
l experienced a was unable limit switch final calendar year and got an HVAC guy come within and substitute it. it worked well good many of last winter. after that I got behavior of ignitor glows reddish but fuel solenoid wouldn'capital t open. bought a different limit again. it had been the limit switch. its just that the outlet needs to end up being broken by disconnecting the fittings and reconnecting. it functions for couple days, then wants another detachment to reset to zero.
it seems like routine is achieving capacitance or sométhing
My furnace is stumbling the high limit. It can be a Downflow Payne 90+ have changed the limit switch. I taken the blower door away from and examined all grills to make sure they are open up and it nevertheless short series. I furthermore transformed the rate on the blower and checked gas stress. I'meters stumped! Will anyone possess any suggestions as to what'h going on?
Chris Cudmore11.7k66 money badges4545 sterling silver badges7979 bronze badges
DallasDallas
1 Response
The just method the plenum can get hot enough to strike the higher limit can be absence of atmosphere flow.Open up all signs up and dampers and take the filtration system away.If it nevertheless gets too hot your central atmosphere 'A' coils may be connected with grime.
Jim NavotneyJim Navotney