You have to take the cover off and get inside and unhook a wire. You may have 3 wires unhook 1 and if that doesn't turn it off hook it back up and unhook the next. One of them will turn it off!! Then go to the hardware and get another thermos!! You won't get a shock or anything cause it's not hooked up to any power source, they are just sensor wires. I don't know much about Honeywell, I just know I don't like their thermos. Had one once and had nothing but trouble w/it !!
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Sometimes it is difficult to keep your home cool in the hot summer months. Also, some areas of your home may still be hot where other areas are too cool. Try this method to keep your home cool evenly throughout. Before you get started make sure your furnace filter is new. This will allow for maximum air flow.
If your living space is a single floor plan:
Turn the air conditioning on
Switch the furnace fan from auto to on.
Measure the temperature in each room.
Close the vents by about half in the cooler rooms
This will force more cool air into the warmer rooms.
Keep adjusting the vents until all the rooms have the same temp.
If your living space is on more than one level:
Turn on the air conditioning.
Switch the furnace fan from auto to on.
On the lowest level of the house close half of the vents that are the closest to the stairs.
This will force more cool air to the top floor where it is usually hotter.
Cool air will sink from the upper floors which will keep the area near the stairs cool.
Measure the temperature in all the rooms.
Keep adjusting the vents until you have a nice even temperature throughout the house.
I found that leaving the furnace fan on all the time will keep your home evenly cool and comfortable. You may have to replace your furnace filter once a month due to the increased air flow. It will be well worth it in a cooler, more comfortable, and more energy efficient home.
Details.......does the furnace function normally otherwise? Might just be a stuck fan switch. Make sure the thermostat hasn't been set on Fan ON setting or summer air circ. on older furnaces.
Find the fan switch and tap it and see if fan quits. If it does,fan switch is bad.probably. Always make sure your air circ. filter(return air to furnace) is replaced every 3 mo. or so,too. don-ohio (:^)
Check the furnace filter to make sure its not dirty . Dity airvfilters can cause the furnace to overheat and shut off on a high temperature limit switch when the switchs cools down it resets but the furnace has to be shut off to reset the control board. Hope this helps.
disconnect power from fan. use an ohm meter should be open when cool and closed when hot. you can do same with 110v but be carefull. 110v to one side when cool and 110v on both sides when calling for fan.
it sounds like the low temp limit switch, the one that cools the furnace down with the burner off and the thermostat open, when it cools to a point the fan stops, the other switch in burner area turns burner off/on, hope this helps
Sounds like the flame sensor is dirty or bad. This is a metal rod that sits on the flame telling the controls that the burners is lite and it is okay to keep the gas valve open. If there is no flame it tells the control no flame shuts the gas valve off to keep excess gas from building up in the furnace. It could also be a faulty limit switch which tells the control the furnace is to hot so shuts the furnace down till it cools off. This is easy to check with an ohm meter with the furnace off check for continuity through the switch(usually a round disc looking thing with two wires going to it) if it ohms out then it is okay then run the furnace and after it shuts off check the switch to see if it ohms out if not then you have found the problem if it is okay could be the flame sensor try to clean it with a lit grit sand paper or emry cloth works good.
Usually when the furnace blower motor runs all the time
The limit switch or rollout switch is usually open or bad.
The furnace board is seeing that one of those switches is open, so it brings the blower on to try to get the heat out of the combustion chamber area, so the switch will close. But if the switch is bad and won’t close, the furnace board will keep the blower running continuously.