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What is wrong when furnace running in the cycle of gas turning up then fan turning on then thermostat not displaying plus gas turning down then fan stopping then thermostat displaying again?
Wiki User
∙ 15y ago
Sounds like a limit is tripping, removing 24vac from "R" when it opens and restoring it after cooling down. Your description needs significant refining before a remote diagnosis could be possible however. lc
Wiki User
∙ 15y ago
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What is wrong if you turn the thermostat to off but the furnace is still running?
When you say the furnace is still running, I take that to mean the fan and not the actual flame portion of the furnace. If this is correct, you either have a fan relay that is sticking closed or your tstat is bad. == == == == There may be a very slight time delay the the thermostat before turning off the furnace, but if you are sure that you have turned the thermostat off and the fire continues to burn, you have a serious problem. Have it checked out. The gas valve may be sticking in the open position. Regards
Why is the heat and air system only working on emergency heat?
when running the heat-pump the air blowing from the heat ducts is not hot ( it's to cold for the heat-pump). you have a main furnace and it won't turn on ( is thermostat selected for this source), ( is the power switch for main furnace on ), ( is fuse for this furnace good). If these are good (check thermostat wiring at thermostat, and transformer).
Why does Gas furnace not stop running when reaches temp?
Could be your thermostat isn't satisfied, caused by where is your thermostat located. It should be away from doors windows in the main room of your house.
How do you know if you need to replace your thermostat?
Well, I don't mean to sound snarky, but when it doesn't work anymore! The thermostat, in its most basic form, is just a switch to turn the heater on. If the heater turns on and off like it should, it is OK. If the heater doesn't turn on, or worse yet doesn't turn off, you should look into getting a new one. Some tests you can perform: Heater doesn't turn on? Get at the wires running to the thermostat and touch the two control wires (You will have to look into the furnace documentation if you have more than two wires) together. If the furnace clicks on, it's the thermostat. If it doesn't, it's the furnace. Heater doesn't turn off? When the furnace is running disconnect one of the control wires. If the furnace shuts off it's the thermostat. If it doesn't, it's the furnace.
How do you know if you need to replace your home thermostat?
Well, I don't mean to sound snarky, but when it doesn't work anymore! The thermostat, in its most basic form, is just a switch to turn the heater on. If the heater turns on and off like it should, it is OK. If the heater doesn't turn on, or worse yet doesn't turn off, you should look into getting a new one. Some tests you can perform: Heater doesn't turn on? Get at the wires running to the thermostat and touch the two control wires (You will have to look into the furnace documentation if you have more than two wires) together. If the furnace clicks on, it's the thermostat. If it doesn't, it's the furnace. Heater doesn't turn off? When the furnace is running disconnect one of the control wires. If the furnace shuts off it's the thermostat. If it doesn't, it's the furnace.
What would cause THE heating unit not to turn off?
Bad thermostat, bad high limit switch. Check to make sure that its just not the fan running which makes it look like the furnace is running. If you check, and find the furnace is running and is still firing, shut it down and call a hvac company.
What are is the purposes of displaying campaign lawn signs?
The purposes of displaying campaign lawn signs, are simple. By displaying these signs, the public is being notified and constantly reminded of who is running, and what they are running for.
Do the return vents attached to furnace need to be closed when air conditioning is running?
Not really, there's not much airflow when the furnace is not running.
Why is my house air conditioner running but no air is coming out of vents?
Check your furnace fan. The air conditioner unit can be running but the air circulation is usually done with the fan on the furnace. If you have a fan switch on the thermostat, check to see if it is in the auto position. If it has the settings on/auto/off, you can switch it to the on position and see if you get any air movement then. If not, you could have a broken belt.
What is the normal running temp for a Chevy 350?
That depends on the thermostat. If it's a 185 thermostat, the engine should run at 185. If it's running too hot, check the thermostat, radiator and water pump. If it's running too cold, replace the thermostat.
Can the fan timer control board on a York furnace cause the furnace to continue running with the burner in operation?
yes it can fan
Why was water running in boiler when thermostat off?
The thermostat controls only the temperature of the water.
