MGHA-066ABFC-01 Nordyne Intertherm won't shut off
Posted: Wed Dec 10, 2008 2:15 am
I came home to a 91 degree house tonight (mid-Dec) and the furnace wouldn't shut off unless I turned it off at the electrical main box.
Too late to call HVAC repair. Temporary solution: I switched it to AC and set the temp to 75 degrees. Once it hit that mark, the unit turned off, and I set the thermostat to Heat OFF. All is quiet.
However, I would like to know what the problem might be. The furnace doesn't pay attention to the thermostat settings. It won't even shut off when the thermostat (LUX 9000) is turned to HEAT OFF. I reset the thermostat - furnace still running. Only turning off at the electric box worked, but then I read that gas should be shut off if you do that. Had me worried.
For now the furnace is off and I can use my portable elec heater for the night. Has anyone had this problem of a furnace that won't quit heating when it reaches the thermostat setting? (Hate to see my gas bill!)
Thanks!
Elise
Troutdale, Ore.
Too late to call HVAC repair. Temporary solution: I switched it to AC and set the temp to 75 degrees. Once it hit that mark, the unit turned off, and I set the thermostat to Heat OFF. All is quiet.
However, I would like to know what the problem might be. The furnace doesn't pay attention to the thermostat settings. It won't even shut off when the thermostat (LUX 9000) is turned to HEAT OFF. I reset the thermostat - furnace still running. Only turning off at the electric box worked, but then I read that gas should be shut off if you do that. Had me worried.
For now the furnace is off and I can use my portable elec heater for the night. Has anyone had this problem of a furnace that won't quit heating when it reaches the thermostat setting? (Hate to see my gas bill!)
Thanks!
Elise
Troutdale, Ore.