We are in a brand new house with a brand new furnace. It is set for 69* during the day quot;wakequot; hours and 66* during the night quot;awayquot; hours. The fan is set to auto, and the temperature is set to heat, but it never shuts off. It ran for 4 hours yesterday and the temperature never went above 69* and it didn't turn off for even a few minutes. It's 37* at night, so we still need the heat, but our electric meter is running up because the furnace never shuts off, and it's really a pain to have to manually turn it on and off, plus that doesn't work at night when we're sleeping.Does anyone have any suggestions, or is that common in new houses with new furnaces? (by new I mean new construction, not just new to us)Thank you!
without looking at it sounds like your outside unit is not coming on have you checked its heating up on heatstrips
you may have a defective thermostat
If the temperature doesn't go above 69 then it won't shut down turn the thermostat down until you reach a temperature that turns the furnace off if the thermostat is defective this won't happen.If it does then check the shut of point on the thermostat with a separate thermometer
Either your thermostat is defective or is in a part of the house that doesn't get warm. The thermostat must be able to register the temperature before the boiler will shut down. If the area around the thermostat is perpetually cooler than the rest of the house, that's why the boiler won't shut off. If, however, it is in an area sufficiently warm, then there's probably a defective switch somewhere.
A furnace uses Gas to heat and the fan doesn't come on (in Auto) until the heat exchanger heats up and will go off after the heat shuts off and the fan runs to cool the heat exchanger. If the fan is running all the time, then your fan may be set to on or has a sticking relay. That doesn't necessarily sound like what you are describing, Sounds like you might have a heat pump. If that is the case then you could have some refrigerant problems. ------------------Since it's a heat pump, it's probably too cold outside for it to work efficiently. It should have electric heat strips to compensate for this. It might still have refrigerant problems. Is the outside part frozen up or look white? maybe the defroster isn't working correctly. Best to call a local tech in this situation
