Your furnace may be blowing cold air and not shutting off due to issues with the thermostat, a malfunctioning heating element, or a problem with the blower motor. It is recommended to contact a professional HVAC technician to diagnose and fix the issue.
There could be several reasons why an electric furnace won't shut off, including a malfunctioning thermostat, a stuck relay, or a problem with the limit switch. It's best to have a professional technician inspect and diagnose the issue to ensure safe and proper operation of the furnace.
It sound like the thermostat is broken
it wont snow in January because we have had cold wind blowing from Norway and warm air blowing from the Atlantic ocean witch put the 2 together and it makes mild wind
This problems could be the injectors. However it may also be the coil if the coli is going bad it will does this constantly.
did you try blowing it
Thermocouple is probably bad and needs replacing.
Blowing black smoke is indicative of an oil leak in the engine.
It starts cold
occasionally wen they wont shut up
Try drying off the spark plug and spark plug wire area with a hair dryer. The engine may be flooded now so remove the spark plug and let the spark plug and cylinder dry out also.
If you have a water heater in the unit there may be a shut off before that, usually at the floor or follow the cold side to a shut off. There may be an access panel behind the shower, possible in a hall closet but not always and there might be shut off valves there, but not likely. If your water heater is in the basement, there should be a shut off for each unit there.
3 answers spring to mind, an air lock in the water system,a faulty switch on the heater panel( or cable depending on year)or an inline vent flap stuck shut