Lennox thermostat question
Brrrr! We just experienced that crazy snowstorm on the east coast yesterday, and my HVAC thermostat seems to have become confused, as of last night. I can make the heater kick on by either flipping the breaker switch or by turning the heater on and off at the wall thermostat. But the system seems to think it's reached it's goal within 3 minutes, and it turns off. The house's temp is slowly dropping.
I know NOTHING about such things. Is it possible that something necessary has become covered outside? Any ideas about what I need to do, beyond waiting until I can get a repairman here?
Advice would be much appreciated.