DIY

Thermostat Not Working THERMOSTAT BLANK or THERMOSTAT DOESN’T WORK– The display on a digital thermostat shows no information or the thermostat does not function properly. POSSIBLE PROBLEM & DESCRIPTION Bad Batteries Most digital thermostats require batteries. Try replacing the thermostat batteries and see if the display returns. Watch Video. Loss of Power to the Furnace Low voltage power […]

Thermostat Blank THERMOSTAT BLANK or THERMOSTAT DOESN’T WORK– The display on a digital thermostat shows no information or the thermostat does not function properly. POSSIBLE PROBLEM & DESCRIPTION Bad Batteries Most digital thermostats require batteries. Try replacing the thermostat batteries and see if the display returns. Watch Video. Loss of Power to the Furnace Low voltage power for […]

Odor ODOR – On a unusual smell coming from the furnace or ductwork. POSSIBLE PROBLEM & DESCRIPTION Seasonal Start-Up It is normal to have a burning smell (and sometimes even a small amount of smoke) from the furnace the first time that it comes on in cold weather. This is the result of heating the dust […]

Noise NOISE – An unusual sound is coming from the furnace. POSSIBLE PROBLEM & DESCRIPTION Loose Belt Some older furnaces use a belt-drive motor and blower system. When the belt becomes loose it can generate a squeaking or squealing noise (especially on start-up). A damaged belt may cause a thumping noise. Bad Blower Bearings – Qualified […]

Pilot Out PILOT OUT – On a “standing-pilot” furnace, the pilot light is not burning and the furnace will not come on. POSSIBLE PROBLEM & DESCRIPTION Bad Thermocouple Many older gas furnaces utilize a “standing pilot” (a small pilot flame that burns continuous inside the burner compartment). Standing pilot furnaces require a thermocouple to ensure that […]

Burners Won’t Stay Lit BURNERS DON’T STAY LIT – The furnace burners fire, but go off before the thermostat temperature is satisfied. https://www.youtube.com/watch?v=TH24B-WdsAo POSSIBLE PROBLEM & DESCRIPTION Dirty Flame Sensor – Qualified Technician Recommended After a gas furnace opens the gas valve to allow gas into the combustion chamber, the furnace control board will monitor for […]