Problems with the heating system during the Winter can leave your home uncomfortably cool. By troubleshooting heating issues, you could get the warm air circulating again without any cost or inconvenience. Here’s what to do.
Begin With the Thermostat
If the display screen is dead, a simple battery replacement may be all that’s needed. If not, make sure the thermostat is on the “heat” setting. Raise the temperature by a few degrees. If the blower doesn’t cycle on and begin pumping out hot air, locate the furnace breaker in your main electrical panel. Reset it by switching off and then on again. If the furnace still doesn’t respond, check whether the blower compartment door is properly closed. The door has to make contact with a power button located behind it for the furnace to start.
Check the Air Filter
Depending on the HVAC system, the filter may be inside the blower compartment or behind a return air grille. If the filter is dirty and blocking crucial system airflow, the amount of warmth flowing from the registers will decrease. Severely restricted airflow can also activate the high limit switch, which shuts down the furnace to prevent a fire due to overheating. To avert these issues, check the air filter monthly and replace it when you see signs of accumulating dust and debris.
Check the Burner Flame
Older furnaces rely on a pilot light to keep the burner lit, and if it goes out, the unit won’t produce heat. It’s easy to relight using the manufacturer’s instructions, which may be stamped on the furnace near the pilot opening.
Alternately, check in the owner’s manual. Newer furnaces use an electronic ignitor that can be manually reset. Find the gas reset valve inside the burner compartment. Turn it off, wait five minutes, then turn it back on. If the furnace starts up but doesn’t stay running, the ignitor may have gone bad, so contact your HVAC contractor for help.
If you need expert advice about troubleshooting heating issues in your South Houston, League City or Pasadena area home, please contact us at Valderrama A/C & Refrigeration.
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