To troubleshoot gas furnace burners that do not ignite, inspect the pilot light, ensure the gas valve is on and perform other common troubleshooting tasks. Review the owner's manual for model-specific troubleshooting instructions.Know More
Follow these steps below to troubleshoot furnace ignition problems:
Older furnaces have pilot lights, which can become loosened or clogged. To unclog a pilot orifice, first turn off the gas and power to the furnace, and then use a thin wire to unclog the debris within the orifice. Ensure the pilot light's flame adjustment screw is turned high enough for the flame to not have any yellow in it.
Refer to the owner's manual for specific instructions on how to relight a pilot light, or consult a professional.
On furnaces that feature an electronic ignition, turn the power off and then on again to reset the module.
The furnace needs to receive gas to operate, so inspect the gas valve to ensure it is still in the "On" position. If there are other gas appliances in the home, turn them on to make sure gas is still being supplied to the home.
If common troubleshooting tasks fail, consult a professional to inspect the furnace and perform maintenance and repairs.
By checking the furnace's power supply, thermostat, filters, pilot and gas valve, a homeowner can determine why a furnace motor blower is not turning on or functioning properly according to popular contractor Bob Villa. Either the blower needs servicing or another component of the furnace could be causing it to malfunction.Full Answer >
To install a gas furnace thermocouple, turn off the gas and power, access the thermocouple through the access panel, remove the old unit, install the new unit and relight the pilot light. Consult a professional with any questions, and immediately turn off the gas and power if the new thermocouple does not operate properly.Full Answer >
In contrast with older gas furnaces, an oil burning furnace does not use a pilot light. An oil furnace typically uses an electronic ignition switch system. to power up.Full Answer >
Troubleshooting a furnace that does not turn off begins with examining it for a malfunction or clog. The thermostat, air filter and fuel supply can all be examined in less than an hour. If the error cannot be identified during these steps, contact your manufacturer and have a certified technician examine the furnace.Full Answer >