Furnace Repair Checklist
1. Look at the Thermostat
First, ensure your thermostat is instructing your heat to start.
- Replace the batteries if the display is not displaying anything. If the digital display is mixed up, the thermostat may need to be changed.
- Make certain that the control is switched to “heat” as opposed to “off” or “cool.”
- Make sure the program is set to the correct day and time and is set to “run.” If you’re having a hard time overriding the setting, set the temperature by utilizing the up/down arrows and holding the “hold” button. This will cause the furnace to start if thermostat is causing trouble.
- Increase the temperature setting to 5 degrees above the room temperature.
If your heating hasn’t kicked on within a few minutes, make sure it has electricity by switching the fan switch from “auto” to “on.” If the fan doesn’t start, your heater may not have power.
If you utilize a smart thermostat—such as one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting is very model-specific. Check the manufacturer’s website for help. If you aren’t able to get your Wi-Fi thermostat to operate, contact us at 706-695-7492 for heating and cooling service.
2. Check Breakers and Switches
Next, verify your breaker and furnace switch are on.
- Look for your main electrical panel. If you aren’t sure where it is, look for a silver metal box in your basement, garage or closet.
- Make certain that your hands and feet are dry before using the panel or breakers.
- Locate the breaker titled “furnace” or “heat,” and double-check it’s switched “on.” If you discover a tripped breaker, it will be in the middle or “off” position.
- Moving one hand, steadily turn the breaker to the “on” position. If the breaker instantly trips and pops back to “off,” don't try to reset it and contact an expert from True Temp Heating & Air Inc at 706-695-7492 quickly.
Regardless of your furnace’s age or brand, it has no less than one ordinary wall switch positioned on or near it.
- Make sure the switch is flipped up in the “on” spot. If it was switched off, expect your furnace to take up to five minutes to ignite. (If you don’t know where to find your furnace, check your basement, garage or utility closet. It could also be in a crawl space or attic.)
3. Put in a New Air Filter
When we consider heating issues, a grungy, blocked air filter is frequently the top offender.
If your filter is too grungy:
- Your furnace won’t stay on, or it may get too warm from reduced airflow.
- Your utility costs may go up because your heating system is working too often.
- Your heat may stop working prematurely due to the fact a filthy filter causes it to overwork.
- Your furnace might lose power if an excessively filthy filter causes the breaker to trip.
Depending on what make of furnace you use, your air filter will be within the blower compartment of your heating system, an attached filter case or wall-mounted return air grille.
To swap out your filter:
- Switch off your heater.
- Pull out the filter and hold it up to the light. If you can’t view light through it, use a new one.
- Put in the new filter with the arrow motioning toward the furnace to avoid damage.
Flat filters should be replaced every month, while pleated filters should last about three months. If you have children or pets, you could have to replace your filter more often.
To make the process easier in the future, use a permanent marker on your heating system exterior or ductwork to indicate the airflow direction and filter size.
4. Check the Condensate Pan
Commonly known as drain pans, condensate pans capture water your heater pulls from the air.
If liquid is seeping from within your heating system or its pan has too much water in it, follow these steps.
- If your pan has a drain (look for a PVC pipe), make sure that it isn’t full. If it requires draining, drop in a special pan-cleaning tablet you can get at home improvement or hardware retailers.
- If your pan uses a pump, take a look at the float switch. If the button can’t be moved from the “up” position with liquid in the pan, call us at 706-695-7492, because you will probably have to get a new pump.
5. Check for Heating Error Codes
If faults persist, peek inside your heater’s plastic window to check the blower motor’s status. Depending on the brand, the light could also be mounted on the surface of your heating system.
If you note anything except an uninterrupted, colored light or twinkling green light, reach us at 706-695-7492 for HVAC service. Your heating system could be giving an error code that needs specialized help.
6. Brush off the Flame Sensor
If your furnace makes an effort to work but shuts off without distributing warmth, a filthy flame sensor can be responsible. When this happens, your heating system will attempt to ignite three times before a safety mechanism shuts it down for about an hour.
If you feel comfortable with opening up your heating system, cleaning your flame sensor is work you can do on your own. Or, one of our heating service professionals has the ability to do it for you.
If you are confident cleaning the sensor on your own, you require:
- A 1/4” hex screwdriver or wrench
- Section of light grit sandpaper, steel wool or emery cloth
- An unused paper towel
As the next step:
- Turn off the heating system’s power with its wall switch or breaker. If your furnace’s gas valve isn’t electric, you have to turn off the gas along with it.
- Lift off the heater’s front panel and track the wire to the flame sensor.
- Remove the rod and use your sandpaper, steel wool or emery cloth to carefully rub the metal rod.
- Clean the rod with a paper towel.
- Remount the sensor.
- Secure the furnace doors.
- Turn the furnace’s power back on. It may run through a series of inspections before resuming normal running. If your furnace doesn’t turn on, the sensor could have to be replaced or something else may be wrong. If this happens, contact us at 706-695-7492 for heating and cooling repair assistance.
7. Reignite the Pilot Light
If you are using an outdated furnace, the pilot light could be extinguished. To relight it, look for the directions on a label on your furnace, or use these guidelines.
- Find the switch on the bottom of your heating system labeled “pilot,” “on” and “off.”
- Push the switch to the “off” position.
- Don’t do anything for at least five minutes to prevent starting a fire.
- Move the switch to “pilot.”
- Push the “reset” button as you bring the flame of a long lighter to the pilot light opening.
- Release the “reset” button once the pilot light is lit.
If you have used the instructions twice and the pilot light still won’t light or keep lit, call us at 706-695-7492 for furnace service.
Inspect Your Energy Source
Try switching on a second gas appliance. If it doesn’t function, your natural gas service might be switched off, or you may have run out of propane.