Furnace Repair Checklist
1. Inspect the Thermostat
To begin, ensure your thermostat is signaling your heat to ignite.
- Swap out the batteries if the display is blank. If the digital monitor is mixed up, the thermostat could need to be replaced.
- Make sure the button is set to “heat” instead of “off” or “cool.”
- Make sure the program is set to the appropriate day and time and is programmed to “run.” If you’re having a hard time getting out of the schedule, regulate the temperature with the up/down arrows and using the “hold” button. This will cause the furnace to turn on if thermostat is causing a problem.
- Turn the temperature setting to 5 degrees warmer than the room temperature.
If your heater hasn’t started within a couple minutes, make sure it has juice by toggling the fan switch from “auto” to “on.” If the fan doesn’t operate, your heating system may not have power.
If you utilize a smart thermostat—for example one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting will depend on your model. Check the manufacturer’s website for assistance. If you’re still unable to get your Wi-Fi thermostat to work, reach us at 662-269-8716 for heating and cooling service.
2. Examine Breakers and Switches
Next, confirm your breaker and furnace switch are on.
- Locate your main electrical panel. If you don’t know where it is, keep an eye out for a silver metal box in your basement, garage or closet.
- Make certain that your hands and feet aren’t moist in advance of using the panel or breakers.
- Look for the breaker titled “furnace” or “heat,” and ensure it’s turned “on.” If the breaker has tripped, it will be in the middle or “off” position.
- Using one hand, steadily flip the breaker to the “on” position. If the breaker instantly trips and pops back to “off,” don't try to reset it and contact a team member from Booneville Heating & Cooling LLC at 662-269-8716 right away.
It doesn’t matter how old your furnace is or what brand it is, it has at minimum one standard wall switch installed on or close to it.
- Ensure the switch is flipped up in the “on” position. If it was shut off, anticipate your furnace could take up to five minutes to turn on. (If you’re unaware of where to locate your furnace, check your basement, garage or utility closet. It might also be in a crawl space or attic.)
3. Get a New Air Filter
When we consider heating problems, a filthy, blocked air filter is frequently to blame.
If your filter is too dusty:
- Your heat won’t stay on, or it might get too hot from reduced airflow.
- Your gas costs could go up because your heating system is turning on too often.
- Your heater may break down too soon since a dirty filter triggers it to work harder.
- Your heating can be cut off from power if an overly filthy filter causes the breaker to trip.
While it depends on what type of heater you use, your air filter can be found 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 furnace.
- Pull out the filter and angle it toward the light. If you can’t view light through it, use a new one.
- Insert the new filter with the arrow pointing toward the heating system to keep damage from happening.
Flat filters ought to 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 sooner.
To make the procedure easier down the line, use a permanent writing tool on your heating system housing or ductwork to indicate the airflow direction and filter size.
4. Look at the Condensate Pan
Also known as drain pans, condensate pans capture water your heater draws from the air.
If moisture is leaking from your heating system or its pan is overflowing, follow these steps.
- If your pan includes a drain (look for a PVC pipe), make sure that it’s clear. If it should be drained, use a special pan-cleaning tablet you can purchase at home improvement or hardware stores.
- If your pan has a pump, inspect the float switch. If the lever is jammed “up” with water in the pan, call us at 662-269-8716, because you will probably need a new pump.
5. Look for Heating Error Codes
If failures persist, look at your furnace’s plastic window to verify the blower motor’s status. Depending on the model, the light could also be fixed on the exterior of your heater.
If you see anything else besides a steady, colored light or twinkling green light, reach us at 662-269-8716 for HVAC service. Your heater might be communicating an error code that requires pro help.
6. Brush off the Flame Sensor
If your furnace tries to work but turns off without putting out heat, a dusty flame sensor could be responsible. When this happens, your heating system will try to turn on three times before a safety feature powers it down for around an hour.
If you feel okay with opening up your heater, brushing off your flame sensor is a job you have the ability to do personally. Or, one of our heating service specialists is able to complete it for you.
If you are fine with cleaning the sensor on your own, you require:
- A 1/4” hex screwdriver or wrench
- Bit of light grit sandpaper, steel wool or emery cloth
- A dry, clean paper towel
- Turn off the heater’s power by using its wall switch or breaker. If you don’t have an electric gas valve, you will need to turn off the gas in addition.
- Lift off the furnace’s front panel and trace the wire to the flame sensor.
- Unscrew the rod and use your sandpaper, steel wool or emery cloth to carefully scrub the metal rod.
- Clean the rod with a paper towel.
- Remount the sensor.
- Put the furnace doors back on.
- Switch the furnace’s power back on. It could run through a sequence of checks before resuming normal running. If your furnace doesn’t start, the sensor could need to be replaced or something else could be creating an issue. If this takes place, call us at 662-269-8716 for heating and cooling repair support.
7. Light the Pilot Light
If you own an outdated furnace, the pilot light could be turned off. To reignite it, look for the steps on a sheet on your furnace, or try these guidelines.
- Locate the switch below your furnace labeled “pilot,” “on” and “off.”
- Turn the switch to the “off” position.
- Wait at least five minutes to limit the possibility for creating a fire.
- Turn the knob to “pilot.”
- Hold down the “reset” lever as you push the flame of a long lighter to the pilot light opening.
- Depress the “reset” switch once the pilot light is burning.
If you have gone through the list twice and the pilot light still won’t light or remain lit, call us at 662-269-8716 for furnace service.
Double-Check Your Gas Source
Try turning on an additional gas appliance. If it doesn’t operate, your natural gas delivery might be shut off, or you may have run out of propane.