Wiktor Wise
Electric furnaces are a great way to keep your home warm, but what happens when they don't turn on? There are several reasons why your electric furnace may not be working, ranging from a simple fix to a major issue. In this guide, we will explore common problems and provide troubleshooting tips to help you identify and resolve issues with your electric furnace, ensuring your home stays warm and comfortable during those cold winter months.
| Characteristics | Values |
|---|---|
| Troubleshooting steps when an electric furnace won't turn on | Check the furnace power switch, reset the breaker, check for blown fuses, check the circuit breaker, check the thermostat, check the capacitor, check the blower motor, check the wiring, check the control board |
| Reasons for an electric furnace not turning on | Circuit overload, electrical short, loose connections, dirty relays, clogged filter, faulty thermostat, faulty capacitor, faulty blower motor, damaged wiring, burnt-out heating elements |
| Possible fixes | Reset breakers, replace fuses, adjust thermostat, get a programmable thermostat, replace capacitor, repair/replace blower motor, replace wiring, repair control board |
| When to call a technician | When the problem is not a simple DIY fix, when there is a persistent issue with tripped breakers, when there is a suspected electrical short, when there is a problem with the control board, when the blower fan motor has burnt out, when there is a problem with the wiring, when the thermostat needs to be inspected and tested |
Explore related products
What You'll Learn
Check the power switch is on
If your electric furnace is not turning on, it is important to check that the power switch is on. The power switch is the furnace's power source and is usually located next to the furnace or on its side. It will resemble a light switch. Confirm that the switch is in the "on" position. If it is not, your furnace will not turn on.
If your furnace still does not start up, it could be due to a blown fuse or a tripped circuit breaker. If the circuit breaker controlling your furnace trips, it will need to be reset. Check your breaker box to see if you have a tripped HVAC circuit breaker. If you have a tripped circuit breaker, flip the tab to restore power to your furnace.
If your furnace still does not turn on, there may be a problem with the wiring. The wiring that runs from the thermostat to your electric furnace can get damaged and prevent the signal from reaching the furnace. If you are unsure of the cause, an HVAC technician can help you identify and fix the problem.
It is also important to check your thermostat settings. If the thermostat is not set correctly or is malfunctioning, it will prevent the furnace from running. Ensure that the thermostat is set to the correct temperature and that it is not set too low.
If your furnace still does not turn on after checking the power switch, fuses, circuit breaker, wiring, and thermostat, it is recommended to contact a professional for further assistance.
Calculating BTU for Your Electric Furnace: A Step-by-Step Guide
You may want to see also
Explore related products
Reset the circuit breaker
Resetting the circuit breaker is a common solution when your electric furnace won't turn on. Here is a step-by-step guide on how to do it:
Locate the Circuit Breaker
The circuit breaker for your furnace may be in your main electrical panel, or there may be a separate sub-panel near your furnace. It is designed to instantly trip and shut off power to the furnace if the circuit gets overloaded due to a short or another issue.
Turn Off the Heating
Before resetting the circuit breaker, ensure you turn off the heating at the thermostat. This is an important safety measure to prevent any issues when the power is restored.
Once you have located the circuit breaker, reset it. Depending on the setup, you may need to turn the switch or breaker back on, or in some cases, press a reset button. This button is usually red or yellow and located inside the blower compartment.
Turn the Heating Back On
After resetting the circuit breaker, you can turn the heating back on and adjust the temperature. If the circuit breaker trips again, do not keep resetting it as this could be dangerous. Instead, have your furnace inspected, as this indicates a loose electrical connection, damaged wiring, or another issue causing the circuit overload.
Prevent Overloading the Circuit
To prevent overloading the circuit in the future, avoid running other large electrical appliances on the same circuit as the furnace. You can also consider moving your furnace to its own dedicated circuit.
Deadlifting: Avoiding Electric Shock Hazards
You may want to see also
Explore related products
Check the capacitor
A furnace capacitor is a small, cylinder-shaped component that acts as a backup battery, providing a temporary boost of power to the system's motors during startup. It is important to regularly check the capacitor to ensure the electric furnace is operating safely and efficiently.
Before inspecting the capacitor, it is crucial to prioritise safety. Disconnect all power to the furnace, including both gas and electric sources, and wait for it to completely power down. Working with electrical components like capacitors carries risks, so it is recommended to wear rubber-insulated gloves and use appropriate tools to prevent shocks. If you are uncomfortable or unsure about handling electrical equipment, it is best to contact a qualified HVAC professional.
When capacitors start to fail, they can exhibit various symptoms. One of the most common indicators is hearing a loud clicking or buzzing sound as the furnace starts up. This noise is produced as the relays and switches attempt to send power to the blower motor. Additionally, a failing capacitor may cause the furnace to stop and start erratically, or the blower motor may run slower than usual, generate excessive heat, or experience short cycling.
If you suspect a capacitor issue, you can perform some basic troubleshooting. First, set the temperature on your thermostat slightly higher, then stand near the furnace and listen carefully as it attempts to start. You may hear a clicking sound as the relay sends power to the capacitor or motor, followed by a humming noise from the blower motor. If you notice these sounds or other signs of capacitor failure, it is advisable to switch off the furnace at the thermostat and contact a professional HVAC contractor for further assistance.
Tesco Price Promise: Electricals Price Match Promise Explained
You may want to see also
Explore related products
Check the thermostat
If your electric furnace isn't turning on, checking the thermostat is a crucial step. The thermostat signals the furnace to start and stop, so if it's not set correctly or is malfunctioning, the furnace won't run.
First, ensure the thermostat is set to the desired temperature. If the room temperature hasn't dropped below the thermostat's set temperature, the furnace won't turn on. Adjust the thermostat to a higher temperature to see if the furnace starts. Also, check the thermostat's setting; if it's set to "ON" instead of "AUTO," it might prevent the blower from turning off.
If the thermostat is set correctly, the wiring between the thermostat and the furnace could be damaged. This damage can prevent the signal from reaching the furnace, causing it not to turn on. In such cases, contact an HVAC technician to inspect and test the thermostat and wiring.
Additionally, a faulty thermostat could be due to a bad capacitor. A capacitor is an electrical component that helps start and run the furnace motor. If the capacitor fails, the furnace may not turn on. An HVAC technician can test and replace the capacitor if needed.
If your furnace is generating heat but no air is circulating, the blower fan motor may have burnt out or the blower fan assembly could be misaligned. In this case, you'll need to call a technician for repairs, as the blower fan is not a DIY fix.
Electric Sheep Dreams: Androids and Their Cinematic Journey
You may want to see also
Explore related products
Call an HVAC technician
While there are some simple troubleshooting steps you can take yourself, if you're unsure about any aspect of your electric furnace, it's best to call an HVAC technician. HVAC systems are intricate, with various components working together to provide optimal indoor temperatures and air quality. Attempting DIY repairs can be challenging and risky, and incorrect diagnoses or improper repair techniques can lead to further damage or safety hazards.
Before calling an HVAC technician, there are some basic checks you can perform. First, check the power switch is on, and if the circuit breaker has tripped. If the circuit breaker trips again after resetting, this indicates a loose electrical connection or damaged wiring, and you will need to call a technician. You can also check for blown fuses, but replacing them is not recommended without professional help. If your furnace is running but not producing enough heat, the problem could be a clogged filter, dirty air ducts, or a faulty thermostat. These are simple fixes that you can attempt yourself, but if you're unsure, a technician will be able to help.
If your furnace is making strange noises, such as banging, clanking, or knocking, this could indicate a more serious problem, and you should call a technician. Similarly, if your system is vibrating, this could be due to worn bearings or loose parts, and you should call a qualified technician as soon as possible. If your blower doesn't turn off, this could be due to a faulty relay, which is not a DIY fix. Your HVAC technician will be able to fix this for you.
Finally, if you have any concerns about your HVAC system, it's always best to call a professional. They will be able to discover the cause of the issue and fix it promptly and effectively. Many HVAC manufacturers offer warranties that require repairs and maintenance to be performed by authorized technicians, so attempting DIY repairs could void these warranties.
Electric Rates: Commercial vs. Residential, Who Pays More?
You may want to see also
Frequently asked questions
First, check the furnace power switch, which is usually located next to the furnace or on its side. If the switch is on, check your circuit breaker and reset it if necessary. If your furnace still won't turn on, you may have a blown fuse.
The fuse box should be located within an access panel on the unit. You should be able to tell if a fuse is blown by looking inside the box.
You will need to replace the fuse. While this is technically possible to do yourself, it is not recommended.
A faulty thermostat could be the issue. Check your thermostat to make sure it is not set too low, and consider upgrading to a programmable thermostat.
If your furnace still won't turn on, it's time to call an experienced HVAC technician.
