How to Fix a Furnace Pilot Light That Won't Stay Lit
Furnaces are equipped with pilot lights that need to be on, otherwise the furnace will not produce heat. In some cases, the pilot light won't stay lit even after repeated attempts to light it. It can be an unsettling experience. However, fixing a pilot light that won't stay lit is not that difficult if you know the steps.
To start, the first step is to check to make sure the pilot light is set correctly. The flame should have a blue center and a small yellow tip. If the flame is too large and is mostly yellow, the flame has to be adjusted. This can be done by turning the flame adjustment screw until the desired flame size is achieved. The flame should be a steady, low-level blue with a yellow tip. If the flame isn't the correct size and continues to not stay lit, then the issue isn't with the flame setting.
In some cases, the pilot light won't stay lit due to a clogged burner. Grime, dust, and dirt can collect on the burner which prevents proper air circulation. The burner needs to be cleaned with a toothbrush or brush to remove debris. Be sure to turn off the gas and disconnect the power before opening the furnace.
Next, check to make sure the thermocouple isn't the issue. A thermocouple is connected to the pilot light and is responsible for sensing the heat of the flame and allowing the gas to stay on. If the thermocouple is faulty, then the pilot light won't stay lit. If the thermocouple is the cause, it has to be replaced with a new one of the same size and type. It is also a good idea to replace the pilot light as it can become blocked over time.
Finally, ensure that the gas supply is on and that the gas being used is the correct type for the furnace. The furnace manufacturer will specify the type of gas to use, be it natural gas or propane. If the wrong type of gas is used, the pilot light could be difficult to light or won't stay lit.
Fixing a pilot light that won't stay lit can sound like a complicated task; however, it doesn't have to be. By following the steps mentioned above, the issue can be easily resolved. If the pilot light still won't stay lit, it is best to call a local and reliable appliance repair service such as Local Reliable Appliance Repair.
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Pilot Light Won’t Stay Lit Solutions and Best Practices
1. Check the Thermocouple
One of the most common causes for a pilot light not staying lit is an issue with the thermocouple. The thermocouple is a small metal sensor located near the pilot light flame. Its purpose is to detect when the pilot light is lit. If the thermocouple senses that the pilot light is not lit, it will shut off the flow of gas in the event of an emergency. If the thermocouple has become faulty, it may not sense the pilot light and shutdown the gas flow automatically. To verify that the thermocouple is functioning, attempt to light the pilot light and then blow the flame out. If the pilot light does not re-light, then it is likely an issue with the thermocouple and it should be replaced.
2. Test the Gas Flow
It is important to ensure that the gas flow is set to the correct pressure. If the gas flow is blocked or set too low, the pilot light will not stay lit. To test the gas flow, light the pilot light and then use a soapy water solution to look for any escaping gas bubbles around the gas line. If the bubbles appear, it indicates a problem with the gas flow, which should be investigated further.
3. Clean the Pilot Assembly
Dirt and debris can build up in the pilot assembly over time, which can prevent the pilot light from staying lit. To clean the assembly, turn off the gas valve, remove the pilot assembly and use a soft brush and soapy water to clean any dirt and debris. Once the assembly is cleaned, replace it and re-light the pilot light to test if the issue has been resolved.
4. Replace the Burner O-ring
The O-ring inside the burner can become cracked or worn over time, and this can prevent the pilot light from staying lit. To replace the O-ring, turn off the gas valve and remove the burner assembly. Replace the O-ring with a new one, and then re-assemble the burner and re-light the pilot light to test whether the issue has been resolved.
5. Professional Assistance
If none of the above solutions resolve the issue of the pilot light not staying lit, it might be necessary to contact a professional HVAC technician or appliance repair specialist. These professionals will have the knowledge and experience to properly diagnose and repair the issue.
Average Repair Cost for a "Pilot Light Won't Stay Lit" Issue
Are you facing an issue of your pilot light not staying lit in San Diego? Repairing it may be costly but there are some options to help minimise your expenses. Here's a detailed guide on average repair costs, most commonly replaced parts and important tips to keep in mind.
Minimum Repair or Installation Cost
The minimum repair or installation cost for a pilot light that won't stay lit in San Diego ranges from $150 to $200. It includes inspection and testing of the controller, motor, igniter and/or heat sensor, along with any necessary replacement of shut off valve, orifice, and/or pilot tube.
Complex Repair or Installation Price
If your pilot light issue is complex, the cost for repair or installation can be higher. When dealing with a complex issue, the average repair price for a San Diego homeowner can be around $500 to $800, depending upon factors such as type and brand of the equipment, and parts that need to be replaced.
Most Commonly Replaced Parts
These are the most common parts involved when replacing a pilot light that won't stay lit:
- Controller
- Motor
- Igniter/heat sensor
- Orifice
- Shut-off valve
- Pilot tube
- Pilot Thermocouple
Explaining Repair Costs in San Diego
The repair cost in San Diego differs based on the complexity of the work and the kind of equipment used. Generally, repair labor costs approximately $145 to $365, depending on the scale of the repair. Additionally, it may require the purchase of materials and supplies, costing an additional $100 to $300.
Need for Calling a Professional
It is always advised to call a local and reliable appliance repair professional for an issue like this. If you're in San Diego, you can contact Local Reliable Appliance Repair. They are well-equipped and experienced in resolving the issue.
By following the above guidelines and taking the help of an expert, resolving the issue of a pilot light that won't stay lit won't be as daunting as it appears.
Pilot Light Won't Stay Lit? Look No Further for Professional Solutions
When it comes to keeping your HVAC and appliances running properly and safely, your best bet is to hire a professional with experience and expertise to diagnose and repair the issue. At Reliable Appliance Repair, we are here to provide that professional expertise. Reliable is a family-owned local business based in San Diego, providing same-day service for appliance and HVAC repair and installation. As a first-time customer, you can receive $25 off labor.
When you entrust us with your repair needs, you are getting the services of highly trained technicians with a minimum of 5 years experience. We are a licensed and insured company, so you can trust us with your needs. We specialize in pilot light won't stay lit issues, providing quickly diagnostics, repair work, and maintenance. We understand the importance of having your home heated and cooled properly, as well as your appliances running optimally.
Our pricing is always fair and our work is both reliable and efficient, so you can trust us to provide the best solution for your needs. We take great pride in being the most reliable service provider in the San Diego area, specializing in providing the highest quality repairs while charging the most competitive rates.
For help with all your appliance and HVAC repair and maintenance needs, look no further than Reliable Appliance Repair. For more information or to schedule an appointment for same-day service, contact us today at (866) 516-1222. Receive $25 off labor as a first-time customer, and enjoy the peace of mind that comes with conscientious, dependable, and professional service.
FAQ about How to Fix a Furnace Pilot Light That Won't Stay Lit
What is a furnace pilot light?
A furnace pilot light is a small, constantly burning flame that ignites the gas burners in a gas furnace. It functions similarly to a pilot light in a gas-powered stove.
What can cause a furnace pilot light to go out?
A furnace pilot light can go out due to an array of causes including a blocked pilot orifice, a failed thermocouple, a defective gas valve, a faulty ignition control board, or a draft.
How do I troubleshoot a furnace pilot light that won't stay lit?
Troubleshooting a furnace pilot light that won't stay lit involves a set of steps that involve checking the pilot assembly's seals, inspecting the thermocouple and air pressure switch, and replacing ignitors or leaked gas lines.
What’s the best solution for a furnace pilot light that won’t stay lit?
The best solution for a furnace pilot light that won’t stay lit is to call a reliable appliance repair service, such as Local Reliable Appliance Repair at tel:(866) 516-1222 .