Why Furnace Ignition Problems Occur And How To Deal With Them

What are ignition problems in a furnace?

Ignition problems occur when the heating system cannot start the combustion process necessary to generate heat. This can be due to a malfunctioning ignition element, low gas pressure, electronic system malfunctions, or other factors. Ignition problems can manifest themselves in the form of:

• Inability to turn on the heating system.

• Frequent automatic shutdown of the furnace.

• Uneven heating of the room.

The main causes of problems with ignition in the furnace

Malfunction of the igniter (igniter)

Modern furnaces often use an electric igniter, which has replaced the traditional pilot light. Accumulation of dirt will, at times, damage the electric parts or cause them to stop functioning as expected. In other words, the furnace will not start if the igniter cannot produce enough heat to cause combustion. Superior HVAC Service furnace repair technicians have the experience and equipment to diagnose and fix problems with your furnace's ignition, ventilation, or overheating: https://superiorhvacservice.ca/brampton/furnace-repair/.  They will quickly identify the problem's cause and advise on how to continue using the furnace. 

Clogged burner

One of the frequently encountered problems is the clogging of the gas burner used to feed the fuel for combustion. Fouling the burner hampers smooth gas distribution and interferes with ignition. 

Problems with the flame sensor

The flame sensor measures the existence of a flame after the ignition stage. If the sensor is damaged or dirty, it will also give a false signal that there is no flame and the furnace here is switched off for safety. 

Insufficient gas pressure

If the gas pressure in the system is too low, the furnace will not start as it should. This may be attributed to complications in the gas line or the regulator. Regular maintenance is one of those proven methods that can effectively prevent issues with the ignition of a furnace. 

Problems with ventilation

The furnace needs a constant supply of fresh air to operate efficiently. Blocked vents or chimneys can disrupt the combustion process.

Controller malfunction

Electronic control systems responsible for synchronizing the gas supply and ignition can malfunction. This can happen due to electrical interference, a faulty control board, or aging components.

How to deal with ignition problems in the furnace

1. Regular maintenance and cleaning

Prevention of ignition problems is much easier, and one way is frequent furnace maintenance. Another important aspect is thorough cleaning of the burners and temperature sensor, the shape of the igniter, the cleanliness of the vents, and the chimney. Maintenance will reduce the occurrence of breakdowns, equal heating will be produced, and the lifespan of the system will increase. The system should be checked annually or earlier during heating for proper and safe functions during the cold season.

2. Check the igniter

If you already have an ignition problem, first check the condition of the ignition element. If necessary, it can be replaced. The electric igniter is usually available for replacement, but contacting a furnace repair Brampton professional is better.

3. Cleaning or replacing the temperature sensor

If the furnace does not maintain combustion after ignition, check the thermal sensor. Sandpaper or special products can remove deposits.

4. Check the gas supply

Check the gas supply system for leaks or blockages. Contact your gas company or a certified technician if the gas pressure is insufficient.

5. Check the ventilation system

Ensure that chimneys and vents are clear and not blocked by snow, ice, or other objects. This is especially important in Canada when ventilation systems can become clogged with ice in the winter.

6. Calling a professional

If this is a complicated issue or has happened before and is happening again, then it is advisable to call a furnace repair professional. They will first identify the problem, identify the source of the malfunction, and then solve it without compromising your safety.

Are ignition problems the most common furnace problem?

Yes, ignition problems are among the most typical issues reported by the users of furnaces. One of the common problems of a fan is a poor distribution of airflow, which causes a buildup of heat in the furnace with little distribution to the room. Faulty filters or low levels of circulation also create a negative impact as they lead to overheating the whole system, thus lowering efficiency and service spans. Thermostat issues are related to the temperature deviations that develop across the heating system; this hampers furnace functionality, increases energy utilization rates and puts more pressure on hardware. These problems do not occur because of regular maintenance. In heating systems, maintaining boilers is just as important as maintaining furnaces, as maintaining boilers are at risk of corrosion or deposits, which can lead to serious damage in the long run.

How can I prevent problems with my furnace in the future?

Regular maintenance

Maintaining your furnace not only prevents breakdowns but also extends the life of your system.

Change the filters

Dirty filters restrict airflow, which can negatively affect the furnace's performance. Change the filters at least every 2-3 months.

Check the electronics on time

Make sure all electronic components are working properly. If you suspect a malfunction, contact a professional.

Pay attention to unusual sounds or odors

If you notice any strange noises or gas odours, turn off the system immediately and call a professional.

Conclusion.

Some of the symptoms associated with ignition problems in a furnace include inadequate heating and potential early failure. The main causes can be igniter failures, temperature sensors, burners, and ventilation or gas supply issues. These malfunctions will not be experienced if the machine and the fuel are well maintained and repaired on time. However, if you encounter any problem with your furnace, call a professional furnace repair technician to take care of your system.