What causes hot surface ignitor failure?

As mentioned above, sometimes the cause of a furnace ignitor failing to ignite is due to a safety issue, such as a clogged air filter, for instance. Air filters should be changed on a regular basis, to prevent these kinds of problems. So, if your furnace is failing to ignite, it’s a good idea to check the air filter.

Can you repair a hot surface ignitor?

Changing the hot surface ignitor on a gas furnace is a repair that can easily be accomplished with minimal tools. If you have this type of ignition system I recommend keeping a spare ignitor.

Are hot surface ignitors universal?

The Eastman hot surface ignitor is manufactured using premium silicon nitride for a long-lasting performance in high-temperatures. This universal ignitor is a replacement part for use in gas-fired appliances like furnaces, water heaters, and boilers, compatible with over 150-OEM models.

Can you clean a hot surface ignitor?

It is not necessary to clean a hot surface igniter as it blow off any dust. However contrary to silicon carbide ceramic hot surface ignitor which are very brittle and shouldn’t be touched, silicon nitride hot surface ignitor are very robust and can be cleaned manually iff really necessary.

How much does it cost to replace a hot surface ignitor?

Ignitor Replacement Cost An ignitor replacement costs $150 to $250 unless it happens in the middle of the night. After hours or emergency service fees can raise that to $300 to $500. This part fails more than any other.

What are the symptoms of a bad igniter?

Symptoms of a Bad or Failing Ignition Ignitor

• Engine misfires and decrease in power, acceleration, and fuel efficiency. One of the first symptoms of an issue with the vehicle’s igniter is engine performance issues.
• Check Engine Light comes on.
• Car is not starting.

Can I replace furnace ignitor myself?

Replacing the ignitor is an easy job, but the component is very brittle and can break easily. You may choose to replace it yourself or contact a repair technician. If you’re not comfortable replacing the ignitor yourself, find a qualified HVAC technician or service company to do the job.

Can a 17 SEC igniter be used on a 34 sec hot surface?

Note: A 17- or 20-sec igniter can be used on a 34- or 40-sec application, but you could not use a 17- or 20-sec module with a 24- or 40-sec igniter. At the end of the igniter warm-up period, the gas valve main opens.

Can a hot surface igniter be handled by a ceramic holder?

Some service technicians may be surprised to learn that the silicon carbide element of a hot surface igniter (HSI) can be handled without damage. However, it is better and safer to handle the igniter by the ceramic holder. The myth that the silicon carbide tip cannot be handled because body oils cause contamination is untrue.

How big should the sensor be on a hot surface igniter?

Make sure that about 3¼ to 1 in. of the flame sensor or igniter sensor is continuously immersed in the flame for the best flame signal. Bend the bracket or the flame sensor, and/or relocate the sensor as necessary. Do not relocate an igniter or combination igniter-sensor. 2.

When did graphite start making hot surface igniters?

After Graphite Sales Inc. bought the silicon carbide/hot igniter business from the Carborundum Company in 1997, Surface Igniter, LLC was established. Hot surface ignition was introduced as an ignition source for gas clothes dryers in the ‘70s, but its use quickly became widespread throughout the gas industry.