What Causes Delayed Ignition in a Gasoline Furnace?


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When you’re a frequent reader of our weblog, you’ll know that we frequently talk about alarming sounds in a furnace that require immediate consideration. Certainly one of these is a booming sound in a fuel furnace. That’s as a result of this sound is commonly made by a fuel furnace’s delayed ignition. What you’re listening to is actually a mini explosion when one thing is impeding the furnace’s capacity to ignite when it’s imagined to. 

There are various potential causes for delayed ignition. It doesn’t matter what the trigger is, one factor is for sure: delayed ignition is one thing that needs to be addressed ASAP. Delayed ignition can doubtlessly result in a hearth in your house. It may possibly additionally trigger injury to your furnace when it’s subjected to those fixed mini-explosions. Let’s go over 4 potential causes.

1. Moisture Buildup

A typical explanation for delayed ignition is a buildup of moisture within the furnace. After a interval of inactivity, moisture can corrode the firebox in your furnace. That corrosion builds as much as the purpose that it begins to dam the ports that feed fuel into the burners. When these ports get blocked, the burners down the road can’t gentle instantly. Additional moisture may result in extra rust which will also be problematic and intervene with the ignition course of.

2. Soiled Burners and Obstructed Gasoline Strains

Whereas moisture and rust are the more than likely explanation for delayed ignition, mud, filth, grime, and even lint can accumulate and delay ignition. Delayed ignition will also be brought on by a sulfur buildup brought on by the method of burning pure fuel.

These are all the explanation why delayed ignition is commonly an issue we see in soiled furnaces that haven’t acquired the good thing about annual cleansing that happens on a upkeep go to. The excellent news is {that a} thorough cleansing by an expert HVAC technician ought to treatment the issue of delayed ignition. In fact, you’ll must proceed to schedule routine tune-ups to maintain the issue from taking place once more. 

3. Digital ignition issues

Whereas previous furnaces used standing pilot lights, most furnaces as we speak have an digital ignition system. When combustion fuel accumulates within the chamber, this will trigger a delay in ignition. This leads to the booming sound you might hear. At the moment’s furnaces are outfitted with security mechanisms to forestall this wherein case your furnace gained’t activate in any respect. Usually, the igniter could be changed by your HVAC technician.

What occurs if delayed ignition continues?

Until the difficulty is mounted, the small explosions brought on by delayed ignition are more likely to get greater and larger. Whereas we don’t need to scare our readers, this case is as dangerous because it sounds. You actually don’t need combustion fuel explosions to maintain getting greater in your furnace

The surplus flames brought on by delayed ignition may crack the warmth exchanger which is the most costly element in a furnace. When this occurs, we normally suggest changing the furnace as an alternative of getting a brand new warmth exchanger as a result of a brand new furnace is commonly cheaper. 

Rely on the staff with probably the most expertise. Contact the staff at Sundown Air as we speak for furnace companies in Olympia, WA.

Whether you require installation, repair, or maintenance, our technicians will assist you with top-quality service at any time of the day or night. Take comfort in knowing your indoor air quality is the best it can be with MOE heating & cooling services Ontario's solution for heating, air conditioning, and ventilation that’s cooler than the rest.
Contact us to schedule a visit. Our qualified team of technicians, are always ready to help you and guide you for heating and cooling issues. Weather you want to replace an old furnace or install a brand new air conditioner, we are here to help you. Our main office is at Kitchener but we can service most of Ontario's cities


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