An LG Oven Losing Temperature During Cooking in Jefferson Park, Chicago

An LG Oven That Could Not Hold Its Heat in Jefferson Park, Chicago

A homeowner in the Jefferson Park area of Chicago called A+ Appliance Repair and Maintenance about an LG oven with a specific complaint: it heated up, but over the cooking time the temperature kept decreasing, causing longer and longer cook times, and when they tried to raise the temperature, it had to preheat all over again. That precise pattern, an oven that gets hot but cannot maintain it, points at a particular and common gas oven failure.

Why an oven loses temperature this way

An oven does not just heat once and stay hot. It cycles, re-lighting the gas periodically to maintain the temperature you set. On a gas oven, that re-lighting depends on the igniter, which does two jobs: it provides the heat to light the gas, and it acts as the electrical gatekeeper that lets the gas valve open, which happens only when enough current flows through the igniter.

As an igniter weakens with age, it can still light the gas on a strong cold start, so the oven heats up initially. But as it cycles and conditions shift, a weakening igniter may no longer draw enough current to reliably open the valve each time the oven calls for more heat. So the oven gradually loses temperature over the cooking time, because it is not successfully re-lighting to maintain the heat. And when you raise the setting, it has to start over and preheat, because it is struggling to hold heat at all. That is exactly the behavior this customer described, and it is a classic sign of an igniter that is on its way out.

The repair

Our technician traced the fault to the oven igniter and replaced it. A weakening igniter cannot be judged by eye, since it often still glows, so the proper evaluation is electrical, measuring what the circuit draws against what the valve needs. With a new, strong igniter in place, the oven could reliably re-light and maintain its temperature through the cooking time rather than gradually losing it. Our technician confirmed the oven reached and held its setpoint through a test cycle, verifying the repair under real operation. On a losing-temperature complaint, confirming the oven maintains its heat is the measure of a completed repair.

The warning sign to watch for

This kind of failure gives you notice. An oven that takes longer to cook than it used to, that loses temperature during cooking, or that seems to have to preheat repeatedly is often telling you the igniter is weakening. The same is true of an oven that is slow to light from a cold start. Catching it at that stage makes for a scheduled igniter replacement rather than an oven that finally fails to light in the middle of a meal. If your oven has started cooking unevenly or taking longer, it is worth having the igniter checked.

About A+ Appliance Repair and Maintenance

We service LG, Whirlpool, Samsung, Maytag, KitchenAid, GE, and every other major oven and range brand throughout Jefferson Park, Portage Park, and the surrounding Chicago neighborhoods. We carry common parts, including igniters, so a repair like this can usually be done in a single visit.

We quote the price upfront before any work begins, we waive the service call fee when you move forward with the repair, and every completed repair is backed by our full repair warranty. If your oven is losing temperature during cooking or taking longer than it should, we can restore steady, reliable heat.