5 Deep Fryer Problems (and the Simple Solutions)

Posted April 3, 2019 by CPS

Deep Fryers are a staple in most commercial kitchens, but it’s not uncommon to experience malfunction every once in a while. That is why it is important to understand some of the most common problems that you might encounter when owning even the highest quality of deep fryers. Although most commercial deep fryers are well known for their durability and efficiency, these heavy-duty kitchen appliances are likely to come across a few minor issues within their lifespan. Luckily, the most common issues that come with a deep fryer are easily fixed and maintained without breaking the bank.

The Pilot Light Is Out.

When the Pilot Light is out, it’s usually a sign that your deep fryer is completely out of commission. Without it, the oil will not heat up to its correct temperature. While there are many reasons that might cause a faulty Pilot Light, the most common culprit is the main gas supply valve. The best way to confirm that this is the problem is to examine the supply line for any noticeable blockage. If the valve is open and clog-free, it may be time to replace the thermopile. The thermopile is the main heating element that converts thermal heat into electric energy, therefore signaling the Pilot Light to ignite a flame. While the thermopile of a deep fryer is fairly simple to replace, it’s best to contact a professional to ensure that the repair is handled correctly.

The Thermostat Is Inconsistent.

There is nothing more frustrating than unpredictable temperature fluctuations when cooking with a deep fryer. When the temperature is off, it’s likely that the deep fryer will continue to burn or undercook your tried and true recipes until the problem is resolved. If you suspect that there is something wrong with the oil’s heating capabilities, carefully place a probe-style thermometer inside the oil to test its average temperature. If the temperature is inconsistent, it might be time for the internal thermostat to be re-calibrated, replaced, or re-wired. If the wires behind the thermostat are disconnected, a technician can easily replace them in one simple trip.

The Hi-Limit Switch Isn’t Working Properly.

Some of the most common problems with deep fryers are caused by faulty hi-limit thermostats, which are mounted inside the fry tank near the burners. Similar to an internal thermostat, a defective hi-limit switch prevents the frying oil from heating to its preferred temperature. If this is the cause of your deep fryer’s inconsistent oil temperature, a service technician can replace the hi-limit switch and resolve the problem.

The Burner Is Out.

Evenly lit burners are the key to perfect frying. If you are noticing that your deep fryer is producing a smaller amount of flames than usual, it could mean that you have a clogged burner. Fortunately, this is an easy fix and usually only requires a quick cleaning to unclog the burners. A long wire brush is a great way to remove unwanted debris that has made its way into the burner cavities over time. If the flames still seem low or uneven, it is likely that an underlying issue is the cause and may require a service technician to inspect the fuel lines for any damages.

There is Poor Oil Circulation.

If the deep fryer’s filtration pump is running correctly, you should be able to hear and see the oil circulation when the fryer is turned on. When the oil filter fails, the flow of the oil will become noticeable weak, making it impossible to successfully deep fry food. Sometimes this only requires a simple oil filter change. Other times, it means that the O-rings might not be fully secure. While still an easy fix, damaged O-rings often interfere with stable air pressure balance and need professionally replaced for complete functionality.