Why My Fryer No Longer Starts?

Aug 07, 2023, 12:32pm

If your fryer no longer starts, it may be that the lid is closed but the appliance does not start or the LCD screen does not display anything.

If your fryer won’t start with the lid in good condition and securely closed, try these steps:

  • Check the condition of your socket;
  • Test the cord of your fryer: the handling will be different if your cord is removable or integrated into the appliance;
  • Check the status of your switch if your fryer is equipped with one;
  • Check your electronic card and replace the wires or the card depending on their condition.
  • Test the fryer blade motor

If the LCD screen of your fryer does not display anything or is damaged, you will need to test the batteries and possibly replace the timer.

From fast food establishments to home kitchens, deep fryers have become an indispensable part of culinary explorations. They provide an easy and quick way to cook some of our favorite meals, from French fries to fried chicken. However, it can be quite frustrating when you’re ready to start cooking, and your fryer refuses to start. Let’s delve into understanding why your fryer might not be starting and the possible solutions.

Why My Fryer No Longer Starts?

Power Connection Issues

The first thing to check is whether the fryer is properly plugged into the power source. A loose or broken connection can prevent the appliance from receiving electricity, hindering its functionality. Ensure the power cord and plug are in good condition and firmly connected. If your fryer still doesn’t start, you might want to test the outlet with another appliance to rule out the possibility of the problem being with the power supply itself.

Tripped Circuit Breaker

If your fryer is connected properly and the outlet works, but your fryer still refuses to start, it’s time to check your circuit breaker or fuse box. A power surge can cause the circuit breaker to trip or the fuse to blow, cutting off power to your appliance. Reset the circuit breaker or replace the fuse and try starting your fryer again.

Faulty Internal Components

Deep fryers are complex machines with many internal components. The failure of any one of these components could lead to the fryer not starting. This could be a thermostat issue, a problem with the heating element, or a malfunctioning control board.

A faulty thermostat might not be able to sense the correct temperature, thus failing to signal the fryer to start. Similarly, a defective heating element will prevent the fryer from reaching the required temperature. If you suspect that these components might be the issue, it’s advisable to contact a professional to inspect and replace them as necessary.

The control board is essentially the brain of your fryer; if it fails, the entire system may not function. Unfortunately, a defective control board often needs to be replaced rather than repaired, which may need the help of a professional appliance repair service.

Safety Mechanisms

Safety mechanisms are put in place to prevent accidents. If your fryer’s safety system perceives an anomaly (like an excessively high temperature), it might automatically shut down the appliance. While this feature is essential for your safety, it can also lead to the fryer refusing to start if the safety system malfunctions.

In most cases, fryers have a reset button, usually located at the back or bottom of the appliance, which resets the safety feature. Refer to your user manual to locate the button, and follow the instructions to reset the safety system. If this doesn’t solve the issue, contact a professional as your safety mechanism might be faulty.

Old Age and Wear and Tear

Like all appliances, deep fryers have a lifespan. If your fryer is old and has seen its fair share of usage, it might simply be reaching the end of its life. Regular maintenance can prolong a fryer’s lifespan, but eventually, components will wear down and need replacing, or the entire unit might need to be retired.

If you’ve checked everything and your fryer still won’t start, it might be time to consider investing in a new one. With advancements in technology, modern deep fryers offer improved energy efficiency, better temperature control, and enhanced safety features, making this a potentially worthwhile investment.


The vane motor powers a vane that spins your food. It is located under the fryer after removing the cover of the appliance.

  • Check its value by placing each multimeter probe on each metal terminal of your engine.
  • If you get a numeric value other than 1 or OL, your engine is good.

To check if current is flowing through the wire that powers the blade motor:

  • Set the multimeter to continuous mode (indicated by the sound wave icon) or to the low value of ohmmeter mode (indicated by the omega Ω symbol).
  • Place the multimeter tips on each end of the wire: at the beginning and at the end.

If your multimeter displays a numerical value other than 1 or OL, beeps, or emits some kind of signal, your wire is live and therefore good. If this test does not change the value displayed on the multimeter (1 or OL), your wire is bad. Therefore, it will have to be replaced.

Unfortunately, this test alone will not be enough to determine if your card is at fault. Therefore, you will have to perform this test again on other parts of your fryer: for example, on the resistance, on your switch, etc. using the same measurement method.

  • If you notice that one of the wires is not passing current between your component and the electronic card, you need to replace the wire.
  • If, after your tests, you notice that your wires are OK, but your device does not turn on, you will have to replace the electronic board.

Why My Fryer No Longer Starts?


If the LCD does not show anything and you can program the cooking settings on the fryer, your circuit board may be at fault.

If you are unable to program the cooking parameters, you will need to check the timer battery.

  • Depending on the fryer model, you may not be able to access your screen directly. Therefore, you will have to dismantle all the parts that will lead you to it. For example, an electrical box, hinges that separate the tanks from the lid, and various protections.
  • Remove the battery and read the instructions for it. If the battery voltage is not visible, look for its link on the Internet.
  • Set the multimeter to a DC value higher than your battery voltage (in this case, the multimeter was set to 20 volts).
  • Place two multimeter probes on both sides of the battery. If you get a reading close to what’s listed on your battery, it’s good, otherwise it’s dead or worn out. Therefore, it will have to be replaced.


Troubleshooting an unresponsive deep fryer can be a frustrating task. But understanding the common reasons why your fryer may not start is the first step in resolving the issue. Remember, while some problems can be fixed with a quick DIY solution, others might need professional assistance. Don’t hesitate to call a service professional if you’re unsure, as tinkering with electrical appliances can be dangerous. Safety should always be your first priority.