How to Fix a Slow Cooker Not Heating

Overview

A slow cooker that does not heat can ruin your meal. This guide covers diagnosing and fixing the issue.

Step-by-Step Fix

1. Firstly, ensure the slow cooker's plug is fully inserted into a working wall socket. You can test the socket by plugging in another small appliance, like a lamp, to confirm it has power before proceeding.
2. Next, verify that the thermostat or control knob is set to a heating temperature, such as 'Low' or 'High', and not 'Off' or 'Keep Warm' if the appliance is meant to be actively heating. Double-check any timer settings to ensure the cooker is scheduled to be on.
3. With the slow cooker unplugged for safety, you'll need to use a multimeter set to ohms (resistance) to test the heating element's continuity. Carefully access the heating element wires, usually around the base, and touch the multimeter probes to each terminal; you should see a resistance reading, not an open circuit (OL or infinity).
4. If your multimeter shows no continuity or an open circuit reading for the heating element, it indicates a fault within the element itself. As heating elements are typically integrated and not user-replaceable in slow cookers, the most practical solution is to purchase a new slow cooker.
5. Carefully inspect the thermal fuse, often a small, cylindrical component located near the heating element, usually covered by insulation or a sleeve. Use your multimeter in continuity mode to test across its terminals; if it shows an open circuit, the fuse has blown and will need replacing to restore power.

Common Symptoms & Diagnostic Resolutions

Review the common error codes and operating symptoms below to quickly identify the root cause of the fault before ordering replacement parts.

Frequently Asked Questions