Using this Fisher & Paykel freezer thermostat is straightforward. First, make sure your freezer is unplugged. Then, carefully remove the old thermostat and replace it with this new one. When handling the product, always be careful with the capillary tube. Don't bend it sharply as it can break and cause the thermostat to stop working. For maintenance, keep the thermostat clean. You can use a soft, dry cloth to wipe it down occasionally. If you notice any issues with the temperature control in your freezer, check the thermostat first. If you're unsure about the replacement process, it's best to consult a professional.