Using this Sharp fridge light and fan switch is easy. Just connect it to the appropriate terminals in your fridge using the three 2.8mm spade connections. Make sure to turn off the power to the fridge before installation. When using the switch, simply press the buttons to turn the light or fan on and off. As for maintenance, keep the switch clean by gently wiping it with a dry cloth. Avoid using any harsh chemicals or abrasive materials as they may damage the switch. If you notice any issues with the switch, like it not turning on or off properly, check the connections first. If the problem persists, contact us for further assistance. And always remember, if you're unsure about anything, don't hesitate to reach out with your fridge model number for help.