Running the station at 450°C+ for extended periods will significantly shorten the life of the resistive wire. Use the lowest effective temperature for your solder type.
This is the most common culprit. Inside the handle of the hot air gun is a ceramic core wrapped in resistive wire. Over time, these wires can fatigue, crack, or burn out completely, breaking the electrical circuit. 2. Faulty Thermocouple gordak 952 he error portable
Never turn the station off directly using the main power switch while it’s hot. Always turn off the heat dial/button first and let the station run its auto-cooling process until the air turns cold. This prevents the ceramic core from heat-soaking and cracking. Running the station at 450°C+ for extended periods