Cause : PTC Thermistor comes when the PTC is not working or the thermistor is not functioning as intended. PTC thermistors are temperature-sensitive resistors that increase their resistance with an increase in temperature. They are commonly used for temperature sensing, overcurrent protection, and inrush current limiting in various electronic circuits and devices.

• If testing confirms that the PTC thermistor is indeed faulty and cannot be repaired, replace it with a new one. Ensure that the replacement thermistor has the correct specifications and is compatible with the application.