The general incubator displays e 1, which may be the sensor's open circuit, including wires, plugs and sockets. So you should check whether the socket and lead are normal. Fault 1, kettle temperature sensor is damaged (thermistor is broken); 2, the main control IC is bad; 3. The oscillating crystal in the pot is damaged; The corresponding solution to the above problems is: 1. Replace the temperature sensor, with various resistance values around 100K; 2. Replace the main control IC. If there is a program, be sure to contact the manufacturer to buy it; 3. If the linearity of crystal oscillator is damaged, it should be replaced according to the original model, generally 8M crystal oscillator.