t1 Mitsubishi 2P cabinet air conditioner, after working for 10 minutes, the outdoor unit shuts down automatically. Repair method b0.

Analysis and Repair: Based on the fault symptoms, it is analyzed as a protective shutdown. The main causes of this type of fault are as follows: 1. Overcurrent and overvoltage protection. 2. Anti-freezing and anti-high temperature protection. 3. High and low pressure protection. First, check that the power supply voltage is normal. Use a clamp meter to measure the operating current, and there is no increase in current when the machine stops. Then check the indoor unit temperature sensor RT1 which reads 3.5kΩ and changes with temperature (normal). Finally, check the resistance of the indoor pipe temperature sensor RT2 which is 60kΩ, and soon reaches 995kΩ after startup, indicating that the sensor is damaged. Mitsubishi 2P cabinet-type air conditioner, the outdoor unit automatically shuts down after working for 10 minutes.

Solution: After replacing the sensor with the same model, the fault was eliminated.

Fault Symptoms: After working for 10 minutes, the outdoor unit automatically shuts down, the airflow delivered indoors decreases, and there is no fault code displayed.

Article Source: Beijing Mitsubishi Air Conditioning Repair Phone http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3760866.