Fault Phenomenon: After running in heating mode for 5 minutes, the air conditioner automatically shuts down for protection. The operation indicator light flashes, and pressing any function on the remote control has no response. Beijing Zhigao Air Conditioner Repair. Zhigao Air Conditioner, automatic shutdown after running in heating mode for 5 minutes.
Analysis and Maintenance: Preliminarily judged that there is a fault in the control circuit. First, check the outdoor unit pipe temperature sensor T3, measure its resistance can change with the change of temperature, and the change range is large (normal). Then check the indoor temperature sensor T2, measure its resistance to be 1.27kΩ (normally, it should be 10kΩ under normal temperature conditions), and its temperature change range is small. Remove this temperature sensor and install it on a normal machine of the same model for testing, and the same fault appears, thus judging that the pipe temperature sensor is damaged.
Article Source: Beijing Zhigao Air Conditioner Repair Phone http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3482552.
Solution: After replacing the indoor unit temperature sensor, the fault was eliminated.