The Chunlan RF-14WA type air conditioner has an automatic shutdown protection function. Fault symptoms: After turning on, the operation lasts less than 1 minute before the protection indicator light turns on, and the outdoor fan and compressor automatically shut down for protection. After power is cut off and the machine is turned on again, the fault reoccurs. Analysis and inspection: Based on the fault symptoms, checks were conducted on both the indoor and outdoor unit control boards, which were found to be normal. The compressor was forcibly started, and its pressure was measured as normal. It was suspected that there might be a leak in the indoor drainage pipe. Upon checking along the route, it was discovered that the five signal lines connecting the indoor and outdoor units were connected through a connector. Moreover, the wire connectors and the area around the connector were wet. Further investigation revealed that there was a leak at the connection of the drainage pipe.
Article Source: Beijing Chunlan Air Conditioning Repair Phone http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3480078.
Solution: The connector was removed, and the five signal lines were directly connected to the control board. After re-packaging, the connector was suspended away from the drainage pipe. At the same time, the sealing of the drainage pipe joint was strengthened. After confirming everything was in good condition, the fault in the Chunlan air conditioner was resolved.