Remove the indoor unit computer board EJ.

**Haier KFRP-35GW Air Conditioner, Outdoor Unit Starts Intermittently**

**Analysis and Inspection:** Using the self-diagnostic function, it was shown that the 1st and 3rd lights were on, while the 2nd light was flashing. Based on its self-diagnostic display, there was an abnormality in the AC input power supply. However, upon measuring the power voltage with a multimeter, it read 210V, which is within the normal range. Since the user reported that the air conditioner worked normally after the previous repair personnel cleared the self-diagnosis, it was suspected that the indoor unit's computer board might be malfunctioning.

**Repair Method:** The indoor unit's computer board was removed and replaced. Afterward, the entire unit operated normally.

**Warm Reminder:** During repairs, maintenance personnel must conduct a comprehensive analysis and should not rely entirely on the computer's self-diagnostic function. When a fault occurs, the maintenance personnel should analyze the indoor and outdoor units separately and not overlook any potential clues.

**Source Article:** http://blog.sina.com.cn/haixinkt119