**Title: Zhigao Air Conditioner - Normal startup using the operation panel buttons, abnormal remote control startup**
**Fault Phenomenon:** For an air conditioner model KFRd-72LW, after power-on, starting the machine using the operation panel buttons is normal, but starting with the remote control is abnormal.
**Repair Process:** After arriving at the customer's location, I attempted to start the machine using the remote control. The air conditioner's display screen did not show temperature or other content, but the cooling function worked normally. A new display screen was applied for and replaced, but the problem persisted. Then, a computer board was requested and installed, yet the fault remained unresolved. Subsequently, the batteries were removed from the remote control. Following the instructions on the remote control, after 6 minutes, the batteries were reinstalled. Afterward, using the remote control resolved the startup issue.
**Repair Measures:** Resetting the remote control or reinstalling the remote control batteries allows the remote control to operate the machine normally.
**Summary:** The failure rate of the computer board and display screen is very low. Priority should be given to checking the power supply and remote control.
**Source of Article:** http://blog.sina.com.cn/zhigaokongtiaowx