There may be several reasons for the malfunction of the remote control of the electric roller shutter door:

電池問題：，您可以確認一下遙控器電池是否正常工作。嘗試更換遙控器電池，確保電池的電量充足，并且正確安裝。

Battery issue: Firstly, you can confirm whether the remote control battery is working properly. Try replacing the remote control battery to ensure that the battery is fully charged and installed correctly.

信號干擾：遙控器的操作信號可能會受到其他電子設備的干擾，比如手機、無線路由器等。嘗試將其他可能產生干擾的設備關機或移開，并測試遙控器是否能夠正常操作。

Signal interference: The operation signal of the remote control may be interfered by other electronic devices, such as mobile phones, wireless routers, etc. Try shutting down or removing other devices that may cause interference, and test whether the remote control can operate normally.

遙控器故障：如果遙控器已經檢查過電池和信號干擾，并且仍然失靈，可能是遙控器本身出現故障。此時，建議您聯系相關廠家或售后服務，以獲取的技術支持和維修指導。

Remote control malfunction: If the remote control has been checked for battery and signal interference and still fails, it may be due to the malfunction of the remote control itself. At this point, it is recommended that you contact the relevant manufacturer or after-sales service center for professional technical support and repair guidance.

門控系統故障：如果您確定遙控器沒有問題，可能是電動卷簾門的門控系統出現了故障。此時，您可以檢查一下門控系統的電源是否正常，是否有其他異常情況，比如線路連接問題、電機故障等。需要修復故障的話，建議您聯系的維修人員來進行維修。

Door control system malfunction: If you are sure there is no problem with the remote control, it may be a malfunction in the door control system of the electric roller shutter door. At this point, you can check whether the power supply of the door control system is normal and whether there are other abnormal situations, such as circuit connection problems, motor faults, etc. If you need to repair the fault, we suggest that you contact professional maintenance personnel for repair.

根據具體情況，您可以逐步排查可能的原因，進行相應的處理。如果問題仍然存在，建議您咨詢的技術人員或售后服務，以獲取更準確的解決方案。

Depending on the specific situation, you can gradually investigate the possible causes and take corresponding measures. If the problem persists, we suggest that you consult professional technical personnel or after-sales service centers to obtain a more accurate solution.