There may be many kinds of elevator fault codes in orphoot, Tianjin. The following are some common elevator fault codes and their possible reasons:

1.E 1: Door system failure. It may be caused by the damage of the safety switch of the door or the failure of the door control system.

2.E2: Elevator frequency converter failure. It may be caused by the damage of the frequency converter or other abnormal control circuits.

3.E3: Elevator speed limiter failure. It may be caused by the fault or failure of the speed limiter device.

4.E4: The brake of the elevator main engine is out of order. It may be that the brakes have failed or other related components have failed.

5.E5: The main engine of the elevator is faulty. It may be the fault of the host control circuit or other related components.

Please note that I have provided some common fault codes and their possible causes, and the specific situation needs to be judged and analyzed in combination with the specific fault codes and elevator equipment. If you encounter a specific fault code, it is recommended to contact the elevator manufacturer or maintenance unit for detailed troubleshooting and maintenance.