General Troubleshooting Steps
Before starting: Check that the operation mode is correctly selected. Follow the recommended order for checking mechanical and electrical parts.
Note: The electromechanical parts are fixed in the support beam. To replace these components, the complete unit has to be loosened and replaced.
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Check Main Control Unit Display
The main control unit is equipped with a two-digit display for error indication.
- Normal Operation: The display shows .
- Blank Display: If all segments are off, check the mains power, power supply cable, or perform a RESET. If the problem remains, replace the main control unit or the power supply.
-
Active Error: The display alternates between an error type (e.g.,
E4) and a specific detail code (e.g.,03). If multiple errors are active, they display in sequence. - LED Indicator: A green LED on the electronic unit indicates status. If off or flashing, the unit may be failing.
Control Interface Key:
- on
- Operation OK
- Up
- To step up in parameter or value menu
- Select
- Enters into parameter or value menu and programs a value into memory
- Down
- To step down in parameter or value menu
- Learn/Exit
- Learn has 3 functions (1: Quick learn, 2: Normal learn, 3: Default setting). Exit jumps out from value/parameter menu without saving.
-
Mechanical Movement Check
Disconnect the mains power and batteries (if fitted). Unlock all mechanical locks.
Pull the door leaf manually and check that the door can be easily moved over the complete sliding track/floor guide.
- Stops/Hard to move: Check for sand, stones, or rubbish in the floor guide.
- Jamming: Check if door leaves jam on the floor or weatherproofing brush strips.
Action: Clean the floor guide, adjust door leaf height/depth, or replace worn parts until the door leaf runs smoothly.
-
Belt Tension Check
If the belt is making noise against the beam or cover, check reliability of belt tension.
Procedure: On the Tension wheel assembly, measure the distance between the adjustment screw and the nut.
- Required Distance: 47 mm
- Slack Check: Remove slack reducers, release the fixing nut in the center of the tension wheel. Check that the distance is 1-2 mm between the nut and the adjacent plate.
Error Codes & Remedies
Follow the tables below to diagnose specific error codes displayed on the main control unit.
Main Error: Power Supply
| Remedy | Reason | Detailed Error |
|---|---|---|
| Check that the power does not drop from the PSU, check cables. | There is not enough power to the MCU. | - - |
| Replace the PSU. | Not enough power. | - - |
Main Error: E1 Sensor Error
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| Make sure that the monitoring output is connected and the connections are OK. | The control unit does not get a test answer from the stop impulse. | 30 (Stop Impulse Error) |
| Make sure that the monitoring output is connected and the connections are OK. Replace the side presence activation unit. |
The control unit does not get a test answer from the activation unit. | 31 (Side Presence Impulse Error) |
| Make sure that the monitoring output is connected and the connections are OK. Replace the presence activation unit. |
The control unit does not get a test answer from the activation unit. | 32 (Presence Impulse Error) |
Main Error: E2 Battery Error
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| Charge or replace the battery. | The battery voltage drops due to low capacity during battery test. | 21 (Battery Error) |
| Replace the main control unit. | The battery voltage measurement is wrong. | 21 (Battery Error) |
| Charge or replace the battery. Make sure cabling is OK. |
Battery disconnected, short-circuited, thermal fuse defective, or charging current out of spec. | 25 (Battery Error) |
| Replace the main control unit. | Internal charging circuit failure. | 25 (Battery Error) |
| Make sure that the door can open to the fully open position. | The door is prevented its battery test within a stated time (high friction/jammed). | 26 (Battery Action Timeout) |
Main Error: E3 Electronic Unit Error
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| RESET. If problem remains, replace electronic unit having flashing/extinguished LED. | Internal RAM memory error. | 00 (RAM Error) |
| RESET. If problem remains, replace electronic unit having flashing/extinguished LED. | Internal ROM memory error. | 01 (ROM Error) |
| RESET. Download Default parameter set. If problem remains, replace main control unit. | Serious internal EEPROM memory error. | 02 (EEPROM Error) |
| RESET. If problem remains, replace main control unit. | Ambient temperature measurement is wrong. | 05 (Ambient Temperature Error) |
| RESET. If problem remains, replace main control unit. | Not possible to activate brake chopper. | 06 (Brake Chopper Error) |
| RESET. If problem remains, replace unit with bad LED. | The internal A/D converter is broken. | 08 (A/D Converter Error) |
| RESET. If problem remains, replace unit with bad LED. | Internal register error. | 10 (Register Error) |
| RESET. If problem remains, replace unit with bad LED. | Internal program error. | 11 (OS Error) |
| Check proper lock installation. If problem remains, replace lock. | The lock is defective. | 14 (Lock Current Error) |
| RESET. If problem remains, replace main control unit. | Not possible to disable motor bridge. | 17 (Hardware Watchdog Error) |
| RESET. If problem remains, replace main control unit. | Internal write EEPROM memory error (impossible to change config). | 18 (EEPROM Critical Write Error) |
| RESET. If problem remains, check connected sensors and 24V accessories. | Output overloaded (MCU TB:6/10/13 or IOU TB:3/4). | 22 (Over Current Error) |
| RESET. If problem remains, replace main control unit. | Not possible to disconnect the lock with the lock relay. | 23 (Lock Circuit Error) |
| Check for high friction/jammed door. Ensure full open/close cycle possible. Make a new Learn. | The Learn cycle has timed out. | 24 (Learn Error) |
| RESET. If problem remains, replace main control unit. | Serious internal programming error. | 33 (Flash Code Error) |
| RESET. If problem remains, replace main control unit. | Test of safety related circuits failing. | 34 (Output Enable Error) |
| RESET. If problem remains, replace main control unit. | The internal link voltage measurement is wrong. | 35 (Link Voltage Error) |
Main Error: E4 Motor / Encoder Error
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| Make sure encoder and motor cables are connected. | Encoder, encoder cable, or motor cable is damaged. | 03 (Encoder Error) |
| Make sure encoder and motor cables are connected. Check for damage. | Motor cable or encoder cable is damaged. | 04 (Motor Current Error) |
| Make sure encoder cable is connected, otherwise replace it. | The encoder cable is damaged. | 09 (Encoder Cable Error) |
Main Error: E5 Lock Error
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| Ensure lock operates without friction. Verify Hold Force and Lock Release parameters. |
Lock or obstruction prevented door from opening first 14mm from closed position. | 07 (Lock Failure) |
Main Error: E6 Communication Error
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| RESET. If problem remains, replace main control unit. | Motor control processor disconnected from internal bus. | 12 (Motor Control Communication Error) |
| RESET. If problem remains, replace main control unit. | Door control processor disconnected from internal bus. | 13 (Door Control Communication Error) |
Main Error: E7 Motor Temperature High
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| If motor is warm, set operation mode OPEN, wait 1 min. Reduce Speeds and increase Hold Open Time. | Duty cycle too high for current Speed/Hold Open settings. | 16 (Motor Temperature High) |
| Set operation mode OPEN, wait 5 min. | Heavy-duty motor is replaced by a normal duty motor. | 16 (Motor Temperature High) |
Main Error: E8 Non-critical Error
| Remedy | Reason | Detailed Error Code |
|---|---|---|
| RESET. If problem remains, replace main control unit (if logging is important). | Cannot write error log/event log to EEPROM. | 49 (EEPROM Non-critical Write Error) |
| Reduce number of events to log in Event Log configuration. | The EEPROM queue is full. Too many events to log. | 50 (EEPROM Access Error) |
Post-Correction Checks
16.1 After remedy or replacement, the operator must be checked as follows:
- Study the door movement and adjust the functions to the values required for a smooth door operation and make sure to comply with local regulations.
- Check that correct functions and values have been selected for the installed accessories and that the installation complies with valid regulations and requirements from the authorities.
- Clean the cover and the doors.
Note! It is not possible to replace an ASSA ABLOY operator component with a component from a different brand.