17
WN 059666 45532 - 07/2023
ES 250 PRO/ES 250 PRO FST
ES 400 PRO/ES 400 PRO FST
Operating instructions
6 Troubleshooting
Malfunctions can have many causes.
As the cause often lies in the ambient conditions, the operator attempts to detect
the ambient conditions and react to them accordingly. This involves the operator
interrupting the current function and starting again after a waiting time or a new
activation. If this does not work, the automatic operator function switches off and
an error message is output.
The display is an LED on the operating mode switch.
The display flashes or shows a continuous light and indicates a malfunction that
must be rectified by dormakaba Service.
To reset error messages, switch the operating mode switch to the OFF position.
Before acknowledging an error message, cause analysis and removal shall always
take place.
6.1 Influence of weather conditions
The safety sensors on the door unit protect the passage area. Personal protection
takes top priority when setting the sensitivity of the sensors.
Weather factors such as rain or snow, flying foliage or sunlight on reflective
flooring can cause the sensors to make false detections.
False detections can result in the door opening for up to 1 minute. This opening of
the door unit is stipulated in a standard and is intended solely to protect door
users.
6.2 Error location
If faults occur during operation, check the following:
• Is the power supply available?
• Is the optional emergency stop switch released?
• Is the optional emergency open switch released?
• Is the operating mode switch in the correct position?
• Are objects blocking the door?
• Are the door leaves smooth-running?
If these items are all OK and the door unit is still not functioning, notify dormakaba
Service.
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