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ERR2, ERR3, ERR4 Controller not get connected with Programmer. Re-start power to check again. Need to replace controller or programmer if still not work.  Mismatched versions of controllers and hand programmer can also cause errors. It is recommended to replace them with the latest version to resolve the issue. The door stay open not auto close Open direction is wrong. Power off, then manually open the door in half open, then power on, if the door come close first, the open direction is correct. If the door come open first, need to change open direction by hand programmer in F2...

Chinentech Industrial Limited is a professional automatic doors manufacturer in China, engaged indesign, production, sales and installation of automatic door systems. Since 1992, We have become one of the leading automatic doors manufacturers in China. We provide high-quality automatic entrance systems for all kinds of buildings, such as offices, shopping malls, hospitals, hotels, restaurants, retail business, etc. We also supply complete access control systems for keeping your door system more safe. Types of automatic doors: Automatic sliding doors, Automatic swing doors, Automatic hospital doors, Sliding gate openers, Swing gate openers, Automatic Windows, Electric Curtain/Blinds, etc. All our automatic doors meet the...