Aht paris User manual

That unit is only available in South Africa. Contact Aiwa in Japan. I have also searched hard for it, as as you say, nothing online.

https://shopping4africa.com/products/aiwa-tall-boy-aht-5100bt

https://www.google.com/search?q=Aiwa+AHT-5100BT+manual

.za website
https://www.int-aiwa.com/global_deatil.php?id=131

..

no a car or truck at all bu is a

AHT Cooling Systems GmbH

Multi-mode commercial refrigeration
equipment

Simple th E means error That e20 then mean error 20 which mean timing will need to be restet .check on the timing bello or beside the display start reduce the timing and the problem solve.

Unit specific manuals need to be ordered from customer support at the manufacturer.

Here is a the manual in PDF form...http://www.natlallergy.com/images/art/Pari-Trek-S.pdf

The MX 5000 and diNovo Media Laser utilize the Adjust Time/Date function on your PC's clock to set the keyboard's LCD display. In order for the PC's clock to synchronize with the LCD display, the SetPoint for Bluetooth software is required to be installed and enabled. Once you have installed SetPoint for Bluetooth, the LCD display will automatically sync with the system's clock.
Solution
If your LCD is not displaying the date and time and SetPoint for Bluetooth is not installed:

1. Download the latest version of SetPoint for your device from the Logitech Downloads page.
   
2. Install SetPoint on your system. (For additional information regarding installing SetPoint for Bluetooth, please refer to Knowledge Base article 5890 ).

Pretty sure you gotta download the Windows Installer Cleanup Utility and delete any of the settings you might have for khal, could also try to delete everything to do with Setpoint. Finally do a clean install and see what happens.