Samsung AC Series Install Manual page 56

Dehumidification guide
 If moisture penetrates the LED device, a short circuit in the device may occur in the long term,
resulting in a line-type error.
 In the case of IAC products, dehumidification mode is required if the following conditions are met
due to the characteristics of LED modules and internal device structures.
∙ Where the vacuum packaging is damaged and air is introduced and stored for a long period of time (10 days or more)
∙ Installation environment is out of room temperature 0~40 degrees and humidity 10~80%
∙ Volatile products such as oil paint and thinner are used around the installation site
(Detailed information can be found in 'Product information and installation
- When installing a screen that requires dehumidification, you must follow the method on the next page.
 IAC product dehumidification mode entry method
- Manual: Enter remote control hidden key (page 56), use LSM pattern (page 58)
- Semi Auto : When entering dehumidification mode after factory setting, enter remote control power on key (page 59)
This is something that the customer who runs the
screen should recognize, so please print it out by
the installer and deliver it to the customer (user).
precautions'.)