Samsung AC RNJDKG Series Installation Manual page 20

Installation Procedure
Emergency Temperature Output (ETO) function
CAUTION
• In order to deploy the ETO function, the MIM-B14, an external contact interface module, must be installed in each
indoor unit.
– The ETO is a concept of emergency operation of indoor units. If the indoor unit 1 (main indoor unit) stops because
of an error, the indoor unit 2 (sub indoor unit) starts to operate.
– Basically, the indoor unit 2 operates in the previous mode. [For the first time operation, it starts in 24 °C (75 °F)
Auto mode.]
– To set more detailed operation conditions for the indoor unit 2, use the S-net Pro.
Setting up the ETO
Communication between
indoor and outdoor units
(F1 and F2)
1 Main indoor unit
– Disable the external contact control (Default).
– Connect the S-net pro2 to F1 and F2.
– Enable the ETO function and set the temperature and time.
2 Sub indoor unit
– (Required) Enable the external contact control (with the installation option SEG14 - Reverse Control).
– Connect the S-net pro2 to F1 and F2.
– Enable the entrance control and set the mode, set temperature, and fan speed.
20
English
Main indoor unit
Sub indoor unit
Error output port (1, 2)
External contact
interface module
MIM-B14
Contact input port (5, 6)