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Installation Procedure
Step 14 optional : Setting the Emergency Temperature Output (ETO) function
Emergency Temperature Output (ETO) function (for the multi system, this function is not supported.)
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 75 °F (24
°C) Auto mode.]
– To set more detailed operation conditions for the indoor unit 2, use the S-net Pro.
Setting up the ETO
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
– (Reαuired) 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.
Communication between
indoor and outdoor units
(F1 and F2)
External contact
interface module
MIM-B14
Error output port
(1, 2)
Contact input port
(5, 6)
Main indoor unit
Sub indoor unit
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