Samsung AC TN4PKC Series Instruction Manual page 35

ETO operation specifications
1 Main indoor unit
– Based on the external contact control settings, the main indoor unit decides whether to generate output when an
error (indoor unit stop) occurs.
– Based on the ETO settings, the main indoor unit decides whether to generate output according to the
temperature and time conditions.
2 Sub indoor unit
– Based on the entrance control settings, the sub indoor unit decides the mode, set temperature, and fan speed
when contact inputs are given.
Enable of ETO
Main indoor unit
Enable of entrance
Sub indoor unit
Enable of external
contact
X X
X O
O X
O O
Enable of external
control contact
X X
X O
O O
Error port output
N/A
Output due to an error
Output by ETO entrance conditions
(temperature / time / error occurrence)
Output by ETO entrance conditions
(temperature / time / error occurrence)
Operation when outputting Main
N/A
On with the previous operation conditions
On with the entrance control enabled
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