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Installation Procedure
[Main]
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.
Main indoor unit
entrance control
Sub indoor unit
20
English
Enable of
Enable of ETO
external contact
X
X
O
O
Enable of
Enable of
external contact
X
X
O
X
O
Output by ETO entrance conditions (temperature
X
/ time / error occurrence)
Output by ETO entrance conditions (temperature
/ time / error occurrence)
O
Ready to control the main contact input
Operation when outputting Main
X
O
On with the previous operation conditions
O
On with the entrance control enabled
[Sub]
Error port output
N/A
Output due to an error
N/A
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