Samsung MXD-U000XN Installation Manual page 30

Ahu control unit (acu)
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Installation
Options
7) Enhanced dehumidification
control
SW2-14
8) Fan delay time during
defrost control and cold
wind prevention control
SW3-19 and 3-20
9) Fan off delay
SW3-21 and 3-22
30 English
Improves dehumidification by improving the cooling performance while
dehumidification signals from the thermostat are received.
When this feature is set to Enable, the thermostat may turn off or on frequently.
A dehumidification effect can be increased by turning on this feature and the overcool
feature of the thermostat simultaneously.
When the fan turns off or on through "cold wind prevention control" and/or "fan stop
control during defrost operation," this feature turns on the fan earlier and turns it off
later than the heat exchanger and heater during the set period of time, to prevent the
heat exchanger or heater from overheating and to remove residual heat in the heater.
If the indoor unit does not have this feature or if the fan is controlled via the G1/G2/G3
terminals, it is recommended that the delay time be set to 10 seconds.
If the indoor unit or thermostat has this feature and you turn on this feature, the set
time is added to the default delay time.
Operates the fan for the set period of time when operation of the indoor unit or
thermostat is stopped, to remove residual heat in the heat exchanger or heater.
If the indoor unit does not have this feature or the fan is controlled via the G1/G2/G3
terminals, it is recommended that the delay time be set to 30 seconds.
If the indoor unit or thermostat has this feature and you turn on this feature, the set
time is added to the default delay time.
Option setting details

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