Daikin FTKS50BVMB, Service Manual

Page: 156 / 456

SiEN18-622 Indoor Unit (SkyAir Models)
Function 143
Non-operating
Room Dew
Prevention Fan
Control
[Overview]
After operating an indoor unit for the own room in the cooling mode or dry mode, stop the unit
using the remote control. Under the condition, when an unit for another room is started
operation in the heating mode, the fan in the own room may rotate in the LL mode even though
the remote control of the fan is in stop mode.
[Purpose]
On multiple units, when units of other rooms start heating operation after unit of the own room
starts cooling or dry operation, high-temperature refrigerant flows to the unit of the own room,
thus resulting in evaporation of condensate retained in heat exchanger or drain pan. At this
time, if casing temperature is below dew point, dew gets condensed. In order to prevent the dew
condensation, this control is used to operate the fan for a specified period of time, thus
discharging the moisture from the indoor unit.
[Outline]
•
The fan rotates in LL mode even though the unit is turned off by the use of remote control.
• This control can be reset only by conducting the cooling or dry operation of the unit of the
own room with thermostat ON.
• This control is enabled within 8 hours after the “Outdoor unit operation mode” has changed
from cooling or dry operation to heating operation.
• During the 8 hours, this control is activated for a cumulative period of 40 minutes.
„
Emergency operation is not conducted.
The outdoor unit has no emergency function. Therefore, in the case of connecting to Split or
Split Multi outdoor unit, only the fan operation is conducted even though the dip switch of indoor
unit is set to EMERGENCY.