Daikin J Series Service Manual download pdf (Page 51)

Main Functions SiE18-201

40 Main Functions

1.1.5 Washable Grille

Washable grille is for FTK(X)25/35 J

Note: Refer to P97 in Si12-001 for FTK25/35 J Series “Cleaning the air filters.”

1.1.6 Mold Proof Air Filter

For FTK(X)25/35 J

Series

The filter net is treated with mold resisting agent TBZ (harmless, colorless, and odorless). Due

to this treatment, the amount of mold growth is much smaller than that of normal filters.

1.1.7 Pre-Heat Operation (Heat Pump Only)

For FTK(X)25/35 J

Series

1. When the equipment has been stopped, the compressor is warmed up by passing a small

single-phasing current through the compressor motor so that the start up is speeded up.

2. The power consumption during warming up is about 15 to 35W.

3. This function operates only when the outside temperature is low (less than about 10ºC) so

that power saving is achieved.

1.1.8 Hot Start Function (Heat Pump Only)

In order to prevent the cold air blast that normally comes when heating is started, the

temperature of the heat exchanger of the indoor unit is detected, and either the air flow is

stopped or is made very weak thereby carrying out comfortable heating of the room.

*The cold air blast is also prevented using a similar control when the defrosting operation is

started or when the thermostat gets turned ON.

During defrosting or when the thermostat is on in heating mode, the indoor heat exchanger

temperature

≥ 29˚C to fan starts to avoid cold draft.

1.1.9 Program Dry Function

Program dry function removes humidity while preventing the room temperature from lowering.

Since the microcomputer controls both the temperature and air flow volume, the temperature

adjustment and fan adjustment buttons are inoperable in this mode.

In the Case of

Inverter Units

The microcomputer automatically sets the temperature and fan settings. The difference

between the room temperature at startup and the temperature set by the microcomputer is

divided into two zones. Then, the unit operates in the dry mode with an appropriate capacity for

each zone to maintain the temperature and humidity at a comfortable level.

Outside temperature

OFF OFFON

12°C

10°C

(ML045)

Room temperature at

startup

Temperature (ON point)

at which operation starts

Frequency switching

point

Temperature difference

for operation stop

24ºC

Room temperature at

startup

0.5ºC

1.5ºC

18ºC

18ºC 1.0ºC

17ºC

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Daikin J Series Service Manual Page 51

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