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4. FUNCTIONS

4-1. Operation Functions

 Functions of the main unit controller

 SENSOR DRY

 Automatic operation

1

  OFF 

: • Used to stop the unit when the remote

(Self-diagnostics)     controller is unavailable.
 

 

  • Used when service inspection is performed.

2

  ON 

: • During normal operation: Starts operation 

from the remote controller.

 

 

  • Emergency operation: When the remote 

controller is unavailable, moving this switch 
from the OFF position to the ON position 
starts automatic operation.

3

  TEST 

: • Used when operating performance are 

checked.

 

 

  • Used when pump-down is carried out.

 

 

    (Operates at the rated frequency. At this 

time, the main unit lamp flashes, and the 
remote controller signal cannot be 
received.)

4

  DEMO 

: • This function is for shop displays. Ordinarily 

it is not used.

 

 

  • Used during servicing.

 Operating mode selection

  When automatic operation is selected, the indoor and outdoor 

temperature sensors function, and either HEAT, DRY, or COOL 
mode operation is selected automatically.

  During automatic operation, the system adjusts the room 

temperature and fan speed according to the conditions in the 
room, in order to maintain a comfortable room environment.

SENSOR DRY operation

  •

 

DRY operation is as shown in the figure below.

 PAM-

α

 control

•  In order to further improve inverter performance, control is 

switched between PWM control at low operation speeds, and 
PAM control at high operation speeds, making the most 
effective use of power.

  The compressor operation frequency varies depending on the 

relative humidity.

  The indoor fan operates with 1/f fluctuation.

  The compressor operates at a low operating frequency.
  The indoor fan operates with 1/f fluctuation.

•  Monitoring operation takes place when the room temperature 

is below 15

°

C.

•  When the monitoring range is entered, the compressor stops, 

and the indoor fan operates at LL.

  •

 

If the remote controller is used to start automatic operation, a 
differing-mode check is performed if the operating modes are 
not the same.

 Desired-temperature memory

  •

 

The set temperature in the program can be changed as 
desired within the range of 

±

4

°

C. This temperature can then 

be stored. During automatic operation, press the temperature 
setting buttons to change the temperature.

  •

 

When multiple indoor units are connected and this unit is 
started while another indoor unit is operating, the operating 
mode is as shown in the table below.

Outdoor air temperature

Indoor temperature

DRY A

DRY B

Monitor

Operating mode 

before change

HEAT

HEAT

HEAT

COOL

COOL

DRY

HEAT

HEAT

DRY

DRY

DRY

Multi 

operating mode

Operating mode 

after change

15

°

C

(Approx.)

(Approx.)

22

°

C

22

°

C

20

°

C

18

°

C

27

°

C

27

°

C

24

°

C

Temperature 

at which 

operation 

starts

(Range:

20 – 26

°

C)

COOL

mode

DRY

mode

HEAT
mode

Conditions are monitored at all 
times when the room temperature 
is below 15

°

C.

Set 

temperature 

(standard)

Load

COOL zone

A zone

B zone

12

Содержание 387106972

Страница 1: ...TECHNICAL DATA SERVICE MANUAL INDOOR UNIT DSAF94MR5IA DSAF124MR5IA SPLIT SYSTEM AIR CONDITIONER 0 8180 394 1 09 2006 387106973 DSAF124MR5IA Model No Product Code No DSAF94MR5IA 387106972...

Страница 2: ...w wiring to touch the refrigerant tubing compressor or any moving parts of the fan Do not use multi core cable when wiring the power supply and control lines Use separate cables for each type of line...

Страница 3: ...DATA 10 3 ELECTRICAL DATA 11 3 1 Electric Wiring Diagrams 11 4 FUNCTION 12 4 1 Operation Functions 12 4 2 Protective Functions 14 4 3 Drain Pump and Float Switch 15 5 TROUBLESHOOTING 16 6 CHECKING EL...

Страница 4: ...ions Unit Height mm Width mm Depth mm Package dimensions Unit Height mm Width mm Depth mm Volume m3 Weight Unit Net kg Shipping kg DATA SUBJECT TO CHANGE WITHOUT NOTICE Power level measured at operati...

Страница 5: ...Width mm Depth mm Package dimensions Unit Height mm Width mm Depth mm Volume m3 Weight Unit Net kg Shipping kg DATA SUBJECT TO CHANGE WITHOUT NOTICE Power level measured at operating conditions HIGH s...

Страница 6: ...K GRY 15 GRY VLT 15 WLT RED 30 RED YEL 101 Safety devices Type Operating temp Open C Run capacitor F VAC Heat Exch Coil Coil Rows Fin pitch mm face area m2 DATA SUBJECT TO CHANGE WITHOUT NOTICE Fan sp...

Страница 7: ...15 WLT RED 30 RED YEL 101 Safety devices Type Operating temp Open C Run capacitor F VAC Heat Exch Coil Coil Rows Fin pitch mm face area m2 DATA SUBJECT TO CHANGE WITHOUT NOTICE Fan speeds H M L measur...

Страница 8: ...AC 230 V 50 60 Hz 13 7 V 0 4 A 5 48 VA Primary WHT WHT 307 10 Secondary BRN BRN 1 8 10 150 C DTN C583G3U TKS121B 0 C 188 0 4 DTN C502H3T TKS128B 25 C 5 0 3 C7 M3 SY 25 C 60 RH 5 RH 31 0 BI 1300 2725 2...

Страница 9: ...the disconnected fan motor sockets in step 2 as shown in the Figure 5 Place the cable neatly in the box and reinstall the cover plate NOTE HH Using the booster cable H At shipment How to read the diag...

Страница 10: ...2 DIMENSIONAL DATA Units mm 10...

Страница 11: ...3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 11...

Страница 12: ...t low operation speeds and PAM control at high operation speeds making the most effective use of power The compressor operation frequency varies depending on the relative humidity The indoor fan opera...

Страница 13: ...temperature either 60 minutes prior or 30 minutes prior to the set ON timer time and operation is started in advance of the set ON time The indoor fan speed is Medium COOL Indoor temperature Set temp...

Страница 14: ...tops Once the freeze condition is detected the air conditioner will work less than the maximum frequency until it is turned off Approx 53 Normal operation At start of operation A High LL Stopped A B C...

Страница 15: ...4 3 Drain Pump and Float Switch...

Страница 16: ......

Страница 17: ...ion switch Ordinarily be sure this is always set to NORMAL The DEMO position is used for inspections and similar maintenance 1 Turn the power switch ON 2 Move the operation selector on the remote cont...

Страница 18: ...ostics contents Control 1 Control 2 Initial self Short circuit terminals 2 and 4 on Short circuit terminals 2 and 3 on Probable location of malfunction diagnostics the indoor unit terminal plate the o...

Страница 19: ...MO and start operation using the remote controller If there are no problems with the above then check the outdoor unit 1 The rated voltage must be present between inter unit cables 1 and 2 Connect a 5...

Страница 20: ...tance from the noise source 1 Use shielded wires 2 Move unit away from the noise source Trouble Either of the following trouble may occur 1 The unit may stop suddenly during operation 2 Indicator lamp...

Страница 21: ...sure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 6 1 4 Measurement of Insulation Resistance...

Страница 22: ...n place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value The capacitor is good i...

Страница 23: ...R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728...

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