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General Functionality
Si04-115
26
Main Function
1.7
Fan Speed Control for Indoor Units
Control mode
The airflow rate can be automatically controlled depending on the difference between the set
temperature and the room temperature. This is done through phase control and Hall IC control.
For more information about Hall IC, refer to ‘Hall IC check (A6)’ on page 68.
Phase steps
Phase control and fan speed control contains 8 steps: LLL, LL, L, ML, M, HM, H and HH.
= Within this range the airflow rate is automatically controlled when the AIRFLOW
ADJUSTING button is set to AUTOMATIC
Refer to automatic airflow rate control on page 26.
Note:
1. During powerful operation, fan operate H tap + 50 - 70 rpm.
2. Fan stops during defrost operation.
Automatic air
flow control for
heating
The following drawing explains the principle for fan speed control for heating:
Note:
When there is no operation and the night set mode turns on, the step is low. Refer to “Night set
mode” on page 29.
Automatic air
flow control for
cooling
The following drawing explains the principle of fan speed control for cooling:
Step
Cooling
Heating
Dry mode
LLL (Heating thermostat
OFF)
J type : 800 - 980 rpm
(During powerful operation :
1050 rpm)
LL
L
ML
M
MH
H
HH (Powerful)
(R1906)
(R1906)
-1.5˚C
-0.5˚C
-1˚C
-2˚C
L
ML
M
Thermostat
setting
temperature
Phase control
Temperature difference between
ambient and set temperature
fan speed
(R1908)
+1.5˚C
+0.5˚C
+2˚C
+1˚C
M
ML
L
fan speed
Temperature difference between
ambient and set temperature
Phase control
Thermostat
setting
temperature
(R1909)
Содержание FTK25JV1NB9
Страница 10: ...Si04 115 List of Function 1 Part 1 List of Function 1 Functions 2 1 1 Indoor Unit and Outdoor Unit 2...
Страница 50: ...Si04 115 System Configuration 41 Part 5 System Configuration 1 Instruction 42 1 1 FTK25 35J FTX25 35J 42...
Страница 69: ...Instruction Si04 115 60 System Configuration...
Страница 134: ...Si04 115 For RK25J RK35J RX25J RX35J Removal Procedure 125 2 Slide the MID upward and release Step Procedure Points...
Страница 136: ...Si04 115 For RK25J RK35J RX25J RX35J Removal Procedure 127 4 Remove the fan motor Step Procedure Points...
Страница 145: ...For RK25J RK35J RX25J RX35J Si04 115 136 Removal Procedure...
Страница 146: ...Si04 115 Others 137 Part 8 Others 1 Others 138 1 1 Explanation 138...