Fan Speed Control For Indoor Units - Daikin FTK25JV1NB Manual

Si-86.book Page 19 Friday, June 23, 2000 10:26 AM
SIE-86
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 61.
Phase steps Phase control and fan speed control contains 8 steps: LLL, LL, L, ML, M, HM, H and HH.
LLL (Heating thermostat OFF)
LL (Cooling thermostat OFF)
L
ML
M
MH
H
HH (Powerful)
Refer to automatic airflow rate control on page 19.
Note: 1. During powerful operation, fan operate H tap + 50 - 70 rpm.
2. Fan stops during defrost operation.
Automatic air flow The following drawing explains the principle for fan speed control for heating:
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 22.
Automatic air flow The following drawing explains the principle of fan speed control for cooling:
control for cooling
Main Function
Step Cooling
(RL010)
= Within this range the airflow rate is automatically controlled when the AIRFLOW ADJUSTING
button is set to AUTOMATIC
Thermostat
Phase control
setting
temperature
-0.5˚C
-1.5˚C
fan speed
fan speed
+1.5˚C
+0.5˚C
Thermostat
setting
Phase control
temperature
General Functionality
Heating Dry mode
H type : 500 - 860 rpm
(During powerful operation :
850 - 910 rpm)
J type : 800 - 980 rpm
(During powerful operation :
1050 rpm)
(RL010)
L
-1˚C
Temperature difference between
ML
ambient and set temperature
-2˚C
M
M
+2˚C Temperature difference between
ML
ambient and set temperature
+1˚C
L
(RL013)
(RL012)
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