Daikin F-Series, Руководство по обслуживанию

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SiBE12-713 Main Functions
Function and Control 65
1.4 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 the troubleshooting for fan motor on page 239.
Phase Steps Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H and HH.
In automatic operation, the step “SL” is not available.
= Within this range the airflow rate is automatically controlled when the FAN setting
button is set to automatic.
Note: 1. Fan stops during defrost operation.
2. In time of thermostat OFF, the fan rotates at the following speed.
Cooling : The fan keeps rotating at the set tap.
Heating : The fan stops.
Automatic Air
Flow Control for
Heating On heating mode, the indoor fan speed will be regulated according to the indoor heat exchanger
temperature and the difference between the room temperature and the required set point.
Automatic Air
Flow Control for
Cooling The following drawing explains the principle of fan speed control for cooling:
FTXG25/35E
CTXG50E
FVXS25-50F FTK(X)S50-71E
FTK(X)S71B FTK(X)S20-50D
FTK(X)S20-35CA
FDK(X)S25-35EA
FDK(X)S25-35CA
FDK(X)S50-60C
FLK(X)S25-60BA
Step Cooling Heating Cooling Heating Cooling Heating
LLL
LL
L
ML
M
MH
H
HH (Powerful) H+70 (FTXG25/35E)
H+50 (CTXG50E)
H+40 (FVXS25-50F)
H+50 (FTXG25/35E,
CTXG50E)
H+40 (FVXS25-50F) H+90 H+90 H+50 H+50
(R6035)
(R6036)
(R6037)
(R6036)
(R6037)
(R6036)
+1.5˚C
+0.5˚C
+2˚C
+1˚C
M
ML
L
fan speed
Difference between room
and set temperature
Thermostat
setting
temperature
(R4594)
DC motor: Rotation speed control
AC motor: Phase control