Fan Speed Control For Indoor Units - Daikin G-Series Service Manual

SiBE12-933_A
1.5

Fan Speed Control for Indoor Units

Control Mode Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH.
The airflow rate can be automatically controlled depending on the difference between the room
thermistor temperature and the target 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 177.
Fan Speed Steps In automatic fan speed operation, the step "SL" is not available.
LLL
LL
L
ML
M
MH
H
HH
(POWERFUL)
Note: 1. Fan stops during defrost operation.
2. In time of thermostat OFF, the fan rotates at the following speed.
In case of ATX20-35G
LLL (Heating thermostat OFF)
LL
L
ML
M
MH
H
HH (POWERFUL)
Note: 1. During POWERFUL operation, fan operate H tap + 80 rpm.
2. Fan stops during defrost operation.
3. The airconditioner does not operate with MH tap from a start of the auto fan speed operation
Function and Control
F(A)TXS20-50G
F(C)(A)TXG25-50E
FVXS25-50F
Step Cooling
(R11681)
H+70
(FTXG25/35E,
ATXG25/35E)
H+50
(FTXS20-50G,
ATXS20-50G,
ATXG50E,
CTXG50E)
H+40
(FVXS25-50F)
= The airflow rate is automatically controlled within this range when the FAN setting
button is set to automatic.
Cooling : The fan keeps rotating at the set tap.
Heating : The fan keeps rotating at LLL tap (FTXS, ATXS and FVXS series) or stops (the other
models).
Step
= The airflow rate is automatically controlled within this range when the FAN setting
button is set to automatic.
for about 30 minutes.
FDK(X)S25-35EA
FDK(X)S50C
FLK(X)S25-50BA
Heating
(R6834)
H+50
(FTXS20-50G,
ATXS20-50G,
FTXG25/35E,
ATXG25-50E,
CTXG50E)
H+40
(FVXS25-50F)
Cooling Heating
(During POWERFUL
operation: L+80rpm)
(R14045)
(R14044)
Main Functions
Cooling Heating
(R6833) (R6834)
H+50 H+50
Dry Mode
L tap
61