5
Fan speed
control
1.
The fan operates in one of the four speed modes of “HIGH (HH)”, “MED (H)”,
“LOW (L)” and “AUTO” on the basis of a command issued via the remote
controller. (Concealed duct high static pressure type: HH only)
2.
In AUTO fan speed mode, the air speed changes according to the difference
between T
A
and T
S
.
<Cooling>
HH > H+ > H >
L+ > L > UL
or LL
• Control is identical in remote controller thermo
stat
and body thermo
stat
operation.
Speed modes shown in < > apply to cooling operation under AUTO
air
conditioner operation mode.
• In AUTO fan speed mode, the fan speed remains the same for 3 minutes each
time a speed change occurs.
However, a speed change command issued via the remote controller can
override this, and the fan speed changes accordingly.
• At the beginning of cooling operation, a higher speed (steeper downward
temperature gradient) is chosen.
• As long as the temperature difference remains on a boundary line, the fan speed
stays the same.
<Heating>
Figures inside ( ) applies to remote controller thermo
stat
operation.
Figures outside ( ) applies to body thermo
stat
operation.
Speed modes shown in < > apply to heating operation under AUTO air
conditioner operation mode.
DN code “32”
“0000”: Body
thermo
stat
“0001”: Remote
controller thermo
stat
• In AUTO fan speed mode, the fan speed remains the same for 1 minute each
time a speed change occurs.
However, a speed change command issued via the remote controller can
override this, and the fan speed changes accordingly.
• At the beginning of heating operation, a higher speed (steeper upward
temperature gradient) is chosen.
• As long as the temperature difference remains on a boundary line, the fan speed
stays the same.
• When TC2
60 °C, the fan speed is raised by one step.
TC2: Indoor heat
exchanger sensor
temperature
3.
If the air conditioner goes thermo
stat
OFF during heating operation,
the fan speed
drops down to LL (breeze).
“HEATING
STANDBY
”
displayed
NO.
Item
Specification
s
outline
Remarks
-0.5
Tsc
+0.5
+1.0
+1.5
+2.0
+2.5
+3.0
T
A
(°C)
HH
H
L
L
L
H+
L+
A
B
C
D
E
F
G
<HH>
<HH>
<HH>
<HH>
<H>
<H>
<L+>
+4.0
+3.0
+2.0
+1.0
Tsh
-1.0
Ta (°C)
(+2.0)
(+1.5)
(+1.0)
(+0.5)
(0)
(-0.5)
L
L+
H
H+
HH
E
D
C
B
A
<L+>
<H>
<H+>
<HH>
<HH>
- 49 -