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Series 4 Models: “Wall” Type Top Class R32 Refrigerant AC
∆
T
Running mode
∆
T > 2°C
Cooling
-2°C
≤ ∆
T
≤
2°C
Fan-only
∆
T < -2°C
Heating*
5.6.2 Indoor Fan Control
• When the compressor is on, the indoor fan can be set to
high/medium/low/auto.
• When indoor unit coil temperature is low, the anti-cold air
function will start and indoor fan motor will run
at
low
speed, the speed can’t be changed, when the temperature
is lower than setting value, the indoor fan motor will stop.
• When the indoor temperature reaches the setting tempe-
rature, the compressor will stop, the indoor fan motor will
run
at
the minimum
speed or setting speed. (The anti-cold
air function is valid).
5.6.3 Outdoor Fan Control
• For
264
and
354
models, the outdoor unit will be run
at
different fan speed according
to T4
and compressor ope-
rating frequency.
• For different outdoor units, the fan speeds are different.
5.6.4 Defrosting mode
For 264 and 354 models:
• The unit enters defrosting mode according
to
changes
in
the temperature value of
T3
and
T4
as well as the com-
pressor running time.
•
In
defrosting mode, the compressor continues
to
run, the
indoor and outdoor motor will cease operation, the defrost
light of the indoor unit will turn on, and the “ ” symbol is
displayed.
• If
any one
of the following conditions is satisfied, defro
-
sting ends and the machine switches
to
normal heating
mode:
• T3 rises above TCDE1
°C
.
• T3 maintained above TCDE2°C for 80 seconds.
•
Unit
runs for 15 minutes consecutively
in
defrosting
mode.
5.6.5 Evaporator Temperature Protection
When the evaporator temperature exceeds
a
preset
protection value, the compressor ceases operation.
5.7 Auto-mode
• This mode can be selected with the remote controller
．
•
In
auto mode, the machine selects cooling, heating, or
fan-only mode on the basis of
∆
T (
∆
T =T1-Ts).
(Heating*: In auto mode, cooling only models run the fan.)
• AC will run in auto mode in the below cases:
• Pressing the forced auto button.
• If AC is off,
it
will run
in
auto mode when the timer
on
function is active.
• After setting the mode, AC will run in auto mode if the
compressor keeps not running for certain time.
5.8 Drying mode
• Indoor fan speed is fixed
at
breeze and can’t be chan
-
ged. The louver angle is the same as in cooling mode.
•
In
drying mode, if room temperature is lower than 10°C,
the compressor will stop and
not
resume until room
temperature exceeds 12°C.
• A
ll
protections are active and the same as that
in
cooling
mode.
5.9 Forced operation function
• Forced cooling mode:
The compressor and outdoor fan continue
to
run and the
indoor fan runs
at
low speed. After running for 30 minutes,
the AC will switch
to
auto mode with
a
preset temperature
of 24°C.
• Forced auto mode:
Forced auto mode operates the same as normal auto
mode with a preset temperature of 24°C.
• The unit exits forced operation when
it
receives the fol-
lowing signals:
• Switch on.
• Switch off.
• Timer on.
• Timer off.
• Changes in:
- Mode.
- Fan speed.
- Sleeping mode.
