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21
Auto Fan Action in HEATING Mode
a
b
c
d
T1
e
Fig. 23 – Auto Fan Action in HEATING Mode
DEFROST Mode
The air conditioner enters the DEFROST mode according to the
T3 temperature value and the T3 temperature change value range
plus the compressor running time.
During the DEFROST mode, the compressor continues to runs,
the indoor and outdoor motors stop, and the indoor unit defrost
lamp illuminates and
appears.
If any one of the following items is satisfied, the defrosting finishes
and the machine reverts to the normal heating mode.
−−−−T3 rises to be higher than TCDE1_C.
−−−−T3 keeps to be higher than TCDE2_C for 80 seconds.
−−−−The machine has run for 15 minutes in defrosting mode.
Evaporator Coil Temperature Protection
TEstop
T2
Resume
Off
Decrease
TEdown
TEH2
Hold
Fig. 24 – Evaporator Coil Temperature Protection
NOTE: The following applies to Fig. 24:
S Off: Compressor stops
S Decrease: Decrease the running frequency to the lower level
S Hold: Keep the current frequency
S Resume: No limitation for frequency
When the evaporator temperature is higher than the setting
protection value, the compressor stops.
Auto−Mode
This mode can be chosen with the remote controller and the setting
temperature can be changed between 62.6_F(17_C)~86_F(30_C).
In the AUTO mode, the machine chooses the COOLING,
HEATING or FAN−ONLY mode according to ΔT (ΔT =T1−Ts).
Table 13—Auto Mode
ΔT=T1-Ts
Running mode
ΔT＞2_C
Cooling
-2≤ΔT≤2_C
Fan-only
ΔT<-2_C
Heating
The indoor fan runs under auto fan in the relevant mode. The louver
operates the same in the relevant mode. If the machine switches modes
between HEATING and COOLING, the compressor stops for 15
minutes and then chooses the mode according to T1−Ts. If the setting
temperature is modified, the machine chooses the running function
again.
DRY mode
Indoor fan speed is fixed at breeze and can not be changed.
The louver angle is the same as in the cooling mode.
Low indoor room temperature protection
In the DRYING mode, if the room temperature is lower than 50_F
(10_C), the compressor stops and does not resume until the room
temperature exceeds 53.6_F (12_C).
Evaporator anti*freezing protection, condenser high temperature
protection and outdoor unit frequency limit are active and are the
same as that in the cooling mode. The outdoor fan operates the
same as in cooling mode.
Forced Operation Function
S Enter forced operation function: When the machine is
off, press Touch to engage the the Forced Auto Mode.
Press Touch again, within 5 seconds, to engage the
Forced Cooling Mode. In Forced Auto, forced cooling
or any other operation mode, press the touch button to
turn off the unit. In the forced operation mode, all
general protections and remote control are available.
Operation rules:
S Forced Cooling Mode: The compressor runs at the F2
frequency and the indoor fan runs as a breeze. After
running for 30 minutes, the unit enters the auto mode as
75.2_F (24_C) setting temperature.
S Forced Auto Mode: The forced auto mode is the same
as the normal auto mode with a 75.2_F (24_C) setting
temperature.
AUTO−RESTART Function
The indoor unit is equipped with the AUTO−RESTART
function, which is carried out through an auto−restart module. In
the event of a sudden power failure, the module memorizes the
setting conditions prior to the power failure. The unit resumes the
previous operation setting (not including the SWING function)
automatically three (3) minutes after the power returns.
If the memorization condition is the FORCED COOLING mode,
the unit will run in the COOLING mode for 30 minutes and turn
to the AUTO mode at the 75.2_F(24_C) setting temperature.
If the air conditioner is off before the power turns off and the air
conditioner is required to start up, the compressor delays start up
for 1 minute before powering on. In other instances, the
compressor waits three (3) minutes before restarts.
Refrigerant Leak Detection
With this new technology, the display area displays “EC” when the
outdoor unit detects a refrigerant leak. This function is only active in
cooling mode. It can better prevent the compressor being damaged by
refrigerant leakage or compressor overload.
Open Condition: When the compressor is active, the value of the Coil
temperature of evaporator T2 has no change or very little change.
46
_F (8_C) Heating
When the compressor is running, the indoor fan motor runs
without the ANTI−COLD air function. When the compressor is
off, the indoor fan motor is off.
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