10
7.1.2.2.2 Protection Function
Antifreezing protection
If the anti-freezing protection is detected, compressor,outdoor fan stop to run, indoor fan runs at low fan speed; When anti-
freezing is eliminated and compressor had stopped 3mins, the whole unit will back to original running state. When it isfit for the dry
mode running for 6mins and stop running for 4mins, and system anti-freezing protection is detected, thatthe compressor, outdoor
fan stop running, indoor fan runs at low fan speed, when anti-freezing is eleminated and compressorhad stopped for 4mins, that
will back to original running status.
7.1.2.3 Heating Model
7.1.2.3.1
Heating Running Condition and procedures
If T
amb
T
set
+2
, Heating mode will act, compressor, outdoor fan and 4-way valve will run, but indoor fan will run after 3minutes
delay.
If Tset+2
T amb
T set +4
, the unit will keep running in the original mode. In this mode, the 4-way valve will be powered on,
the setting temp. range:16
~30
.
If Tamb>Tset+4
, compressor , outdoor fan stop running, the 4-wayvalve is power on, indoor fan will stop after 60s
In this mode, the 4-way valve will be powered on, the setting temp. range:16 ~30
.
When T
amb
T
set
-2
, compressor outdoor/indoorfan will stop.
In this mode, the 4-way valve won’t power on, the temperature range is 16
~30
.
7.1.2.3.2 Defrosting Condition and procedures
If frost is detected with the condenser, the system enters defrost mode.In this case, the compressor goes on running, outer fan,
4-way valve and inner fan stop running, the running indicator flash; If Swing is started, that the swing motor will stop torun at the
same time. After the condenser is detected with defrost completed, the outer fan, four-way valve will start torun at the same time,
indoor fan will go into running after a delay of 3mins. The swing motor will resume to run after indoorfan is running, compressor
keeps on original running mode, the running indicator stops flashing.
Indoor Fan
Outdoor Fan
Compressor
Cooling
Dehumidifying
Stop
SET
SET
amb
Running
Stop
Min.
Min.
Min.
Min.
Seeting Fan Speed
Low Fan Speed
Min.
amb
set
set
Min.
Min.
Compressor
Outdoor Fan
Indoor Fan
4-way valve
Min.
Setting Fan Speed
Running
Stop
Setting Fan Speed
Min.
Stop Heating
Original Running State
Start Heating
Indoor Fan
Outdoor Fan
Compressor
Stop
Running
Min
During anti-freezing
Low Fan Speed
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