Service manual
20
9.6 Heating mode
9.6.1 Generally, the 4-way valve is open at heating mode, but it is closed at defrosting. 4-way valve
must delay 2 minutes compared with compressor if the compressor changed into non-heating
mode or turned off. 4-way valve doesn't delay in defrosting mode.
9.6.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode,
except for the defrosting mode or the end of defrost.
9.6.3 Action of compressor at heating mode: compressor must run for 7 minutes after starting and then
judge the difference between setting temperature and room temperature. Meanwhile other
protections are still valid.
9.6.4 Indoor Fan actions at heating mode
Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind function
prevails.
Anti-cold wind control function at heating mode
Condition
（
T= Indoor exchanger temp.
）
Indoor fan speed
T<34
℃
Off
34
℃
<T<37
℃
Breeze
37
℃
<T<44
℃
Low speed
Indoor exchanger temp. up
T>44
℃
Setting fan speed
T> 38
℃
Setting fan speed
33
℃
<T<38
℃
Low sped
24
℃
<T<33
℃
Breeze
Indoor exchanger temp. down
T<24
℃
Off
When the indoor temp. reaches setting temp, indoor changes to breeze speed immediately, after 127
second, indoor fan stop.
9.6.5 Auto wind at heating mode
Condition (T=Indoor Temp.-Setting Temp.) Indoor fan speed
T<1.5
℃
High
1.5
℃
<T<2.5
℃
Med.
Room temp. up
T>2.5
℃
Low
T<1.0
℃
High
1.0
℃
<T<2.0
℃
Med.
Room temp. down
T>2.0
℃
Low
℃
+5.0 H
+4.5
+3.5 G
+3.0 F
+2.5 E
+2.0 D
+1.5 C
+1.0 B
+0.5 A
