Midea MSG-12HRIN2

Service manual
37
Condition Compressor Outdoor fan
T> Ts+3 Off Off Room temp. up
T<Ts+3 On On
T< Ts+2 On On Room temp. down
T>Ts+2 Off Off
11.6.4. 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. gets to setting temp, indoor changes to breeze speed immediately, after 127
second, indoor fan stop.
11.6.5. 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
11.6.6. Indoor evaporator high-temperature protection at heating mode
Condition (T= Indoor exchanger temp.) Compressor
T<48℃ On
53℃<T<63℃ Decrease frequency of compressor
T>63℃ Off
11.6.7. The current protection
Model Current Compressor
I>19.0 A Off
15.0.A<I<19.0A Decrease frequency of compressor
Current up 18000btu/h
I< 12.5A On
I>18.5 A Off
14.5A<I<18.5A Decrease frequency of compressor
Current down 18000btu/h
I< 12.0A On
11.6.8. The temp. compensation
Jump setting in indoor PCB
J2 On On Off Off
J3 On Off On Off
ΔT
0℃ -4℃ -2℃ 0℃