Midea M3OF-27HFN1-M - High Condenser Coil Temp. Protection; Outdoor Unit Anti-Freezing Protection; Oil Return

17
CoolReturnI
The difference between current limit
and shutdown current
CoolT4Zone5I
Cooling T4≥50℃ current limit value
CoolT4Zone4I
Cooling 49＞T4≥45℃ current limit
value
CoolT4Zone3I
Cooling 44＞T4≥41℃ current limit
value
CoolT4Zone2I
Cooling 40﹥T4≥33℃ current limit
value
CoolT4Zone1I
Cooling 32＞T4℃current limit value
CoolStopI
Cooling stop protection current value
Heating mode:
℃
15
14 HeatT4Zone4I
10
9 HeatT4Zone3I
6
5 HeatT4Zone2I
HeatT4Zone1I
HeatReturnI
The difference between current limit
and shutdown current
HeatT4Zone4I
Heating T4≥15℃current limit
value
HeatT4Zone3I
Heating 14＞T4≥10℃ current
limit value
HeatT4Zone2I
Heating 9＞T4≥6℃ current limit
value
HeatT4Zone1I
Heating 5＞T4 current limit value
HeatStopI
Heating stop protection current
value
5.3.7 Indoor / Outdoor Units Communication
Protection
If the indoor units do not receive the feedback
signal from the outdoor units for 2 consecutive
minutes, the unit stops. The unit displays the
failure code.
5.3.8 High Condenser Coil Temp. Protection
5.3.9 Outdoor Unit Anti-Freezing Protection
When T2<4℃ for 250seconds or T2<0℃, the
indoor unit capacity demand is zero and resumes
normal operation when T2>8℃ and the protection
time is no less than 3 minutes.
5.3.10 Oil Return
Rules for Operation
1. If the compressor frequency continues to be
lower than the frequency set for setting time, the
unit raises the frequency to the frequency set for
setting time and then resumes with the former
frequency.
2. The EXV continues at 300p while indoor units
maintain their operation.
T3
R e s u m e
O ff
D e c re a s e
H o ld
℃ CoolT4Zone5I
50
49
45 CoolT4Zone4I
44
41
40 CoolT4Zone3I
33
32
CoolT4Zone2I