Midea M2OE-14HFN1-Q Service Manual page 31

DM16-01.01.11-01en
43 Average value of T2
44 Outdoor unit fan motor state
45 The last error or protection code
10.5 Protection
10.5.1 Three minutes delay at restart for compressor.
10.5.2 Temperature protection of compressor discharge.
When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules:
10.5.3 Low voltage protection
Note: if the low voltage protection occurs and not resumes within 3min, it will keep the protection always
after restart the machine.
10.5.4 Compressor current limit protection
Temperature interval.of current limit is same as range of T4 limited frequency.
Multi DC inverter R410A. Outdoor unit
Bit4
Bit3
Bit2
Bit1
Bit0
(Sum T2 value of all indoor units)/( number of indoor units in good
connection)(cooling:T2B, heating:T2)
Fan off:0, High speed:1, Med speed:2, Low speed:3 Breeze:4, Super
breeze:5
00 means no malfunction and protection
T 5
C o m p re s s o r o ff
F re q u e n c y lim it
F re q u e n c y h o ld in g
N o rm a l
V O L T A G E
V O L T _ LT M _ F R E Q 1_ A D D
V O L T _ LT M _ F R E Q 2_ A D D
Frequency limit caused by T2.
Frequency limit caused by T3.
Frequency limit caused by T5.
Frequency limit caused by current
Frequency limit caused by voltage
N o lim it
Service manual
Bit5=1, Bit3=1,
Bit1=1.
It means
frequency limit
caused by T4,T3
and current.
31