Midea M4OB-36HFN1-Q - Outdoor unit point check function; Digital display tube content explanation

Service manual DM16-01.01.11-01en
30 Multi DC inverter R410A. Outdoor unit
3 A indoor unit capacity
The capacity unit is horse power. If the indoor unit is not connected,
the digital display tube will show: “――”
(7K:0.8HP, 9K:1HP,12K:1.2HP,18K:1.5HP)
4 B indoor unit capacity
5 C indoor unit capacity
6 D indoor unit capacity
7 E indoor unit capacity
8 A Indoor unit capacity demand code
Norm value*HP
(7K:0.8HP, 9K:1HP,12K:1.2HP,18K:1.5HP)
9 B Indoor unit capacity demand code
10 C Indoor unit capacity demand code
11 D Indoor unit capacity demand code
12 E Indoor unit capacity demand code
13 Total indoor units amendatory capacity
demand code
14 The frequency corresponding to the total
indoor units amendatory capacity demand
15 The frequency after the frequency limit
16 The frequency sending to compressor
control chip
17 A indoor unit evaporator outlet temp.(T
2B
A)
If the temp. is lower than -9 degree, the digital display tube will show
“-9”.If the temp. is higher than 70 degree, the digital display tube will
show “70”. If the indoor unit is not connected, the digital display tube
will show: “――”
18 B indoor unit evaporator outlet temp.(T
2B
B)
19 C indoor unit evaporator outlet temp.(T
2B
C)
20 D indoor unit evaporator outlet temp.(T
2B
D)
21 E indoor unit evaporator outlet temp.(T
2B
E)
22 A indoor unit room temp.(T
1
A) If the temp. is lower than 0 degree, the digital display tube will show
“0”.If the temp. is higher than 70 degree, the digital display tube will
show “70”. If the indoor unit is not connected, the digital display tube
will show: “――”
23 B indoor unit room temp.(T
1
B)
24 C indoor unit room temp.(T
1
C)
25 D indoor unit room temp.(T
1
D)
26 E indoor unit room temp.(T
1
E)
27 A indoor unit evaporator temp.(T
2
A)
If the temp. is lower than -9 degree, the digital display tube will show
“-9”.If the temp. is higher than 70 degree, the digital display tube will
show “70”. If the indoor unit is not connected, the digital display tube
will show: “――”
28 B indoor unit evaporator temp.(T
2
B)
29 C indoor unit evaporator temp.(T
2
C)
30 D indoor unit evaporator temp.(T
2
D)
31 E indoor unit evaporator temp.(T
2
E)
32 Condenser pipe temp.(T3)
33 Outdoor ambient temp.(T4)
34 Compressor discharge temp.(T5) The display value is between 30~129 degree. If the temp. is lower
than 30 degree, the digital display tube will show “30”.If the temp. is
higher than 99 degree, the digital display tube will show single digit
and tens digit. For example, the digital display tube show “0.5”,it
means the compressor discharge temp. is 105 degree.)
35 AD value of current The display value is hex number.
For example ,the digital display tube show “Cd”, it means AD value is
205.
36 AD value of voltage
37 EXV open angle for A indoor unit
Actual data/4.
If the value is higher than 99, the digital display tube will show single
digit and tens digit.
For example ,the digital display tube show “2.0”,it means the EXV
open angle is 120×4=480p.)
38 EXV open angle for B indoor unit
39 EXV open angle for C indoor unit
40 EXV open angle for D indoor unit
41 EXV open angle for E indoor unit
42 Frequency limit symbol
Bit7
Frequency limit caused by IGBT
radiator
The display value
is hex number. For
example, the
digital display tube
show 2A,then
Bit6
Frequency limit caused by PFC
Bit5
Frequency limit caused by T4.