Midea MCH2U-18PHH2, Service Manual

Page: 39 / 131

39
11 Indoor unit D capacity demand code
12 Indoor unit E capacity demand code
13 Outdoor unit 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 Indoor unit A evaporator outlet temperature
(T
2B
A)
If the temperature is lower than -9
℃
, the digital display shows “-
9.” If the temperature is higher than 70
℃
, the digital display
shows “70.” If the indoor unit is not connected, the digital display
shows: “――”
18 Indoor unit B evaporator outlet temperature
(T
2B
B)
19 Indoor unit C evaporator outlet temperature
(T
2B
C)
20 Indoor unit D evaporator outlet temperature
(T
2B
D)
21 Indoor unit E evaporator outlet temperature
(T
2B
E)
22 Indoor unit A room temperature (T
1
A)
If the temperature is lower than 0
℃
, the digital display shows “0.”
If the temperature is higher than 50
℃
, the digital display shows
“50.” If the indoor unit is not connected, the digital display shows:
“――”
23 Indoor unit B room temperature (T
1
B)
24 Indoor unit C room temperature (T
1
C)
25 Indoor unit D room temperature (T
1
D)
26 Indoor unit E room temperature (T
1
E)
27 Indoor unit A evaporator temperature (T
2
A)
If the temperature is lower than -9 ℃ , the digital display shows “-
9.” If the temperature is higher than 70 ℃ , the digital display
shows “70.” If the indoor unit is not connected, the digital display
shows: “――”
28 Indoor unit B evaporator temperature (T
2
B)
29 Indoor unit C evaporator temperature (T
2
C)
30 Indoor unit D evaporator temperature (T
2
D)
31 Indoor unit E evaporator temperature (T
2
E)
32 Condenser pipe temperature (T3)
33 Outdoor ambient temperature (T4)
34 Compressor discharge temperature (TP) The display value is between 30–129 ℃ . If the temperature is
lower than 30 ℃ , the digital display shows “30.” If the temperature
is higher than 99 ℃ , the digital display shows single and double
digits. For example, if the digital display shows “0.5", the
compressor discharge temperature is 105
℃
.
35 AD value of current
The display value is a hex number.
For example, the digital display tube shows “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 shows single and
double digits.
For example, if the digital display shows “2.0", 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 a
hexidecimal
number. For
example, the
digital display
show 2A, then
Bit6
Frequency limit caused by PFC
Bit5
Frequency limit caused by T4.
Bit4
Frequency limit caused by T2.
Bit3
Frequency limit caused by T3.