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Midea CTBU-09HWFN1-M

Midea CTBU-09HWFN1-M
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114
3. IPM continuity check
Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital
tester to measure the resistance between P and UVWN; UVW and N.
Digital tester
Normal resistance value
Digital tester
Normal resistance value
(+)Red
(-)Black
(Several MΩ)
(+)Red
(-)Black
(Several MΩ)
P
N
U
N
U
V
V
W
W
(+)Red
4: Pressure on Service Port
Cooling chart:
COOLING MODE
()
Indoor
Temp.
Outdoor temp.
75
23.89
85
29.44
95
35
105
40.56
115
46.11
BAR
70
8.2
7.8
8.1
8.6
10.1
BAR
75
8.6
8.3
8.7
9.1
10.7
BAR
80
9.3
8.9
9.1
9.6
11.2
PSI
70
119
113
117
125
147
PSI
75
124
120
126
132
155
PSI
80
135
129
132
140
162
MPA
70
0.82
0.78
0.81
0.86
1.01
MPA
75
0.86
0.83
0.87
0.91
1.07
MPA
80
0.93
0.89
0.91
0.96
1.12
0.0
2.0
4.0
6.0
8.0
10.0
12.0
75 23.89 85 29.44
95
35
105
40.56
115
46.11
70
75
80
Pressure (bar)
Outdoor temp.

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