York HP Series, Service Manual

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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
Pressure (bar)
Outdoor temp.