Johnson Controls P Series Installation And Maintenance Manual page 26

●Outdoor unit:
Key detection point
"Test point NO."
Test 1 Between A and C
Test 2 Between B and C
Test 3 Between D and E
Test 4 Between F and G
Test 5 Both ends of diode D59
Both ends of electrolytic
Test 6
capacitor C47
Both ends of electrolytic
Test 7
capacitor C60
Both ends of electrolytic
Test 8
capacitor C73
Test 9 Between S and T
Test 10 Between point N and GND
Test 11 U7
Test 12 Between point M and GND
Test 13 U8
17
Test point
Neutral wire ,live wire
Neutral wire ,live wire
Electrolytic capacitor of DC bas bar
Electrolytic capacitor of switch power
D59(IPM module +15V)
C47(+12V power)
C60(+5V power)
C73(+3.3V power)
Communication circular current
C50 to N terminal (ground) (signal receiving terminal of
outdoor unit)
Between 1 and 2 at leading foot of U7
R77 to N terminal (ground) (signal receiving terminal of
outdoor unit)
Between 3 and 4 at leading foot of U8
Related elements Test value under normal conditions
160V-265V
160V-265V
DC 180V-380V
DC 180V-380V
DC 14.5V-15.5
DC 12V-13V
DC 5V
DC 3.3V
DC 56V
Jumping between 0V and 3.3V
Jumping between 0V and 3.3V
Jumping between 0V and 3.3V
Jumping between 0V and 3.3V
Installation and Maintenance