Panasonic U-8ME1E81 Service Manual page 174

6. Inspection and Characteristics of Parts
6. Inspection and Characteristics of Parts
(4) Coil Resistance of Outdoor Unit Fan Motor
Resistance
(at 20°C)
(5) Coil Resistance of Compressor Motor
Outdoor unit
8HP 5JD650ZBA22
10HP 5JD650ZBA22
5JD420ZCA22
12HP
C-SDN523H8B
5JD650ZBA22
14HP
C-SDN453H8B
5JD650ZBA22
16HP
C-SDN523H8B
5JD650ZBA22
18HP
C-SDN453H8B
5JD650ZBA22
20HP
C-SDN523H8B
(6) Characteristics of Thermistor
Ambient air temperature
●
thermistor (TO)
Suction temperature
●
thermistor (SCT)
Refrigerant gas outlet of
●
dual-tube thermistor (SCG)
Heat exchanger liquid
●
temperature thermistor (EXL)
Heat exchanger gas
●
temperature thermistor (EXG)
6
Discharge temperature (DISCH) thermistor
●
200
180
160
140
120
100
80
60
40
20
0
0
8HP 10HP
U - V
U - W
V - W
Inverter compressor (at 20°C)
U - V
0.570
0.570
1.083
0.570
0.570
0.570
0.570
40
35
30
25
20
15
10
5
0
-20
10 20 30 40 50 60 70
Temperature( )
°C
DMSBG75SY
12HP 14HP 16HP
8.8
8.8
8.8
Constant speed compressor (at 25°C)
U - W V - W
0.587 0.580
0.587 0.580
1.123 1.096
0.587 0.580
0.587 0.580
0.587 0.580
0.587 0.580
-15 -10 -5 0 5 10 15
Temperature( )
°C
80 90
6 - 32
2WAY SYSTEM
2WAY SYSTEM
Trouble Diagnosis
Trouble Diagnosis
unit : ohm
18HP 20HP
unit : ohm
U - V U - W V - W
1.695 1.716 1.667
1.865 1.884 1.835
1.695 1.716 1.667
1.865 1.884 1.835
1.695 1.716 1.667
8
7
6
5
4
3
2
1
0
20 20 30 40
Temperature(
50 60
)
°C