Coil Resistance Of Outdoor Unit Fan Motor; Coil Resistance Of Compressor Motor; Characteristics Of Thermistor; Discharge Temperature (Disch) Thermistor - Panasonic U-8ME1E81 Service Manual

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
10HP
12HP
14HP
1
16HP
18HP
20HP
2

(6) Characteristics of Thermistor

Ambient air temperature
●
thermistor (TO)
Suction temperature
●
3
thermistor (SCT)
Refrigerant gas outlet of
●
dual-tube thermistor (SCG)
Heat exchanger liquid
●
temperature thermistor (EXL)
4
Heat exchanger gas
●
temperature thermistor (EXG)

Discharge temperature (DISCH) thermistor

●
5
200
180
160
140
6
120
100
80
7
60
40
20
0
0
8
8HP
U - V
U - W
V - W
Inverter compressor (at 20°C)
U - V
5JD650ZBA22 0.570
5JD650ZBA22 0.570
5JD420ZCA22 1.083
C-SDN523H8B
5JD650ZBA22 0.570
C-SDN453H8B
5JD650ZBA22 0.570
C-SDN523H8B
5JD650ZBA22 0.570
C-SDN453H8B
5JD650ZBA22 0.570
C-SDN523H8B
40
35
30
25
20
15
10
5
0
10 20 30 40 50 60
Temperature( )
°C
DMSBG75SY
10HP 12HP 14HP
8.8
8.8
8.8
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
-20 -15 -10 -5 0 5 10
Temperature( )
°C
70 80 90
3-32
Trouble Diagnosis
Trouble Diagnosis
unit : ohm
16HP 18HP 20HP
Constant speed compressor (at 25°C)
U - V U - W
1.695 1.716
1.865 1.884
1.695 1.716
1.865 1.884
1.695 1.716
8
7
6
5
4
3
2
1
0
15 20 20 30
Temperature(
2WAY SYSTEM
2WAY SYSTEM
unit : ohm
V - W
1.667
1.835
1.667
1.835
1.667
40 50 60
)
°C