6 - 29
5. Inspection and Characteristics of Parts
2WAY SYSTEM
Trouble Diagnosis
6
6. Inspection and Characteristics of Parts
2WAY SYSTEM
Trouble Diagnosis
U - V 8.8
8HP 10HP 12HP 14HP 16HP
U - W
Resistance
(at 20°C)
Outdoor Unit Type
DMSBG75SY
unit : ohm
8.8
V - W 8.8
18HP 20HP
Compressor
Type
5JD650ZCA22
unit : ohm
0.678
0.700
0.691
Resistance
(at 20°C)
(6) Coil Resistance of Outdoor Unit Fan Motor
(7) Coil Resistance of Compressor Motor
(8) Characteristics of Sensor
Resistor (kΩ)
Resistor (kΩ)
●
Outdoor air temp. sensor (TO)
●
Compressor intake temp.
sensor (SCT)
Temperature(
°C)
Temperature(
°C
)
●
Temp. sensor at refrigerant
gas outlet of dual-tube (SCG)
●
Outdoor coil liquid temp.
sensor (EXL1, EXL2)
●
Outdoor coil gas temp.
sensor (EXG1, EXG2)
40
35
30
25
20
15
10
5
0
-10-15-20 20
20 30 40 50 60
151050-5
8
7
6
5
4
3
2
1
0
Resistor (kΩ)
Temperature(°C)
● Compressor discharge gas temp. sensor (DISCH1, DISCH2)
0908070605040302010
0
40
60
80
100
120
140
160
180
200
20
U - V
U - W
V - W
2WAY VRF SYSTEM
Trouble Diagnosis
8. Thermister Characteristics Curve
(4) Indoor suction air (room) temp. sensor (TA)
Indoor discharge air temp. sensor (BL)
(5) Indoor coil temp. sensor (E1, E3)
40
35
30
25
20
15
10
5
0
-20 -15 -10-505101520
8
7
6
5
4
3
2
1
0
20 30 40 50 60
10 555045403530252015
10
9
8
7
6
5
4
3
1
2
Resistance
Resistance
Resistance
Temperature (˚C)
Temperature (˚C)
Temperature (˚C)
SM830253-00_欧州2way7_SM-TRSM.indb 29 16/08/02 14:02:53
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