51
Part name
Check method and criterion
Measure the resistance using a tester.
(Part temperature : -10°C ~ 40°C)
Defrost thermistor (RT62)
Outdoor heat exchanger
temperature thermistor
(RT68)
Normal
abnormal
5k
Ω
~ 55k
Ω
Open or short-circuit
Normal
abnormal
100k
Ω
~ 250k
Ω
Opened or short-circuit
Normal
abnormal
2.6k
Ω
~ 3.3k
Ω
Open or short-circuit
Normal
abnormal
0.40
Ω
~ 0.49
Ω
Open or short-circuit
Measure the resistance using a tester, after warming up the thermistor by holding by hand.
(Part temperature : 20°C ~ 40°C)
Discharge temperature
thermistor (RT61)
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
Compressor (MC)
W
U
V
WHT
RED
BLK
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
Outdoor fan motor (MF)
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
R. V. coil (21S4)
Measure the resistance using a tester.(Part temperature : -10°C ~ 40°C)
Expansion valve (LEV)
LEV
WHT
RED
YLW BRN
ORN
BLU
Color of lead wire
Normal
WHT - RED
RED - ORN
YLW - BRN
BRN - BLU
Abnormal
Open or
short-circuit
37.4
Ω
~ 53.9
Ω
SUZ-A18VR.TH
SUZ-A24VR.TH
U
RED
WHT
BLK
V
W
(W)
(V)
(U)
Normal
RED - BLK
BLK - WHT
WHT - RED
Open or
short-circuit
(Not including
WHT - ORN)
13.4
Ω
~ 16.4
Ω
abnormal
Color of
lead wire
Normal
abnormal
25k
Ω
~ 100k
Ω
Open or short-circuit
Measure the resistance using a tester.
(Part temperature : 10°C ~ 40°C)
Fin temperature thermistor
(RT65)
12-2-2. Trouble criterion of main parts (2)
OC304A --2qxp 04.6.29 8:34 AM Page 51