Suz-Ka50Va3.Th - Mitsubishi Electric SUZ-KA25VA3 Service Manual

11-4. TROUBLE CRITERION OF MAIN PARTS
SUZ-KA25VA3.TH SUZ-KA35VA3.TH
arts name
Defrost thermistor (RT61)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor(RT68)
Discharge temperature
thermistor (RT62)
Compressor
Outdoor fan motor
R.V. coil (21S4)
Expansion valve coil
(LEV)
OCH530A

SUZ-KA50VA3.TH

Chec method and criterion
Measure the resistance with a tester.
Refer to 11-6. Test point diagram and voltage 11-6-1. (KA25 35 50) or
11-6-2. (KA60 71) nverter .C. board for the chart of thermistor.
Measure the resistance with a tester.
efore measurement hold the thermistor with your hands to warm it up.
Refer to 11-6. Test point diagram and voltage 11-6-1. (KA25 35 50) or
11-6-2. (KA60 71) nverter .C. board for the chart of thermistor.
Measure the resistance between terminals with a tester.
(Temperature -10 C 40 C)
SUZ-KA25VA3.TH
U-V
U-
1.36 Ÿ 1.93 Ÿ
V-
Measure the resistance between terminals with a tester.
(Temperature -10 C 40 C)
Color of the lead wire
SUZ-KA25/35VA3.TH
T - LK
LK - RED
RED - T
Measure the resistance between terminals with a tester.
(Temperature -10 C 40 C)
Normal
1.19 Ÿ 1.78 Ÿ
Measure the resistance with a tester.
(Temperature -10 C 40 C)
SUZ-KA25/35VA3.TH
Color of the lead wire
T - RED
RED - ORN
L - RN
RN - LU
Measure the resistance with a tester.
(Temperature -10 C 40 C)
SUZ-KA50/60/71VA3.TH
Color of the lead wire
RED - ORN
RED - T
RED - LU
RED - L
SUZ-KA60VA3.TH SUZ-KA71VA3.TH
Normal
SUZ-KA35VA3.TH SUZ-KA50/60VA3.TH
1.52 Ÿ 2.17 Ÿ 0.78 Ÿ 1.11 Ÿ
Normal
SUZ-KA50/60/71VA3.TH
29 Ÿ 42 Ÿ
Normal
37 Ÿ 54 Ÿ
Normal
37 Ÿ 54 Ÿ

T
SUZ-KA71VA3.TH
V
0.92 Ÿ 1.12 Ÿ
T
V
12 Ÿ 17 Ÿ
T
RED
ORN
T
ORN
RED
Figure
RED LK
U
RED LK
U
LEV
LEV
L
LU