50
1
2
3
4
5
6
M
Gray
Orange
Red
Yellow
Black
Parts name
Check points
Disconnect the connector then measure the resistance with a tester.
(Surrounding temperature 10
~30
)
Thermistor (TH3)
<Outdoor pipe>
Thermistor (TH4)
<Discharge/Compressor surface>
Thermistor (TH6)
<Outdoor 2-phase pipe>
Normal
160k
~410k
4.3k
~9.6k
TH4
TH3
TH6
Abnormal
Open or short
Measure the resistance between the terminals with a tester.
(Surrounding temperature 20
)
Solenoid valve coil (21S4)
<Four-way valve>
Motor for compressor (MC)
Linear expansion valve (LEV)
Normal
Abnormal
Open or short
P71,P100
P125,P140
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20
)
Normal
Gray - Black
Gray - Red Gray - Yellow Gray - Orange
Abnormal
46 ± 3
Open or short
Measure the resistance between the terminals with a tester.
Normal
2304
± 7%
Abnormal
Open or short
P71,P100,P125,P140
CRNKCASE HEATER (CH)
Measure the resistance between the terminals with a tester.
(Surrounding temperature 20
)
Normal
1450 ± 150
Abnormal
Open or short
Solenoid valve coil (SV)
<Bypass valve>
For P125, P140
1500 ± 150
1435 ± 150
Refer to 6-2.
Measure the resistance between the terminals with a tester.
(Winding temperature 20
)
Normal
Abnormal
Open or short
W
V
U
Measure the resistance between the terminals with a tester.
(Surrounding temperature 20
)
FAN MOTOR(MF)
P71, P125, P140
82.5
±10%
102.0
±10%
P100
44.5
±7%
43.7
±7%
Normal
Motor lead wire
Abnormal
Open or short
White — Black
White — Red
Red
Black
White
Orange
Protector
OPEN :140
$
5
CLOSE :90
$
15
Red
Black
P71, P125, P140
P100
White
Protector
OPEN:135
$
5
FUSE
OPEN:141
11-6. HOW TO CHECK THE PARTS
PU(H)-P71VHA
(1)
.UK PU(H)-P100VHA
(1)
.UK PU(H)-P71YHA
(1)
.UK PU(H)-P100YHA
(1)
.UK
PU(H)-P125YHA
(1)
.UK PU(H)-P140YHA
(1)
.UK
PU(H)-P71VHA#2.UK PU(H)-P100VHA#2.UK PU(H)-P71YHA#2.UK PU(H)-P100YHA#2.UK
PU(H)-P125YHA#2.UK PU(H)-P140YHA#2.UK
PU(H)-P71VHAR3.UK PU(H)-P100VHAR3.UK PU(H)-P71YHAR3.UK PU(H)-P100YHAR3.UK
PU(H)-P125YHAR3.UK PU(H)-P140YHAR3.UK
PU(H)-P125YHAR4.UK PU(H)-P140YHAR4.UK
OC379F