0
1
1
9. How to check the parts PKH-GKLH, PKH-GKL
Room temperature
thermistor
(RT1)
Pipe temperature
thermistor (RT2)
Fan motor (MF)
Disconnect the connector, then measure the resistance with a tester.
(Surrounding temperature 10°C~0°C)
Measure the resistance between the terminals with a tester.
(Refer to the thermistor)
Normal
.k
'
~9.6k
'
Abnormal
Open or short
Motor terminal
or
Relay connector
Normal
PKH-GKLH, PKH-GKL
1.6/2
Abnormal
Red-Black
11.2
'
Open or short
White-Black
11.
'
1
3
3
2
5
1
Red
C
White
Black
Relay connector
Protector
Parts name
Check points
0
10
20
30
40
50
-20 -10 0
10 20 30 40 50
< Thermistor for lower temperature >
Temperature (
)
Resistance (K
)
<Thermistor Characteristic graph>
Room temperature thermistor(RT1)
Pipe temperature thermistor(RT2)
Thermistor R
0
=1k
'
± %
Fixed number of B=80
± 2%
Rt=1exp { 80( ) }
0
:
1k
'
10
:
9.6k
'
20
:
6.k
'
2
:
.2k
'
0
:
.k
'
0
:
.0k
'
Thermistor for
lower temperature
1
27+t
1
27
Vane motor (MV)
Measure the resistance between the terminals with a tester.
(Surrounding temperature 20°C~0°C)
Normal
186~21
'
Abnormal
Open or short
3 6 1
4
5
2
M
Pink
Connector
Red
Orange
Blue
Brown
Yellow
Brown-Yellow
Brown-Blue
Red-Orange
Red-Pink
OC229A
