28
9-6. HOW TO CHECK THE PARTS
Parts name
Check points
Disconnect the connector then measure the resistance using a tester.
(At the ambient temperature 10 to 30
:
)
Vane motor (MV)
Refer to “9-6-1.Thermistor”.
Room temperature
thermistor (TH1)
Pipe temperature
thermistor/liquid (TH2)
Condenser/Evaporator
temperature thermistor
(TH5)
Normal
4.3 to 9.6k
"
Abnormal
Open or short
Measure the resistance between the terminals using a tester. (Coil temperature 20
:
)
Normal
250
"
± 7%
Abnormal
1
-
2
Brown-Red
1
-
3
Brown-Orange
1
-
4
Brown-Yellow
1
-
5
Brown-Green
Open or short
Fan motor (MF)
2
Red
4
Yellow
1
Brown
Orange
3
Green
5
Connect pin No.
M
Refer to “9-6-2. DC Fan motor (fan motor/indoor controller circuit board)”.
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 (TH1)
Pipe temperature thermistor/liquid (TH2)
Condenser/evaporator temperature ther-
mistor (TH5)
Thermistor R
0
=15k
"
± 3%
Fixed number of B=3480
± 2%
Rt=15exp { 3480( ) }
0
:
15 k
"
10
:
9.6 k
"
20
:
6.3 k
"
25
:
5.4 k
"
30
:
4.3 k
"
40
:
3.0 k
"
Thermistor for
lower temperature
1
273+t
1
273
9-6-1. Thermistor
PKA-M60KA.TH PKA-M70KA.TH PKA-M100KA.TH
PKA-M60KAL.TH PKA-M70KAL.TH PKA-M100KAL.TH
OCH661
