44
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
thermistor(TH5)
Thermistor R
0
=15k
Ω
± 3%
Fixed number of B=3480 ± 2%
Rt=15exp { 3480( ) }
0
:
15k
Ω
10
:
9.6k
Ω
20
:
6.3k
Ω
25
:
5.4k
Ω
30
:
4.3k
Ω
40
:
3.0k
Ω
Thermistor for
lower temperature
1
273+t
1
273
1
1
2
2
3
3
Red
White
Black
Relay connector
Protector
OPEN :
130
i
5
:
CLOSE : 80
i
20
:
4
5
2
3 6 1
Orange
Red
Pink
Yellow Brown Blue
M
Parts name
Check points
Measure the resistance between the terminals with a tester.
(Winding temperature 20
:
)
Fan motor (MF)
Abnormal
Open or short
Red–Black
White–Black
Motor terminal
or
Relay connector
RP2.5
RP3
99.5
"
103.9
"
RP4
62.6
"
74.0
"
Normal
Open or short
Abnormal
Brown–Yellow
Brown–Blue
Red–Orange
Red–Pink
Connector
Normal
RP2.5, RP3, RP4
186~214
"
Measure the resistance between the terminals with a tester.
(Surrounding temperature 20
:
~30
:
)
Vane motor (MV)
Disconnect the connector then measure the resistance with a tester.
(Surrounding temperature 10
:
~30
:
)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor/liquid(TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Normal
4.3k
"
~9.6k
"
Abnormal
Open or short
9-6. How to check the parts
PKA-RP2.5FAL
PKA-RP3FAL
PKA-RP4FAL
OC301B--2.qxp 13.8.20 3:22 PM Page 44
OC301B
