30
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(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R
0
=15k
"
± 3%
Fixed number of B=3480k
"
± 2%
Rt=15exp { 3480( ) }
0
:
15k
"
10
:
9.6k
"
20
:
6.3k
"
25
:
5.2k
"
30
:
4.3k
"
40
:
3.0k
"
Thermistor for
lower temperature
1
273+t
1
273
10-5. HOW TO CHECK THE PARTS
Parts name
Check points
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10
:
~30
:
)
(Refer to the thermistor)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor (TH2)
Condenser/Evaporator
temperature thermistor
(TH5)
Normal
4.3k
"
~9.6k
"
Abnormal
Open or short
