47
10
TROUBLESHOOTING
1
1
2
2
3
3
Red
White
Black
Relay connector
Protector
OFF:130
i
5
:
ON :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 using a tester.
(Winding temperature 20
:
)
Fan motor
107
"
Measure the resistance between the terminals using a tester.
Contactor
(for heater)
(Only P2.5~P4FALH
P2.5~P4FALH
1
P2.5~P4FALH
2
)
Abnormal
Open or short
7
8
88H
Normal
P2.5, P3, P4
Abnormal
Open or short
Red–Black
White–Black
Motor terminal
or
Relay connector
P2.5, P3
99.5
"
103.9
"
P4
62.6
"
74.0
"
Normal
Open or short
Abnormal
Brown–Yellow
Brown–Blue
Red–Orange
Red–Pink
Connector
Normal
P2.5, P3, P4
186~214
"
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20
:
~30
:
)
Vane motor
Measure the resistance of each heater element by using a tester.
Heater
(Only P2.5~P4FALH
P2.5~P4FALH
1
P2.5~P4FALH
2
)
Normal
Abnormal
P2.5, P3
18.9
"
700W 240V
P4
16.5
"
800W 240V
Open or short
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10
:
~30
:
)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor (TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Normal
4.3k
"
~9.6k
"
Abnormal
Open or short
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
Ω
± 3%
Fixed number of B=3480k
Ω
± 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
How to check the parts
PKH-P2.5/3/4FALH, PKH-P2.5/3/4FALH
1
, PKH-P2.5/3/4FALH
2
PKA-P2.5/3/4FAL,
PKA-P2.5/3/4FAL
1
,
PKA-P2.5/3/4FAL
2
OC175B--2.qxp 01.10.2 6:10 PM Page 47
