Normal
12
7
TROUBLESHOOTING
7-1. How to check PKFY-P20VAM-A, PKFY-P25VAM-A
Room temperature
thermistor(TH21)
Liquid pipe temperature
thermistor(TH22)
Gas pipe temperature
thermistor(TH23)
Vane motor
Fan motor
Linear expansion
valve
Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 10°C~30°C)
Part Name
Check points
1
Measure the resistance between the terminals using a tester.(Surrounding temperature 20
:
.)
Disconnect the connector then measure the resistance valve using a tester.
(Coil temperature 20°C)
(Refer to the next page for a detail.)
Normal
Abnormal
White-Black
195
'
Open or short
Red-Black
Abnormal
!
At first, check if the electrical pressure is 12V between the
brown wire(GND) and yellow wire(VCC).
@
Slowly start running the fan. It is normal if while the fan rotate once,
the electrical pressure change from 0V to12V then go back to 0V.
If the electrical pressure stay at around 0V or 10V, it means the fan
motor has the defects.
200
'
Normal
(1)-(5)
White-Red
150
'
±10%
Abnormal
Open or short
(2)-(6)
Yellow-Brown
(3)-(5)
Orange-Red
(4)-(6)
Blue-Brown
Normal
1
-
2
Red-Pink
400
'
± 7%
Abnormal
Open or short
1
-
3
Red-Blue
1
-
4
Red-Orange
1
-
5
Red-Yellow
White
Red
Black
Brown
Gray Yellow
CN34
1
4
6
3
2
1
FAN
1
2
3
4
5
6
LEV
White
Yellow
Orange
Blue
Red
Brown
CN60
2
Without disassembling the parts, measure the electrical pressure of the gray wire(Signal line) and
brown wire (GND) while the power is on.
1
Measure the resistance between the terminals using a tester.(Surrounding temperature 25
:
.)
Normal
4.3k
'
~9.6k
'
Abnormal
Open or short
Blue
Yellow
Red
Orange
Pink
3
5
1
4
2
Connect pin No.
M
OC254---1.qxp 2/20/01 10:26 AM Page 12
