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OC277-48
5. How to check the parts
Parts name Check points
Disconnect the connector then measure the resistance using a tester.
(Ambient temperature 50°F to 86°F)
Measure the resistance between the terminals using a tester.
(Ambient temperature 77°F)
Vane motor (MV)
(Refer to the next page for a detail.)
Room temperature
thermistor (RT1)
Liquid pipe
thermistor (RT2)
Normal
4.3k" to 9.6k"
Abnormal
Open or short
Normal
Connector
Abnormal
24,30,36,42GK
150" Open or short
Orange
Red
Pink
Red — Yellow
Red — Blue
Red — Orange
Red — Pink
Blue
Yellow
31
5
2
4
Measure the resistance between the terminals using a tester.
Opening and closing temperature of protector.
Open: 266i41°F (Fan motor OFF)
Close: 176i68°F (Fan motor ON)
Fan motor (MF)
1
1
2
2
3
3
Red
White
Black
Relay connector
Protector
24GK
41.1"
54.3"
Abnormal
Open or short
30,36,42GK
20.4"
20.7"
Red-Black
White-Black
Motor terminal
or
Relay connector
Normal
PCH
M
OC277--2.qxp 1.12.14 1:42 PM Page 48