Mitsubishi Electric PUHZ-RP8YHA Technical & Service Manual page 43

13-6. HOW TO CHECK THE PARTS
PUHZ-RP8YHA
PUHZ-RP10YHA
Parts name
Disconnect the connector then measure the resistance using a tester.
Thermistor (TH3, TH32)
(Surrounding temperature 10:~30:)
<Outdoor pipe>
Thermistor (TH4)
<Discharge>
Thermistor (TH6) TH3, TH32
<Outdoor 2-phase pipe>
Thermistor (TH7)
<Outdoor>
Fan motor(MF1,MF2) Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
Black W
Relay connector
White
V
Red — Black
Red
U
Black — White
Pin number of relay
connector is different
White — Red
from that motor
connector
Solenoid valve coil Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:)
<Four-way valve>
(21S4)
Motor for compressor Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
(MC)
U
V
W
Disconnect the connector then measure the resistance using a tester.
Linear expansion valve
(Winding temperature 20:)
( LEV(A) )
Red
M
1
Red - White Red - Orange Brown - Yellow Brown - Blue
Brown
2
Blue
3
Orange
4
Yellow
5
White
6
Measure the resistance between the terminals using a tester.
Solenoid valve coil
(Surrounding temperature 20:)
<Bypass valve>
(SV)
Normal
TH4 160k"~410k"
TH6 4.3k"~9.6k"
TH7
Normal
15.3±0.5"
Normal
1370±100"
Normal
0.72"
Normal
46±4"
Normal
1197±10"
Check points
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
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