How To Check The Parts - Mitsubishi Electric PUHZ-RP3VHA Technical & Service Manual

HOW TO CHECK THE PARTS

PUHZ-RP3VHA PUHZ-RP5VHA
PUHZ-RP4VHA PUHZ-RP6VHA
Parts name
Outdoor pipe <liquid>
Disconnect the connector then measure the resistance using a tester.
temperature
(Surrounding temperature 10:~30:)
thermistor (TH3)
Discharge temperature
thermistor (TH4)
Outdoor condenser/
evaporator temperature
thermistor (TH6)
Outdoor outside
temperature
thermistor (TH7)
Heat sink
temperature
thermistor (TH8)
Fan motor(MF1,MF1) Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
Red W
Relay connector
White
V
Red — Black
Black
U
Black — White
Pin number of relay
connector is different
White — Red
from that motor
connector
4-Way valve Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:)
solenoid coil
(21S4)
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
(Winding temperature 20:)
valve (LEV-A/LEV-B)
3
Red
2
M
1
Brown
5
2
1 Red - White
Blue
4 3
6
Orange
4
Yellow
5
White
6
Measure the resistance between the terminals using a tester.
Bypass valve
(Surrounding temperature 20:)
solenoid coil
(SV)
Normal
TH4 160k"~410k"
TH3
TH6 4.3k"~9.6k"
TH7
TH8 39k"~105k"
Normal
15.1±0.5"
PUHZ-RP3VHA
2350±170"
PUHZ-RP3VHA
0.865"~0.895"
Normal
(1) - (6) (1) - (4) (2) - (5)
Red - Orange Brown - Yellow
46±4"
Normal
1197±10"
Check points
Abnormal
Open or short
Abnormal
Open or short
Normal
PUHZ-RP4, 5, 6VHA
1370±100"
Normal
PUHZ-RP4, 5, 6VHA
0.266"
Abnormal
(2) - (3)
Brown - Blue Open or short
Abnormal
Open or short
39
Abnormal
Open or short
Abnormal
Open or short