Mitsubishi Electric PKA-RP1.6GAL Service Technical Manual page 28

5-2. OUTDOOR UNIT
PUHZ-RP1.6HA
PUHZ-RP4VHA
PUHZ-RP4VHA
1
PUHZ-RP4VHA-A PUHZ-RP5VHA-A PUHZ-RP6VHA-A
PUHZ-RP4VHA -A PUHZ-RP5VHA
1
Parts name
Disconnect the connector then measure the resistance using a tester.
Thermistor (TH3)
(Surrounding temperature 10:~30:)
<Outdoor pipe>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<Outdoor 2-phase pipe>
Thermistor (TH7)
<Outdoor>
Thermistor (TH8)
<Heat sink>
Fan motor(MF1,MF2) 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
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),LEV(B) )
3
Red
M 2
1
(1) - (6)
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.
Solenoid valve coil
(Surrounding temperature 20:)
<Bypass valve>
(SV)
RP2.5-6VHA only
PUHZ-RP2VHA
PUHZ-RP5VHA
PUHZ-RP5VHA
1
-A PUHZ-RP6VHA
1
Normal
TH4 160k"~410k"
TH3
TH6 4.3k"~9.6k"
TH7
TH8 39k"~105k"
RP1.6V, 2V
66.5±3.3"
RP1.6-3V
2350±170"
RP1.6V, 2V
0.300"~0.340"
Normal
(1) - (4) (2) - (5)
Red - Orange Brown - Yellow
46±4"
Normal
1197±10"
PUHZ-RP2.5VHA
PUHZ-RP6VHA
PUHZ-RP6VHA
1
-A
1
Check points
Abnormal
Open or short
Normal
RP2.5-6V
15.1±0.5"
Normal
RP4-6V
1370±100"
Normal
RP2.5V, 3V
0.865"~0.895"
(2) - (3)
Brown - Blue Open or short
Abnormal
Open or short
28
PUHZ-RP3VHA
Abnormal
Open or short
Abnormal
Open or short
Abnormal
RP4-6V
Open or short
0.266"
Abnormal