Toshiba RAS-07PKVP-E Service Manual page 92

High Wall, Heat Pump Type
No. Part name
4-way valve coil (Comp.
cylinder switching)
(Model : VHV-01AZ535B1)
4
Pulse motor valve coil
(Model : C12A-80A)
5
Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction
temperature sensor (TS),
outdoor heat exchanger
6
temperature sensor (TE)
10-11-4.Checking Method for Each Part
No. Part name
Electrolytic capacitor
(For boost, smoothing)
1
Diode block
(DB01, DB02)
2
Measure the resistance value of winding by using the tester.
Measure the resistance value of winding by using the tester.
COM
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
Temperature
Sensor
TD (k )
TO,TS,TE (k )
1) Turn OFF the power supply breaker.
2) Discharge all three capacitors completely.
3) Check that safety valve at the bottom of capacitor is not broken.
4) Check that vessel is not swollen or exploded.
5) Check that electrolytic liquid does not blow off.
6) Check that the normal charging characteristics are shown in continuity test by the tester.
C09
C08 C10
C08, C09, C10 500μF/400V
1) Turn OFF the power supply breaker.
2) Completely discharge the four electrolytic capacitors.
3) Remove the diode block from the PCB (which is soldered in place).
4) Use a multimeter with a pointer to test the continuity, and check that the diode block has the proper
rectification characteristics.
+
1
~ ~
~
+
3 2
1 2 3 4
–
4
92
Checking procedure
Connector : Red
W
1
R
5
Red - White
3 O
Red - Orange
Gray - Yellow
Gray - Blue
Y G BL
2 6 4
COM
10°C 20°C 25°C 30°C
99 62 50 41
20.4 12.6 10.0 8.0
Checking procedure
Case that product is good
Pointer swings once, and returns
slowly. When performing test
once again under another polarity,
MCC-5070
the pointer should return.
Soldered
surface
Tester rod
–
+
~
2
+
~
–
~
3
~
–
4
~
Service Manual
Resistance value
7.2 ± 0.36
Under 20°C
Position Resistance value
46 ± 3Ω
46 ± 3Ω
46 ± 3Ω
46 ± 3Ω
Under 20°C
40°C 50°C
27 18
5.2 3.5
Resistance value
in good product
1
∞
2
3