Toshiba RAS-M13PKVP-E - Page 92

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No. Part name Checking procedure
4 Outdoor temperature sensor (TO),
discharge temperature sensor
(TD), suction temperature sensor
(TS), outdoor heat exchanger
temperature sensor (TE), A
room gas side temperature
sensor (TGa), B room gas side
temperature sensor (TGb)
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
Temperature
Sensor
TD (k7)
TGa, TGb (Cooling only)
TO, TE, TS (k7)
TGa, TGb (Heat Pump) (k7)
10°C 20°C 25°C 30°C 40°C
100 64 41 27 18
20.6 12.6 10.0 5.1 3.4
20.5 12.5 10.0 5.3 3.6
5 4-way valve coil
(Model :STF)
Measure the resistance value of winding by using the tester.
Resistance value
1435 ± 144 7
Under 20°C
6 Pulse motor valve coil
(Model : CAM-MD12TF-12)
Measure the resistance value of winding by using the tester.
COM
24
Y
W
BL
1
R
6
O
3
Position
Red - White
White - Orange
Red - Yelloow
Red - Blue
Resistance value
42 to 50 7
Under 20°C
11-10-5. Checking Method for Each Part
No. Part name Checking procedure
1 Electrolytic capacitor
(For boost, smoothing)
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.
MCC-5009
Soldered
surface
Heat sink IGBT side
C12 C13 C14
Case that product is good
Pointer swings once, and returns slowly.
When performing test once again under
another polarity, the pointer should return.
C12, C13, C14 m 760μF/400V
2 Diode block 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 rectifi cation characteristics.
Resistance value
in good product
∞
Tester rod
+–
~
2
~
3
~
2
~
3
–
4
~~
~
+–~
1
12 3
(DBO1)
4
4
23
+
1
+
–
10 to 20 7 when the multimeter probe is reversed