Toshiba RAS-10SKV-A - Manual (Page 78)

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FILE NO. SVM-07008
1 Electrolytic capacitor 1. Turn OFF the power supply breaker.
(For raising pressure, smoothing) 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 show in
continuity test by the tester.
C12, C13, C14
→
500
µ
F/400V
2 Converter module 1. Turn OFF the power supply breaker.
2. Discharge all three capacitors completely.
3 Check that the normal rectification characteristics are shown in continuity
test by the tester.
11-8-5. Checking Method for Each Part
Case that product is good
Pointer swings once, and
returns slowly. When
performing test once again
under another polarity, the
pointer should return.
No. Part name Checking procedure
Soldered
surface
Heat
sink
IGBT
side
C12 C13 C14
3 Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction temperature
sensor (TS), outdoor heat
exchanger temperature sensor
(TE)
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
TGa : Heat pump model only.
TO, TS, TE : Refer to the TA, TC characteristic table in Indoor
(Refer to Table 10-8-3, No.1).
Temperature
10°C 20°C 30°C 40°C 50°C
Sensor
TA, TC (k ) 105 64 41 27 18
MCC-5009
Diode check
Tester rod
e d
d
e
\
1
~
Resistance value
in good product
50k
Ω
or more
(0
Ω
in trouble)
\
2
~
\
1
~
\
2
~
Mark
2 1
1 2