Справочник Пользователя для Toshiba RAS-13YAV-E

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Discharging position 
(Discharging period 
10 seconds or more)

Plug of 
soldering iron

Inverter cover

P. C. board 
(Soldered surface)

MCC-808

The pulse modulating circuits are mounted to both
indoor and outdoor units.  Therefore, diagnose
troubles according to the trouble diagnosis proce-
dure as described below. (Refer to the check points
in servicing written on the wiring diagrams attached
to the indoor/outdoor units.)

1

First Confirmation

40

2

Primary Judgment

41

3

Judgment by Flashing LED of Indoor Unit

42

4

Self-Diagnosis by Service Check Remote

43

Controller

5

Judgment of Trouble by Every Symptom

46

6

How to Check Simply the Main Parts

53

A large-capacity electrolytic capacitor is used in the
outdoor unit controller (inverter). Therefore, if the
power supply is turned off, charge (charging voltage
DC280V) remains and discharging takes a lot of
time. After turning off the power source, if touching
the charging section before discharging, an electri-
cal shock may be caused. Discharge the electrolytic
capacitor completely by using soldering iron, etc.

(1) Remove the inverter cover (plating) by opening

four mounting claws.

(2) As shown below, connect the discharge resis-

tance (approx. 100

Ω

40W) or plug of the solder-

ing iron to voltage between + – terminals of the
C14 (“CAUTION HIGH VOLTAGE 320V” is
indicated.) electrolytic capacitor (500µF/400V)
on P.C. board, and then perform discharging.

Confirm that the power breaker operates (ON)
normally.

Confirm that power voltage is AC 220–230–240 ±
10%. If power voltage is not in this range, the unit
may not operate normally.