High Wall, Heat Pump Type
Service Manual
86
Toshiba
10-9.Inspection of the Air Purifier
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Operation c
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Turn off the power breaker once,
and turn on again after 10 seconds.
Does the OPERATION indicator flash?
Turn off the power breaker and remove
CN401 (Micro switch connector).
Short-circuit between [1] and [2] pin
of CN401 at PC side, and turn on the
power breaker after 10 seconds.
1) Check operation while short-circuiting CN401 of the main P.C. board.
2) Perform air purifying operation by the remote controller.
•In this time, check that the remote controller is in status which is shortened by time on
the reactivation prebentive timer and all display indicators go on for approx. 3 seconds
when a signal is received.
(If time on the reactivation prebentive timer is not shortened,
the high voltage is not applied to electrode of the air purifier for approx. 1 hour.)
•While the air purifier operates, check that the fan speed [AUTO] is not displayed.
(Because the power ON/OFF is controlled on the program.)
3) Be sure not to touch the electric dust collector, ionizer or ionized wire unit with human body.
Is there conduction of
micro-switch connector under
OFF status of the micro-switch
(Front panel opened)?
Is there conduction of
micro-switch connector under
ON status of the micro-switch
(Front panel closed)?
Does the indoor fan rotate?
Does the PURE indicator (Blue) or
the FILTER indicator (Orange) go on?
Is DC12V applied
between [1] (Brown/DC 12V) and
(Red/GND) of CN402 of the
high voltage generator?
Is DC12V applied
between [1]+ and [2]–
of CN402 fo the main
P.C. board (MCC5068)?
Micro-switch is stuck
Micro-switch malfunction
To item “Power supply is not turned on”
Replace the main P.C. board (MCC5068)
Replace micro-switch.
Does the PURE indicator
go off within 2 seconds after
it was ON, and does the FILTER
indicator (Orange) go on?
Are the electric dust
collector and ionizer dried?
(Electrode check)
Dry the electric
dust collector
and ionizer.
Is output of the ionizer
approx. 4.0 kV to 6.3 kV?
Are the electric dust
collector/ionizer/ionized
wire units dirty?
Is an abnormal sound
(cracking noise) heard
from the electrode?
Referring to the right figure, check the
high-output voltage of the air filter unit.
(NOTE)
Use an exclusive high voltage tester;
otherwise the tester may be broken.
No trouble
Replace the main P.C. board (MCC5068).
Replace the high-voltage generator.
To item “Only indoor fan does not operate”
YES
YES
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
YES
NO
YES
YES
NO
NO
YES
NO
NO
( )
Refer to items, cleaning and check
for the electric dust collector/ionizer/
ionized wire units.
When the ionized wire is
disconnected or when dirt is
not cleaned even cleaned,
replace each unit.
• Conduction check of micro-switch
Tester
• How to check output of the air purifier
<Caution on High Voltage!!>
High-voltage tester
Heat exchanger
Ion electrode
Push the switch
→
ON
Release the switch
→
OFF
Be sure not to come
to contact to the gray
part or not to touch
the ionized cables.
+00A08-010_01EN_SVM_HighWallHeatPump.book Page 86 Wednesday, March 4, 2009 11:22 AM
