Toshiba RAS-B13GKVP-E Troubleshooting, How to Check Whether the Air Purifier is Good or Not

11-7. Troubleshooting

11-7-1. How to Check Whether the Air Purifier is Good or Not

Primary check

Turn off the power breaker once, and turn on again after 10 seconds.

Does the OPERATION indicator flash?

YES

Turn off the power breaker and remove CN34 (Micro switch connector). Short-circuit between 1 and 2 pin of CN34 at PC side, and turn on the power breaker after 10 seconds.

Is DC12V applied

between 1 (Red/DC12V) and (Brown/GND) of CN1 of the high-voltage generator?

YES

Is there conduction of

micro-switch connector under OFF status of the micro-switch (Front panel opened)?

NO

Is there conduction of

micro-switch connector under ON status of the micro-switch (Front panel closed)?

NO

NO	Is DC12V applied	NO
	between 1 (+) and 2 (–)
	of CN33 of the main
	P.C. board (MCC5020)?
	YES
YES	Micro-switch is stuck

NO

Micro-switch malfunction

To item “Power supply is not turned on”

Replace the main P.C. board (MCC5020)

Replace micro-switch.

• Conduction check of micro-switch

YES

1)Check operation while short-circuiting CN34 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 preventive timer and all display indicators go on for approx. 3 seconds when a signal is received.

( If time on the reactivation preventive 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 the human body.

Push the switch ON → ON

Release the switch

→OFF

Tester

Operation check

Does the indoor fan rotate?

YES

Does the PURE indicator (Blue) or the FILTER indicator (Orange) go on?

YES

Does the PURE indicator

go off within 2 seconds after

it was ON, and does the FILTER indicator (Orange) go on?

	YES
Are the electric dust		NO
collector and ionizer dried?
(Electrode check)
	YES

NO

NO

Is DC-5V to DC-10V

applied between

NO 4 (Brown/Negative voltage) NO and 2 (Brown/GND)

of CN33 of the main P.C. board?

YES

Dry the electric dust collector and ionizer.

To item “Only indoor fan does not operate”

Replace the main P.C. board (MCC5020).

•How to check output of the air purifier <Caution on High Voltage!!>

Collector output

GND

Referring to the right figure, check the	Be sure not to come		Ionizer
high-output voltage of the air filter unit.
	to contact to the gray		output
(NOTE)
	part or not to touch
Use an exclusive high voltage tester;
	the ionized cables.	High-voltage tester
otherwise the tester may be broken.

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.

YES

YES

Is output of the ionizer approx. 4.0 kV to 4.8 kV? Is output of the collector approx. 3.0 kV to 3.8 kV?

YES

Are the electric dust

collector/ionizer/ionized wire units dirty?

Is an abnormal sound (cracking noise) heard from the electrode?

NO

Replace the high-voltage generator.

NO

No trouble

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