FILE NO. SVM-06010
– 60 –
9-8-2. How to Check Whether the Minus Ion Generator is Good or Not
• How to check output of minusion
<Caution on High Voltage!!>
No trouble
Does the plasma lamp (Blue) or
the filter lamp (Orange) go on?
Replace the main P.C. board (WP-008).
1) Check operation while short-circuiting CN34 of the main P.C. board.
2) Perform air purifying operation by the remote control.
•
In this time, check that the remote control is in status which is shortened by time on
the reactivation preventive timer and all display lamps 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 electrode with the human body.
( )
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.
Does the electrode
output approx.
−
6kV?
Referring to the right figure, check the
high-voltage output of the air ionizer.
In this time, peel the thermal insulator, and attach
it to the original position after check operation.
NOTE :
Use an exclusive high voltage tester; otherwise
the tester may be broken.
Does the plasma lamp
go off within 2 seconds after
it was ON, and does the
filter lamp (Orange) go on?
Does the indoor fan rotate?
Micro-switch is stuck
Micro-switch malfunction
Is there conduction of
micro-switch connector under
ON status of the micro-switch
(Front panel closed)?
Is there conduction of
micro-switch connector under
OFF status of the micro-switch
(Front panel opened)?
Is DC12V applied
between
1
(Red/DC12V) and
2
(Brown/GND) of CN1 of the
high-voltage unit in the air purifier?
Does the OPERATION lamp blink?
Turn off the power breaker once,
and turn on again after 10 seconds.
• Conduction check of micro-switch
Replace micro-switch.
Operation check
Primary check
YES
YES
NO
YES
NO
NO
YES
NO
YES
YES
YES
NO
NO
NO
NO
NO
YES
Replace the power P.C. board
(WP-008) or the housing assembly.
Integrated
power supply assembly
Push the switch
ON
Releaes the switch
OFF
ON
Tester
GND
Electrode
High-voltage
unit
High-voltage tester
To item Power supply is not turned on
To item Only indoor fan does not operate
To item How to check whether
the air purifier is good or not