Will not operate
manually
*An inclination sensor (S101) is embedded in
Control circuit B (sensor) so please conduct
operational checks and voltage measurements
while the equipment is positioned vertically.
Check
Is the electricity cable plugged into the mains?
Is mains electricity from AC Local voltage ±10%?
When the unit is switched on, the
automatic (green) and clean sign (green) are
lit momentarily, but the unit does not operate.
After about 9 seconds of manual operation,
does the unit switch off?
Is there AC100V between the CN301 on Control
circuit A (power)
Is there voltage of about DC 5V between 8 (+) –
9 (-) of CN302 on Control circuit A (power)?
Is there a display?
(Is the airflow speed display lamp lit?)
Is there voltage of about DC 5V between 8 (+) –
9 (-) of CN302 on Control circuit A (power) ?
Is there voltage of about DC 15V between
white (+) – black (-) of motor connector (CN303)?
Motor replacement
Motor cord connection inspection
Control circnit B (sensor)
inclination sensor inspection
Motor cord connection inspection
Motor replacement
Power cord inspection/
replacement
Control circuit A (power)
inspection/ replacement
Control circuit C (switch) CN601
connection check
Control circuit C (switch) CN601
connection check
Control circnit B (sensor)
inspection/ replacement
Yes
Yes
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Problem Diagnosis Chart
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12
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ABC-VW24
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