Problem Diagnosis Chart - Sanyo abc-vw24 Service Manual

Problem Diagnosis Chart

Will not operate
manually
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.
No
After about 9 seconds of manual operation,
does the unit switch off?
No
Is there AC100V between the CN301 on Control
circuit A (power)
Yes
Is there voltage of about DC 5V between 8 (+) –
9 (-) of CN302 on Control circuit A (power)?
Yes
Is there a display?
(Is the airflow speed display lamp lit?)
Yes
Is there voltage of about DC 5V between 8 (+) –
9 (-) of CN302 on Control circuit A (power) ?
Yes
Is there voltage of about DC 15V between
white (+) – black (-) of motor connector (CN303)?
Yes
Motor replacement
Motor cord connection inspection
*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.
Yes
Yes
No
No
No
No
No
- 12-
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 circnit B (sensor)
inspection/ replacement
Control circuit C (switch) CN601
connection check
ABC-VW24