Sanyo abc-vw24 Service Manual page 15

Problem Diagnosis Chart
Abnormal noise/
large vibration
Is the shape of the fan distorted?
Yes
Turn the fan by hand
Does the fan hit anything?
Yes
Remove the fan and
turn the shaft
Does the shaft turn smoothly?
Yes
Control circuit A (power)
replacement or Control circuit B
(sensor) replacement
Sensitivity adjustment
does not work
Reconnect power
Sensor sensitivity adjustment
Are the knob and odor sensor
lever assembled correctly?
Yes
Control circuit B(sensor)
inspection/replacement
No
No
Fan replacement
No
Motor replacement
No
Assemble the sensor
lever and knob correctly
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Smoke, rubbish, etc.,
cannot be removed
Are the prefilter and filter
attached properly?
Yes
Are the prefilter and filter
not dirty?
Yes
Operate manually
Does the motor turn?
Yes
No problem
* Replacement filter
ABC -FAH94A
ABC-VW24
No
Attach the prefilter
and filter
No
Prefilter cleaning and
filter replacement
No
Will not operate
manually