Sharp FU-28H-S, Руководство по обслуживанию

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22
FU-28H-S
TROUBLESHOOTING GUIDE
Always use the designated parts when replacing parts.
Service of the PWB ass'y
The electrical circuit is composed of the Control PWB ass'y, Power supply PWB ass'y, Display PWB Ass'y and the Switch PWB ass'y.
No.
1
2
3
4
5
6
7
8
9
Problem
The purifier will not operate.
The silent lamp is flashing
and the purifier will not
operate.
The auto operation lamp is
flashing.
The purifier is making an
unusual noise.
Sound is intermittently
audible coming from the
plasmacluster ion generation
unit.
The air purifier's ability to
collect dust has deteriorated.
The air coming from the air
outlet smells bad.
The remote control doesn't
work.
The air purifier resets itself
immediately (and stops
operating).
Cause and symptoms
Faulty wiring.
Fan feels unusually heavy when rotated
manually (motor f PWB current fuse
burned out).
Power supply PWB current fuse (FUSE)
burned out.
Power supply PWB current fuse (FUSE)
burned out and varistor (VRS1) failure.
Faulty PWB.
Broken connection in power cord.
Faulty fan motor.
The motor harness is not properly inserted
into PWB.
Faulty PWB.
Faulty PWB.
Faulty motor.
Faulty motor mount.
Faulty fan shape.
Faulty fan mount.
Changes in room humidity.
Filter replacement is overdue.
The pre-filter has become clogged.
There is an obstruction near the air inlet or
outlet.
Undesirable odors that have accumulated in
the antibacterial HEPA filter are being
released.
The air purifier is being used near a light that
uses an inverter or lighting is old and is
flickering.
The air purifier is being in a location where it
is exposed to direct sunlight.
Faulty remote control.
Faulty PWB.
There are no batteries in the remote control.
The remote control's batteries are dead.
Faulty PWB.
Solution
Check whether connectors are
inserted properly; repair; replace.
Replace motor and PWB.
Inspect the motor (rotate the fan
manually and replace motor and
PWB if fan feels heavy).
Replace PWB.
Replace.
Replace.
Replace.
Check whether the connector is
inserted properly; repair; replace.
Replace.
Replace.
Replace.
Repair.
Replace.
Repair or replace.
This does not indicate a problem
with the air purifier. Please advise
customers that while the sound may
grow louder or softer depending
on the humidity of the room where
the air purifier is being used, the
plasmacluster ion effectiveness
remains the same.
Replace the filters.
Clean the pre-filter.
Move the air purifier to a different
location.
Replace the antibacterial HEPA
filter (there is a charge for this
replacement).
Move the air purifier to a different
location or replace the light.
Move the air purifier to a different
location.
Replace.
Replace.
Load batteries into the remote
control.
Replace the remote control's
batteries.
Replace PWB.