Haier IT9001, Service Manual

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13
6.
Troubleshooting
Failure Root cause Corrective action
No
power 1. Not plug-in or poor plug-
in.
2. Power socket is no
power.
3. Power supply dose not
connect with fuse or fuse
broken.
1. Plug-in perfect.
2. Connect with power supply or
contact electrician for after
service.
3. Replace fuse or call
electrician for after service.
No work 1. Power supply does not
work or voltage is not
stable.
2. No operation on fan
speed button.
1. Make sure power supply
works normally or call
eleclltricial for after service.
2. Press on fan speed button.
Light not
on
1. No operation on light
button.
2. The lamp is burnt down.
1. Press on light button.
2. Replace lamp (please call
service center)
Main
body
vabration 1. Main body mounting is
not stable.
2. Defective installation for
fan.
3. Defective fan
1. Make sure main body
mounting is stable enough.
2. Install fan correctly.
3. Replace fan (please call
service center
Poor
suction 1. When use hood, the
kitchen door and window
are openned too much or
close directly.
2. Hood installation height
is out of the range.
3. Hose is too long or too
much bend of hose.
1. Open or close door or window
to adjust suction.
2. Adjust hood installation height
as user manual.
3. Reduce length and bend of
hose.
4. Enlarge common venting hole
diameter to make sure the
damper of the hood can be
closed exactly.