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3 Troubleshooting Guide
CONDITION
Motor fails to rotate
Motor runs but there is no suction
Noise or vibration
Motor does not change power
(runs always at full speed)
Motor runs irregularly
CHECKPOINT
Power supply cord
Fuse of P.C.B. Ass'y
(250V, 13A)
Motor continuity
ON/OFF Switch
Triac (Inside of P.C.B.)
P.C.B. Ass'y
Hose or Suction inlet
Dust box unit
Upper filter Unit
Secondary filter
Motor fan
P.C.B. Ass'y
P.C.B. Ass'y
METHOD OF INSPECTION
Check power supply cord continu-
ity.
Check fuse continuity.
Check the conduction between the
terminals of the motor.
Check continuity across switch
connections
Check if there is any problem in the
triac.
(Please refer to how to check the
triac.)
Check the internal parts for any-
thing unusual. (burn-out, melt-
down, etc.)
Check if there is any blockage in
the hose or suction inlet.
Check whether or not the dust box
unit is full of dust or dust is clogged
in the upper filter unit or secondary
filter.
Check dust accumulated in motor
fan (it could happen if the vacuum
cleaner has been used without cen-
tral filter).
Examine the triac in the P.C.B.
Ass'y and check whether or not T1
and T2 are short-circuited.
Check possible bad contact of
P.C.B. Ass'y.
5
CAUSE / REMEDY
If there is no continuity, replace the
cord reel patition unit.
If there is no continuity, replace
P.C.B. Ass'y.
If there is no continuity, replace the
motor.
If there is no continuity, replace
P.C.B. Ass'y.
If it has any problem, replace the
P.C.B. Ass'y.
If anything unusual is found,
replace the P.C.B. Ass'y with new
one.
If there is any blockage, remove it.
If the dust box unit is full of dust,
then throw away the dust.
If dust is clogged in the upper filter
unit or secondary filter, then throw
away the dust and clean or replace
the upper filter unit or secondary fil-
ter.
If there is accumulated dust in the
motor fan, replace the motor and
check filter condition. (never try to
dismantle the motor fan)
If they are short-circuited, then
replace the P.C.B. Ass'y.
Replace P.C.B. Ass'y.
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