page 4
Trouble
1.
Loss or
decrease of
vacuum occurs.
2
. Power unit does
not start, or
shuts off during
normal operation
with no LED
showing red or
illuminated.
Possible Cause
1a.
Debris pail is completely full.
1b.
Obstruction in the hose. A blockage in the hose
can be determined by inserting the hose into any
wall inlet and, while power unit is running, check
each additional inlet for normal suction by holding
the palm of your hand over the open inlet. If normal
suction is felt at all other inlets, insert the hose
into a second inlet. If the blockage still exists it is
located in the hose. However, if the blockage
does not occur when the hose is changed, the
blockage is probably located in the tubing system
leading to the original inlet.
1c.
Obstruction in the tubing system inside
the walls.
1d.
Wall inlet cover not properly sealed.
1e.
Exhaust tubing or vent clogged.
2a.
Defective inlet. Check other wall inlets.
2b.
Thermoprotector has been activated OR there is
a tripped circuit breaker on the unit.
2c.
Blown fuse or tripped circuit breaker on house
electrical panel.
2d.
Defective hose.
2e.
Microprocessor lockup.
NOTE
:
This apply only to NuTone VX550CC
& VX1040CC.
2f.
Low line voltage.
Possible Remedy
1a.
Empty debris pail as described on page 3.
1b.
Insert handle end of hose into utility valve at
power unit. Turn unit on. This will reverse normal
air flow through the hose and dislodge any clogs.
1c.
Insert hose end into any inlet with power unit
running, place the palm of your hand over the
opposite end of the hose. When you can feel the
suction increase, hold your hand over the hose
end for a few seconds and then quickly remove
your hand. This procedure repeated several
times should clear the obstruction. If the blockage
is not cleared, contact your nearest Service Center.
1d
.Check all wall inlet covers to be sure they are
closed and sealed tightly.
1e.
Inspect and remove any blockages.
2a
. Replace defective wall inlet.
2b.
Turn unit off for 20 minutes then plug unit back in.
If unit does not start, look for the tripped circuit
breaker behind the unit, a white button has
popped up, push it back to reset it. If circuit
breaker trips again, unplug your unit and contact
your local Service Center.
2c
. Replace fuse or reset circuit breaker on house
electrical panel.
2d.
Replace hose as required.
2e.
1) Push
Reset
button while unit is engaged OR
2) Unplug unit completely for 60 seconds.
2f.
Contact your local Service Center.
TROUBLESHOOTING GUIDE
Read before calling Service Center.
