page 5
Trouble
3. Power unit fails
to stop when the
hose is removed.
4. Power unit shuts
off during normal
operation, lights on
unit, wall valve and
hose are all red.
5. On NuTone
VX550CC &
VX1040CC units
only, all lights on
control panel flash
when unit is first
plugged in.
Possible Cause
3a.An electrical short has occurred somewhere
in the system.
4a.Debris pail full sensing has been activated.
5a.Low line voltage.
Possible Remedy
3a.A complete check of all wall inlets and power
unit low voltage control lead connections.
Contact your authorized Service Center.
4a.Empty debris pail as described in page 3.
5a.Contact your local Service Center
.
TROUBLESHOOTING GUIDE (CONT’D)
INTERNAL WIRING DIAGRAMS
• VX475CC • VX550CC
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