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
AE0005A
WHITE
WHITE
BLACK
BLACK
GREEN
GREEN
120 VOLTS
MOTOR
CONTROL
YELLO
W
YELLO
W
THERMAL
PROTECTOR
CONTROL
BOARD
BLUE
BLUE
AE0027A
RED OR WHITE
RED OR WHITE
RED OR WHITE
BLACK
BLACK
BLACK
BLACK
BLUE
GREEN
GREEN
GREEN
GREEN
YELLO
W
YELLO
W
MOTOR
MOTOR
CONTROL
CONTROL
BOARD
THERMAL
PROTECTOR
240 VOLTS
BLUE
THERMAL
PROTECTOR
BLUE
BLUE
• VX1040CC
