English 7
Service and Maintenance
Before Calling Customer Service
Troubleshooting
Use the suggestions in the table below before calling for service to avoid service charges.
PROBLEM
SUGGESTED SOLUTION
Noise during operation
Some noise is normal due to vibration and air movement.
Excessive noise could indicate one of the following:
a) ductwork is too small / undersized
b) ductwork is too large / oversized
c) ductwork is loose
d) transition is too small or is loose
e) wood screws are not fully tightened
f)
loose screws in trim parts, etc.
Check
Installation Manual
to verify that ductwork is the proper size. Tighten screws.
Noise when unit is off
a) Backflow flap on outside of duct wall cap moves with the wind. This is normal.
Lights and fan blower do not
work
a) Hood circuit breaker may be tripped. Reset breaker.
Fan blower does not work
a) Power supply is insufficient.
b) Electrical wiring is incorrectly connected.
See the
Installation Manual
for more information.
Lights hum
a) A slight hum is normal.
Lights do not work but the
motor is working
a) Halogen lights are blown.
See “Halogen Light Replacement” on page 8.
b) The halogen lights are loose. Tighten the halogen lights.
Motor does not work but the
lights are working
a) The thermally protected system detects if the motor is too hot to operate and
shuts the motor down. The motor will function properly after the thermally
protected system cools down.
See “Heat Sensor Protection” on page 5.
Hood trips breaker
a) Electrical wiring is incorrectly connected.
b) Circuit is not sufficient.
See the
Installation Manual
for more information.
The hood is not venting
properly.
a) The hood may be too high from the cook top.
b) The hood may not be centered above the cook top.
c) Make up air not sufficient.
d) The wind from opened windows or opened doors in the surrounding area is
affecting the ventilation of the hood. Close all the windows and doors to
eliminate the outside air flow.
e) Blockage in the duct opening or ductwork. Remove all blockage from the
duct-work or duct opening.
f)
Duct length too long, too many elbows, “back to back” elbows, or too small
roof or wall cap, will all cause issues with air draw.
See the
Installation Manual
for more information.
Table 2: Troubleshooting
Summary of Contents for PROFESSIONAL HPCB36NS
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