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16
Troubleshooting
DANGER: Turn off the power circuit breaker or the power switch on the junction box before performing
maintenance. Touching circuitry inside the range hood while it is energized may result in serious injury or
death.
Problem Solution
The range hood does not operate.
- Check that the power supply cable and all electrical wiring are properly
connected.
- Check that the power is turned on at the junction box or circuit breaker.
- Check that the wiring between the switch control and the control board are
connected properly.
The range hood vibrates when the fan is operating.
- Check that the range hood has been secured properly. Tighten into position,
if necessary.
- Check that the motor is secured in place. If not, then tighten the motor in
place.
- Check that the fan is not damaged. If so, replace the fan.
The fans seem weak.
- Check that the duct size used is at least 177 mm (7 in) round. The range
hood will not function efciently with insufcient duct size.
- Check that the duct is not clogged with debris and the tight mesh on the wall
cap, if applicable, isn’t restricting air ow.
- Check that the damper unit is opening properly.
- Check that no birds or animals have nested in the duct.
The lights work, but the fan is not spinning, is
stuck, or is rattling.
- The thermal protection system detects if the motor is too hot to operate and
shuts the motor down. In this case, the motor will function properly after the
thermal protection system cools down (after approximately 10 min).
- Check that the fan isn’t jammed or scraping the bottom.
- If nothing else works, the motor may be defective or seized. If so, replace the
motor.
The range hood is not venting properly.
- Check that no birds or animals have nested in the duct.
- Check that the distance between the cooktop and the bottom of the range
hood is between 458 mm (18 in) and 710 mm (28 in).
- Check that duct work follows all requirements.
Use round metal duct work
with a uniform diameter of 177 mm (7 in). The length of duct work must not
exceed
35 ft (10.7 m). Reduce the length of duct work and the number of
elbows if necessary. Ensure that all joints are properly connected, sealed,
and taped.
- Check that the duct does not open against the wind.
- Ensure that the power is on high speed for heavy cooking.
- Close all windows nearest to the range hood to eliminate sudden air gusts.
- To enhance the performance of the range hood, open slightly a window on
the opposite side of the house where the range hood vents outdoors.
A light does not work.
- Check to see if light bulb is burnt. If so, replace.
- Check the light bulb to see if it is loose. If so, tighten.
- Remove the problem bulb and insert one you know is working. If the properly
functioning light does not come on, the problem may be the light assembly.
Have the light assembly serviced or replaced.
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