Troubleshooting - Vissani QR254 Series Owner's Manual

Troubleshooting

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
The range hood does not operate.
The range hood is very loud or vibrates when the fan
is operating.
The fan seems weak.
The lights work, but the fan is not spinning, is stuck,
or is rattling.
The range hood is not venting properly.
Light(s) do not work.
QR254 (SERIES)
Solution
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 of the control switch is properly connected.
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 blade is not damaged or warped and that it is not hitting
anything or causing the range hood to vibrate. If so, replace the fan blade.
Check that the duct size used is at least 7 in (177 mm) round. The range hood
Check that the duct is not clogged with debris and the tight mesh on the wall
Check that the damper unit is opening properly.
Check that no birds or animals have nested in the duct.
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.
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 within the previously recommended distance.
Check that duct work follows all requirements. Use round metal duct work with
a uniform diameter of 7 in (177 mm). 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.
Check to see if light bulbs are damaged. If so, replace.
Check the light bulbs to see if they are 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.
20