If the sound continues, be sure the fan is centered and not rubbing or chafing against the side of the duct thus causing the noises. When a strange sound comes from the range hood fan, most of the time the fan is simply covered in grease and thus causing the noise. Fan On Range Hood Makes Loud Or Humming Noises: Clean and or replace the fan motor if found to be faulty after testing it with a meter.ĥ. Another issue might be the fan motor and or fan blades may be thick with grease making it hard for it to suck the air outward. Check the duct with a flashlight to be sure the inside is not blocked. If the filter is clean the other issue might be a grease blockage may be restricting the airflow. If this is the case, remove the filter and clean the range hood filter in hot soapy water with grease removing soap. If you have turned the fan setting to HIGH and the air is not being cleared away up and into the vent, first check the filter that the air enters into to be sure it is not extremely clogged with grease. Range Hood Fan Does Not Clear Smoke (Air) From Area: If faulty, replace the motor with an OEM part to be sure of proper operation.Ĥ. Use a meter to find out if the range hood fan motor is faulty. If the fan switch is in working order, check the fan motor. If the fan on the range hood does not come on, check that the fan switch is in working order. ![]() The control board (on some range hoods) may be the issue of “no lights” so test the board if applicable. Check the switch with a multimeter to be sure it is at fault before replacing. If the switch is faulty, replace the range hood light switch. If the light bulbs are working, check the switch to be sure it is in working order. If the lights on the range hood do not come on, check that the light bulbs are not burnt out.
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