Followed instruction & installed brand new Viking 3048SS range hood. All switches work except fan switch. When plugged fan directly to outlet, it worked. The exterior fan was installed on roof with 10in duct work to hood. Called Viking. Authorized Viking tech came to inspect and suggested installation is incorrect. (charged about $200 for a 5min inspection!) Hired an electrican to re-install. Same problem. Suggested switch is bad. Need help here!
I did some more troubleshooting and figured out how to get the plate off that houses the switches. I disconnected the fan switch and created a safe electrical by-pass. I re-connected the main power supply and sure enough, the fan worked. Issue = defective switch. Currently looking to order replacement. Problem solved.
There is the on off switch and the blower control that controls the speed of the fan. It is more than likley the blower control that would need replaced.
There could also be a wire disconnected in the hood.
SOURCE: Brand new Viking 3048SS hood - fan switch not working
think i would call viking back and ask for refund of inspection fee and go by the bad switch scenerio the electrician said new fan that would be considered flaws in workmanship in most states dont know where you are located but pretty much same anywhere most inspectors for these companies always try to blame problems off on installers hold your ground and make them fix it and refund that" inspection " fee I've been doing electrical work for several (20+) years it takes longer than 5 minutes to troubleshoot something like that good luck
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