Question about Broan-NuTone 273603 Kitchen Hood

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I have a Broan 2736 Eclipse downdraft blower system. When I push the button the downdraft rises but then immediately goes back down

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Gail was spot on. That worked for me until the unit would go up and/or down on its own. The problem was traced to the double microswitch called the 'Lower Switch Bracket Assembly' ($24. thru Lowes ). To replace these switches is not for the faint of heart as it is deep within the assembly. A good weekend mechanic can look at the exploded parts diagram and see what / where. Found grease residue on- and slightly within- the microswitchs due to Broan not properly design shielding and protecting these critical switches from grease. Did not find any ghosts, however.

Posted on Sep 12, 2013

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Posted on Jan 02, 2017

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SOURCE: Blower does not work and the vent does not rise

hum is the motor trying to go. check no packing or other foreign object stuck in the fan

Posted on Mar 28, 2007

shaggyrat
  • 1224 Answers

SOURCE: Downdraft blower quit working

replace whole unit thats roughly what the whole unit costs 157.00 just a little secret there they dont tell you cause they mark up the prices i worked for the company that sold and installed this equipment you also remember tax

Posted on Jun 01, 2008

  • 1 Answer

SOURCE: 30" Viking downdraft

After 11 years of use, the same problem just happen a few days ago - fan keeps running, doesn't respond to the on/off switch. Also cannot reset filter alert. As far as I can tell the entire switch panel isn't working. Or worse, shorted out. Might have to replace the ribbon and some switches.
For example the switches can be found at AllVikingParts.com For example --> http://www.allvikingparts.com/Button_Switch_Assy_p/pv300182.htm
There's a another thread on this forum: http://www.fixya.com/support/t410261-viking_downdraft_ventilator_electrical
I'll post the exact solution as soon as I have it figured out completely.

Posted on Jul 08, 2010

  • 1116 Answers

SOURCE: Broan 273003 30" Downdraft -

When you made the adjustment the adjustment for the switch membrane was adjusted to much and is in constant contact with the switch membrane. Therefore it cannot retract. Remove the switch cover and readjust the position switch bracket so the activating switch just barely makes contact with the underside of the switch membrane. Anything more than this will cause it to stay i the up position.

Posted on Jul 02, 2011

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In my case, I pushed the button, the housing goes fully up, then right back down. I removed and disassembled the unit for cleaning. After Assembly I located two microswitches that cause the extension moror to stop at the top and at the bottom of the swing. In my case, the inertia of the motor caused the unit to "Coast" thru the top of the stroke and continue back down. I bent the outer 1/3 of the metal tabs that depress the microswitches so that the unit stopped rising a wisker sooner and no longer goes back down without pushing the button. The same coasting theroy may apply at the bottom of the stroke. The motor that runs the up and down motion is controlled by three switches, the two limit switces plus the momentary push button switch. If you don;t need to completely remove your unit for cleaning, the microswitchs can be located by removing the fan housing and looking up from inside the cabinet (under the stove) on the right side. IN my case, there was 10 years of goop to be removed.

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replace whole unit thats roughly what the whole unit costs 157.00 just a little secret there they dont tell you cause they mark up the prices i worked for the company that sold and installed this equipment you also remember tax

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