Installing JED8230ADB Cooktop Grill with down-draft exhaust

You first need to remove the unit from its installation. Start by disconnecting the exhaust fan from the ductwork. Then push the cooktop up.

To get at the switch you need to remove the top by taking off only the top row of screws all around the unit and also at the top of the down draft cavity (the down draft cavity is where the grease guard mesh is)

its would be best to install a damper
whether auto matic
or manuely operated
this is a common problem for the down draft
ive seen some people install things similar
to dryer vent louvers,
but check you exhaust area and still if you can block direct draft
but dont block it so that it cannot exhaust properly

I had the same problem. Mine was caused by liquid seeping into the infinite switch (the switch that gets rotated by the knob to set burner temperature). This caused one of the live wires to short to ground within the switch. Bad Design IMHO. Replacing the switch fixed the problem (you can get replacement parts at Searspartsdirect.com - search using the cooktop model number).
You first need to remove the unit from its installation. Start by disconnecting the exhaust fan from the ductwork. Then push the cooktop up.
To get at the switch you need to remove the top by taking off only the top row of screws all around the unit and also in the down draft cavity (the down draft cavity is where the grease guard mesh is)

I had the same problem. Mine was caused by liquid seeping into the infinite switch (the switch that gets rotated by the knob to set burner temperature). This caused one of the live wires to short to ground within the switch. Bad Design IMHO. Replacing the switch fixed the problem (you can get replacement parts at Searspartsdirect.com - search using the cooktop model number).
You first need to remove the unit from its installation. Start by disconnecting the exhaust fan from the ductwork. Then push the cooktop up.
To get at the switch you need to remove the top by taking off only the top row of screws all around the unit and also in the down draft cavity (the down draft cavity is where the grease guard mesh is)

Turn off the circuit breaker to the cooktop. Verify by making sure the burners/fan do not come on. Disconnect the exhaust fan (underneath the cooktop) from the ductwork by removing the tape that joins it. While you are underneath the cooktop, open the junction box. Label the four wires that are joined so that you will be able to connect them later. Then disconnect the four wires. Remove the metal sheating that connects to the junction box (there is a nut on the inside of the junction box that you loosen. Pull out all the supply wires (from the mains) from the junction box. Then push the cooktop up and out and lay it flat on a table with the flat side down.
Take off only the top row of screws all around the unit. Rotate the unit so that you can get to the down draft cavity (the down draft cavity is where the grease guard mesh is). Remove the two center screws. Then pull the black top off.

For an exploded view of the unit check out
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=47639&diagram_id=681565#d681565

Try a bigger inlet pipe sounds like pipe too small for load .

you definalty should feels air moving, providing hte unit is ON. when not in use there should be mo draft( minimal at best) if there is still a draft when unit is off, i would check where it exhausts outside, there should be flap tha closes when not inuse

the only way is to block off/check the flapper., if your not going to use for the winter you can disconnect the vent from under the cabinet temporaily and close off there till you can gain access to check outside grill

Hello
I have the one with the 4 burners and the grill, and when the grill in on the fan has to come on, and it does automaticly, but once you finish with the grill you have to change it back to stove mode by putting the 2 burners back or the fan will allways go on when you turn the switch. It is a safety regulation for the fan to be on with the grill to avoid the fumes......I know I hate that too.
Hope this help

Eddie Rentas
Tupper Lake NY

Please don't buy another one!!! This is the most poorly designed cooktop made. You would be much happier with another brand. If you really want a treat try Thermador. I had a Jenn Air installed on an outside wall and vented directly outside, It still set off the smoke detector constantly. Very hard to clean., Very poor burners both open coil and smooth top.

If you're talking about a downdraft style cooktop, you will just need to measure the discharge vent diameter and shape and match that up. Not all are the same shape but most are 6" diameter