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Official DCS Downdraft ventilation system parts

Official DCS downdraft ventilation system parts

You depend on your DCS downdraft ventilation system to keep the air in your kitchen clean and safe. DCS downdraft ventilation systems are designed to last for many years but component failures can occur at any time. When components break on your DCS downdraft blower, find the replacement parts you need to fix the ventilation system at Sears PartsDirect.

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Downdraft Ventilation Systems
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Troubleshooting your DCS downdraft ventilation system when it goes up and down continuously

Problems with the vent limit switches or the up/down activation switch can cause the downdraft vent to move up and down continuously.

Limit switches detect when the vent reaches the upper and lower travel limits. If one of the limit switches breaks, the vent will raise and lower continuously. Disconnect electrical power to the downdraft vent and test continuity through the limit switches using a multimeter. Replace a limit switch if you measure the same continuity through a limit switch when the switch is activated and deactivated.

If the limit switches are okay, check the position of the up/down activation switch with power to the downdraft blower still disconnected. The vent must be in the raised position to check the activation switch, so lift the vent if it's in the down position and tilt it slightly so it stays raised. Remove the switch cover from the right end of the vent. Check the position of the up/down activation switch plunger. If the up/down button pad constantly presses down the plunger, loosen the up/down activation switch mounting screws and move the switch down until the bottom of the button pad membrane barely touches the plunger. Tighten the up/down activation switch mounting screws and replace the switch cover.

If the up/down activation switch position is okay, check continuity through the switch using a multimeter with electrical power disconnected from the downdraft vent. If the meter measures near 0 ohms of resistance with the switch plunger released, replace the up/down activation switch because it's letting current flow to the vent gear motor constantly, making the vent constantly move up and down. The up/down activation switch should stop current flow to the vent gear motor when the up/down activation switch plunger is released.

Replacing the up/down button pad on your DCS downdraft ventilation system

  • Unplug the power cord from the wall outlet.
  • Grasp one corner of the up/down button pad and peel the pad off from the top cover.
  • Clean adhesive and residue from the mounting surface using rubbing alcohol.
  • Peel off the adhesive backing on the new up/down pad. Center the up/down button pad above the switch and press down around the outer edges.
  • Reconnect the power cord.

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