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If you measure no continuity through the up/down activation switch when you press the button to raise the vent, replace the activation switch because it's not allowing current to flow to the vent gear motor when you press the up/down button pad. If the up/down button pad is okay and the up/down activation switch is positioned properly, disconnect power to the downdraft blower and check for continuity through the up/down activation switch using a multimeter.

Replace the up/down button pad if it's not activating the up/down activation switch plunger when you press the button pad. If the up/down activation switch position is okay, check the up/down button pad for damage. Especially I won't accede to any madness that would remove its control and go back to the unregulated condition of futility that. Automatically, quickly and without input from the operator. Once the draft was reduced it would lower the plow back it's original depth. Replace the switch cover and restore electrical power to the downdraft vent. You would hit a tough spot, one of the wheels would start to spin out and then the draft control would lift slightly adding weight and providing traction to get through. If the plunger isn't touching the bottom of the vent's button membrane, loosen the up/down activation switch mounting screws and move the switch up until the button membrane barely touches the up/down activation switch plunger. Check the position of the up/down activation switch plunger. Remove the switch cover from the right end of the vent. To check the switch position, unplug the downdraft vent, lift the vent and tilt it slightly so it stays in the raised position. If the outlet's okay, then you may need to adjust the position of the up/down activation switch. If the outlet isn't working, have an electrician repair the electrical outlet. Plug a small lamp or appliance into the outlet. If not, check the electrical outlet to make sure it has power. Check the house circuit breaker if it tripped, reset the breaker and see if the vent will go up. Lack of electrical power, problems with the up/down activation switch or a failed vent gear motor can prevent the downdraft vent from going up when you press the up/down button.įirst, check for electrical power going to the downdraft blower.