Having problems with your Broan-NuTone CV350 Central Vacuum ?

Central vac will not turn off

\015 Cental vac does not turn off, it does howEver turn off when using the manual switch. I disconnected the low voltage wires coming from the unit the same problem occured, no change.\015

Answers :

Base d on your description... you have a defective internal relay, value $25-30US . It sits under the lid beside the motor and has generally 4-6 low and hi voltage leads plugged into it. Sometimes this component and the transformer is replaced by a new circuit board.Tag all wires with # position remove and take to a vacuum pro shop. Original relay may look different from the new one.
Repair Help & Product Troubleshooting for Broan-NuTone CV350 Central Vacuum

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