How to Fix Central Vacuums With No Suction

Here are a few basic steps to troubleshoot a central vacuum with no suction at the inlets:

  1. Does your system activate with the manual on/off switch?
  2. If not, do you hear a clicking sound inside of the motor chamber?
  3. If you hear a clicking sound, one or both of the motors have failed and should be replaced.
  4. If no clicking sound, the relay has failed and should be replaced.

If your central vacuum system does not have any suction at the inlets, there are a few potential issues. Go to the main vacuum unit and attempt to activate the system with the manual on/off switch. If the system doesn’t activate, check to see if you hear a click inside of the motor chamber. If you do, one or both of the motors have failed and should be replaced. Visit this page for further information about replacing your motor.

If there’s no clicking sound, that means the relay or circuit board has failed and should be replaced. Visit this page for further information about replacing your relay.

View our customer Q&As for central vacs with low or no suction.

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