My central vacuum does not start – what could be the cause if I do not hear a clicking sound from the relay?
When the central vacuum does not start at all, it can be useful to listen for a clicking sound from the relay when attempting to start it. This can provide an indication of where the fault may be located.
Answer:
If the central vacuum does not start and you do not hear any clicking sound from the relay, this indicates that the start signal is not reaching the motor. In such cases, the control board is usually defective and must be replaced.