Sometimes Suctions, Sometimes Not
I have a Broan V28C-1 central vac that's 10 yrs old. Sometimes it will not turn on, neither by plugging in the hose, nor from the switch on the unit. Other times it works just fine.
When it works, I notice a grinding sound in the motor when it first starts up, but that goes away in a few seconds.
When it's not working, I have tried pressing the circuit breaker reset on the unit, but it still doesn't turn on. I have verified that there is power going to the unit. I have also checked the connections to the transformer, the relay, and to the motor. All connections are fine.