New Central Vacuum unit tripping breaker intermittently

[tsramkumar]

I recently had an MD 715H central vacuum system installed ( 14.9 amp max / 120 volts.)

It is on a dedicated circuit with a normal square D breaker 20 amp breaker. The power unit is in the Garage on a GFCI receptacle.

After a few weeks of being installed, every time I start the unit for the first time after being not used for a couple of days, after about 30 to 90 seconds the 20 amp breaker in the panel trips. Then after resetting the breaker, I could vacuum all day long without any more trouble. Sometimes, it may trip more than once in a single day.
Not sure what is causing the tripping. I had an initial conversation with the manufacturer support and they said i had to remove the GFCI and make it an ordinary receptacle for the dedicated circuit. I am hesitant to do this as NEC requires GFCI for all outlets in the Garage.
I came across a similar issue reported by another user on a different forum and one of the responses was to use High-Magnetic Breakers to Power the unit (Square D (#QO120HM) for a 20 amp circuit ).

This nuisance tripping is annoying and not sure what the resolution is. Any suggestion is greatly appreciated.

 

[tom baker]

This is not an issue we can assist you with, but rather it’s a manufacture/product issue.
The GFCI is doing its job protecting against leakage current

 

[Jraef]

I had an initial conversation with the manufacturer support and they said i had to remove the GFCI and make it an ordinary receptacle for the dedicated circuit. I am hesitant to do this as NEC requires GFCI for all outlets in the Garage.

I'll just comment on this part; your intuition is good on that. They are recommending that you violate the NEC, that's never a valid strategy.

But also, if the BREAKER is tripping and it's not a GFCI breaker, the fact that it's on a GFCI outlet has nothing to do with it. So Tom's point is valid; this is not an "electrical" problem as much as it's a product problem, stick to your guns with the manufacturer.