rjzastaury
Posts: 10
Joined: Tue May 11, 2010 1:34 pm

Loud hum while charging

Tue May 10, 2011 7:59 am

I've been in the garage before while the Blink was charging my Leaf, and I don't recall much of any sound at all. Starting last night, however, it makes a loud humming noise when it's charging, which I find worrisome. Or did I just not notice it until now?

DarkStar
Posts: 2066
Joined: Sat Jul 17, 2010 10:06 am
Delivery Date: 25 Mar 2011
Leaf Number: 568
Location: Hillsboro, Oregon, USA
Contact: Website

Re: Loud hum while charging

Tue May 10, 2011 8:50 am

Humming is normal, however it usually isn't very loud. I would press on the Blink in various locations while you hear the humming to see if it diminishes as the box could act like a speaker, amplifying the humming.

I won't mention that the security tag fits through the hole without removing the tag, in case you were comfortable disconnecting the power and opening the Blink to check things internally. ;)
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association

rjzastaury
Posts: 10
Joined: Tue May 11, 2010 1:34 pm

Re: Loud hum while charging

Mon May 23, 2011 7:56 am

So ECOtality had the contractor get in touch with me, and they came over Friday afternoon, heard the buzzing and determined it was coming from the contact (or something like that), and just swapped out the whole Blink. It's quiet as a dormouse now.

ka2012
Posts: 1
Joined: Sun Apr 22, 2012 12:16 pm
Delivery Date: 22 Apr 2012

Re: Loud hum while charging

Sun Apr 22, 2012 12:19 pm

Same issue here.
I installed my Blink L2 charger like for nearly 2 weeks. Today, all of a sudden when I charged my leaf, a loud humming sound coming from the charging station.
(I am pretty sure it is from the charging station NOT from the leaf)
And the noise is quite large, that when I am in my bedroom above the garage (where the charger installed), I can also here the humming sound.

NissanTech375
Posts: 8
Joined: Sat Apr 14, 2012 6:18 am
Delivery Date: 23 Apr 2012

Re: Loud hum while charging

Sun Apr 22, 2012 12:23 pm

The cooling system for the inverter engages during charging. Pump runs, water moves. Car does hum a bit.
I don't steer the canoe, I just paddle.

DoxyLover
Posts: 517
Joined: Fri Jul 15, 2011 9:52 pm
Delivery Date: 16 Oct 2011
Leaf Number: 9214
Location: San Jose, CA

Re: Loud hum while charging

Sun Apr 22, 2012 8:46 pm

rjzastaury wrote:So ECOtality had the contractor get in touch with me, and they came over Friday afternoon, heard the buzzing and determined it was coming from the contact (or something like that), and just swapped out the whole Blink. It's quiet as a dormouse now.

Probably the "contactor", which the the high-current relay which disconnects the 240V from the car until everything is ready.
2011 Brilliant Silver Leaf SL
Reserved, quoted and ordered July 11, 2011
Delivered October 16, 2011 (Na. Plug-In Day)

DarkStar
Posts: 2066
Joined: Sat Jul 17, 2010 10:06 am
Delivery Date: 25 Mar 2011
Leaf Number: 568
Location: Hillsboro, Oregon, USA
Contact: Website

Re: Loud hum while charging

Mon Apr 23, 2012 11:48 am

DoxyLover wrote:
rjzastaury wrote:So ECOtality had the contractor get in touch with me, and they came over Friday afternoon, heard the buzzing and determined it was coming from the contact (or something like that), and just swapped out the whole Blink. It's quiet as a dormouse now.

Probably the "contactor", which the the high-current relay which disconnects the 240V from the car until everything is ready.

I agree, mine hums just a tad when it's under load too.
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association

QueenBee
Posts: 1564
Joined: Sun Aug 08, 2010 5:14 pm
Delivery Date: 20 Jun 2011
Leaf Number: 2062
Location: Bellevue (Seattle), WA

Re: Loud hum while charging

Mon Apr 23, 2012 2:47 pm

In a quiet garage standing next to the Blink you can hear it hum, it's a pretty constant hum that I wouldn't describe as chatter/buzzing/crackling/etc. It's definitely not supposed to be loud enough to hear it from a different room or even if you are away from the unit.

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