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Discussion Starter · #1 ·
My car was charging this morning and as my wife had to go out I went to unplug our Ohme Home Pro to let her go. As I was taking out the plug I heard a short popping noise and a smell of burning.
On inspection of the plug I could see very slight scorching in two of the sockets where metal meets plastic.
I put charging plug back in car and everything seemed to work fine however I did think it best to call Ohme.

Their technical support was superb, the lady remotely checked the charger and its log files showed no issue. Initially she advised that I could continue to use it but get it checked out by an electrician but almost immediately changed her mind and arranged for a replacement charger to be delivered and one of their approved installers to contact me ASAP to arrange replacement.

Car is happily charging on the "granny" charger so I am happy not an issue with the car.
Maybe a bit of moisture on the terminals causing a very minor short?

Can't fault customer service of Ohme and would highly recommend.
 

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Fyledeman, as a matter of interest did you stop charging first (either on the Mazda app/car or ohme app) then pull out the plug (which I assume is the car end of the type 2 lead) or just pulled it out irrespective? It would be good to know for future reference as the car pin design is meant to stop power the instant the signal "wire" is disconnected which should occur before power disconnection. If this doesn’t happen for any reason then you could get arcing as you may well be describing.

Excellent customer support (y)

Alan
 

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Discussion Starter · #3 ·
Yes just pulled out as I have done many times before as soon as car open and charging hadn't finished.
I did wonder if I shouldn't have done that but can't find anything in manual that says you can't do that.

If I use certain chargers such as at Aldi stores which are free to use there is no way of stopping the charge from the charger and this is only way of stopping charge.
 

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I tend to do the same. The manual does say somewhere that you can just disconnect.
You can manually stop charging a number of ways. Turn schedule on or turn charge level down to a % below current % for example. I wonder if moisture around the car socket can create the effect?

Hope the replacement goes smoothly.

Alan
 

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Discussion Starter · #5 ·
Alan, I tend to think there must have been a bit of moisture. We had an overnight freeze and car was only just defrosting.
Damage to the terminals on the Type 2 lead is so minimal and the fact no "fuses" etc tripped makes me think nothing serious. Credit to Ohme who just agreed to swap out the unit on the basis if any damage caused to the car would be their liability.
Hopefully all will be sorted next week.
 

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As per our query re removing cable whilst charging see below from podpoint. Doesn't mention stopping charge just disconnecting the cable from EV...which is what I normally do👍
Also the mx30 user manual states the charging cable lock is unlocked for a period after opening the car. No mention of stopping charging before the lock is released. That reinforces the fact the car charge system is designed to allow cable removal whilst charging is active in my view.

Alan

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Our MX30 did once the same with Duosida wallbox. Small spark happened during unplug and never again. Other time not charged the battery only once. I thing those anomalies coming from communication/contact problems. Who knows?
Andras
 

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My car was charging this morning and as my wife had to go out I went to unplug our Ohme Home Pro to let her go. As I was taking out the plug I heard a short popping noise and a smell of burning.
On inspection of the plug I could see very slight scorching in two of the sockets where metal meets plastic.
I put charging plug back in car and everything seemed to work fine however I did think it best to call Ohme.

Their technical support was superb, the lady remotely checked the charger and its log files showed no issue. Initially she advised that I could continue to use it but get it checked out by an electrician but almost immediately changed her mind and arranged for a replacement charger to be delivered and one of their approved installers to contact me ASAP to arrange replacement.

Car is happily charging on the "granny" charger so I am happy not an issue with the car.
Maybe a bit of moisture on the terminals causing a very minor short?

Can't fault customer service of Ohme and would highly recommend.
Our supplier of home charger (Shell) or New Motion as it was when first installed Sent me an email some weeks ago stating they are planning to change our plug in socket on their charger because some are over heating, don't know if this could be related to your query in that some sockets manufactured and used have been found to be faulty in some way?

Interestingly, they have not come back to me yet, might be a timely reminder to chase them up, good post 👍
 

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A plug would normally overheat due to bad contact. The added resistance between the plug and the socket is like a heating element. Perhaps Shell have discovered that the supplied plugs are either dimensionally incorrect or the material is too thin. Interesting one 🤔. If the bad contact issue was also on the p or c pins (as opposed to l, n or e) then you should have experienced charging issues also.

Alan
 

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A plug would normally overheat due to bad contact. The added resistance between the plug and the socket is like a heating element. Perhaps Shell have discovered that the supplied plugs are either dimensionally incorrect or the material is too thin. Interesting one 🤔. If the bad contact issue was also on the p or c pins (as opposed to l, n or e) then you should have experienced charging issues also.

Alan
Interesting Alan,

Myself, I have not had any of the problems Shell mentioned in their email, but I'm glad they intend to replace it.
 
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