Home charger begins charging at 240 then reduces charging to 110?

[Westernbent]

Took delivery of my Mach-E in Feb 2021, it has been trouble free until about 2 weeks ago (11,000miles) when, we started the car and got a black screen. Searched help and did a master reset using the steering wheel buttons and all seemed well. However, since then the home charger which is a dedicated, hard wired 240 Ford charger won't properly charge the vehicle. We plug in and all seems fine except the next morning after charging overnight we find it charged at what seems like the old 110 rate, 3 miles per hour, and a amber light on the left side of the charger glows a steady. Since then I started watching the charger and after about 5 minutes on charger the amber light appears. Anyone else have this problem.

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[RickMachE]

What charger?

Have you turned off the breaker and then back on to reset it?

Does your charger show anything in its app?

 

[Davedough]

I would immediately think the breaker itself might be faulty and need to be swapped out but it very well could be a bad charger as well. It sounds like something is either activating a precautionary measure in the charger or the circuit is unstable

 

[Westernbent]

What charger?

Have you turned off the breaker and then back on to reset it?

Does your charger show anything in its app?

Yes, reset breaker, circuit to car is not the issue.

Will go look at the app right now, don't use it because it hasn't been useful in the past.

 

[ShadowCVL]

Thats a new one, depending on the circuit if its dropping one of the Hots its going to ground. The car shouldnt allow that to swap and when it starts sending current to ground it should stop charging. (the car only has 5 pins, 2 hot 1 ground and 2 comms, no neutral). Is it a gfci breaker? its possible if its GFCI that its sending the "return" voltage through the breaker to the neutral or ground bus bar (bonded if main panel).

That could be dangerous.

Could be a contactor in the evse too, might have broken and is only closing one side somehow.

 

[Westernbent]

Yes, reset breaker, circuit to car is not the issue.

Will go look at the app right now, don't use it because it hasn't been useful in the past.

App says it is charging, target level 100%, est finish time 10:02, time on charger 1hr 50 min, distanced added 17 mi. energy 4kWh and charge type Acbasic.

Not 100% sure but we usually add almost 60 miles for being on the charger for 1hr and 50 min.

Wondering about cooling fan and a what battery temp does the fan come on.

 

[Westernbent]

App says it is charging, target level 100%, est finish time 10:02, time on charger 1hr 50 min, distanced added 17 mi. energy 4kWh and charge type Acbasic.

Not 100% sure but we usually add almost 60 miles for being on the charger for 1hr and 50 min.

Wondering about cooling fan and a what battery temp does the fan come on.

Well forget cooling fan? was just out there and its running.

 

[RickMachE]

If the charger shows a fault (and not the car), then the charger is having a fault, no?

Not an electrician, but sounds like the wiring connections need to be examined.

 

[saurez7777]

even my Chargepoint 50amps charger is also charging at 3.8 kw, it used to be around 9.4 kw when I bought it....

 

[zvez]

Well forget cooling fan? was just out there and its running.

is this the mobile charger that comes with the car or ford connected charger?

 

[breeves002]

Assuming you're using Fords mobile charger.

Get a multimeter and make sure you have proper power at the NEMA 14-50 socket. Test both hot's to ground and be sure you have the proper voltage on both hot-ground. The neutral doesn't actually matter for this charger but I would test that as well you should have the same voltage hot to neutral.

Make sure the connector is FULLY seated in the mobile charger. Maybe pull it out and push it back into the top of the unit.

If it still doesn't work I would think the mobile charger is faulty and needs to be replaced.

 

[s7davis]

As Breeves has mentioned these seems to be more of a wiring issue as for some reason your connection is not staying at the correct voltage/amps to keep it charging at 240. I am no electrician but seems like Breeves has mentioned you will need to check the voltage on each socket. Also make sure it is on a 50 amp breaker for the house and maybe it is a limit on the total amps the house can use and maybe something that is running when charging is causing the issue by not allowing the mache to grab all the amps/volts needed to charge.

Maybe your not charging with SOC low enough to need to full 240 and it is using a default of 110 so it doesnt cause harm to the cars battery. Their are a lot of different variables that can come into play as we do not know the entire situation of what is going on. But as breeves mentioned is a good troubleshooting step to see if your outlet is even getting the correct volts to the connector.

 

[dtbaker61]

Took delivery of my Mach-E in Feb 2021, it has been trouble free until about 2 weeks ago (11,000miles) when, we started the car and got a black screen. Searched help and did a master reset using the steering wheel buttons and all seemed well. However, since then the home charger which is a dedicated, hard wired 240 Ford charger won't properly charge the vehicle. We plug in and all seems fine except the next morning after charging overnight we find it charged at what seems like the old 110 rate, 3 miles per hour, and a amber light on the left side of the charger glows a steady. Since then I started watching the charger and after about 5 minutes on charger the amber light appears. Anyone else have this problem.

Did you take the MME into Dealership to have them test/replace your console screen? It should NEVER 'go black'. Mine (delivered late Feb) had the screen go black everytime I parked facing south and it got hot. The dealership/Ford replaced the screen, some associated modules, and updated.

Is the charge rate ok on a different charger? i.e. at a public charge station?
if you have an OBD2 and a (free) app like CarScanner, you can verify the charge current during charge and see what's going on

Unless your garage is REALLY hot and limiting your charge rate, it sounds like one of the hot conductors is loose.

I would start at the service panel.... either you or an electrician pull the 'dead front' cover off and :
- make sure the circuit breaker for the charger is firmly seated on the bus bar
- check the torque on ground, neutral, and L1, L2 .... all need to be TIGHT!

 

[DanHo]

is this the mobile charger that comes with the car or ford connected charger?

Assuming you're using Fords mobile charger. [snip]

Took delivery of my Mach-E in Feb 2021, it has been trouble free until about 2 weeks ago (11,000miles) when, we started the car and got a black screen. Searched help and did a master reset using the steering wheel buttons and all seemed well. However, since then the home charger which is a dedicated, hard wired 240 Ford charger won't properly charge the vehicle. We plug in and all seems fine except the next morning after charging overnight we find it charged at what seems like the old 110 rate, 3 miles per hour, and a amber light on the left side of the charger glows a steady. Since then I started watching the charger and after about 5 minutes on charger the amber light appears. Anyone else have this problem.

I'm going to assume it's the Ford Connected charger. Could be I'm reading too much into it though.

 

[breeves002]

I'm going to assume it's the Ford Connected charger. Could be I'm reading too much into it though.

Ah good catch. Helps if I read.

Probably a bad charger.

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