Ohme Wall Charger Troubleshooting | Smart Home Charge | Smart Home Charge

Ohme Intelligent Wall Charger Troubleshooting – common issues and solutions

13th May 2021 Kyle Roache


Having some issues with your Ohme Intelligent Wall Charger? Here are some simple things to check that may solve the problem before contacting Ohme support.

No product is perfect or without its faults and the same goes for electric car chargers. That’s why we’ve created this handy troubleshooting guide for the Ohme Intelligent Wall Charger.

Have a look – you never know, you might solve your problem with the simple flick of a switch.

 

Try this first

Reset the Ohme Intelligent Wall Charger

Now we may be sounding like your local PC repair helpline when saying this but, have you tried turning it off and on again? Sometimes all the charger needs is a good old-fashioned reset (Also known as ‘power cycling’ in the EV world) and below is how you do it.

  1. Locate the circuit breaker that your charger has been connected to, this can either be found within your main consumer unit or installed as a separate switch.

  2. Once you have found the switch, pull it down to the off position for 10 seconds. This will allow any residual charge to drain away and the charger to power down completely.

  3. After waiting 10 seconds, push the switch back up to the “on” position and wait for the charger to power back on.

  4. If a successful connection has been established, the Ohme will display a mobile network strength indicator and a pair of up and down arrows in the top right of its LED screen.

Update the app

The Ohme app should be keeping itself up to date with the latest firmware automatically, but it’s always worth checking to see if the app is up to date via the app store on the iPhone or the Google Play on Android.

It goes without saying, if your problem is that your Ohme is not connecting to mobile data (You can check this by looking at the signal strength indicator located in the top right of the LED screen on the front of the unit) then that is a separate issue that needs fixing.

 

Ohme Intelligent Wall Charger – specific issues

If resetting the unit or updating the app has not solved your issue, then try the following.

Ohme Intelligent Wall Charger acts as a “dumb charger” and charges my vehicle as soon as I plug it in rather than waiting for the set off-peak times or charge schedules.

First things first, make sure that you have added your energy tariff and set a charge schedule with a price cap. If you're unsure of how to do this then please visit our setup guide or watch our video on how to set up a schedule on your Ohme.

If you have done the above and the issue persists then the next thing you will want to check is your charger’s network connection. To do this, look for a mobile signal strength indicator and an "up and down arrow" icon located in the top right of the charger’s LED screen. Below is what you should see on screen:

 

If neither are showing then this means that the charger is not connected to Ohme’s server and therefore not receiving information such as charge schedules from your account. If the connection hasn’t been re-established even after resetting the charger then this could be the result of a faulty unit and you will need to contact Ohme regarding the issue.

The lights on my wall charger are cycling red, amber and green; the charger is also not charging

If your Ohme is doing this then that means you have set a charge schedule but haven’t set the parameters (e.g. your tariff’s energy prices, a price cap, charging using renewable energy, etc). For more information on how to set these parameters, please check out our Ohme set-up guide by clicking here.

My Car Charged outside of my tariff’s off-peak periods

The Ohme Intelligent Wall Charger will always aim to charge your vehicle within your tariff’s off-peak periods however, it will not be limited to these times. As a result, your Ohme might use on-peak hours to reach the target charge percentage set in your schedule. Fortunately, you can stop this from happening, all you’ll need to do is set up a price cap in your Ohme App. To do this, you’ll need to Open the Ohme app on the device your charger is linked to, tap the menu button then tap where it says tariff. Here you’ll be able to set a price cap that the Ohme will limit itself to when it’s charging your vehicle (Please note that you will need to select your energy tariff before you can set a price cap).

The Ohme app won’t display my vehicle’s state of charge

When it comes to the Ohme Intelligent Wall Charger, some features on the app work better with some vehicles than others. This is because Ohme communicates with vehicles using an API (Application Programming Interface), which is a system that allows the charger to access information such as the vehicle’s state of charge (SOC) and battery level. Sadly, only a handful of manufactures disclose their vehicle’s API information. These manufacturers are:

  • Renault
  • Tesla
  • Nissan
  • Jaguar
  • Hyundai
  • BMW
  • Kia

If you have a vehicle manufactured by one of the brands above then you’re in luck! Once set up, you’ll be able to do things like set charge schedules that charge your EV to a specific percentage.

If you don’t have a vehicle from a manufacturer that discloses their vehicle’s API then fear not, you’ll still be able to access many of the features that the Ohme has to offer but they might require a few additional steps.

For example, say if you want to charge your vehicle to 80% of its battery after your commute to and from work. You’ll need to look at how much charge you have leftover after your commute and adjust your charge schedule so that it adds the percentage needed to reach the target.

My charge history doesn’t show the cost of the charge

If you have charged your vehicle using the Ohme and you're not seeing how much your charge costed you then you might not have selected your energy tariff. To do this:

  1. Open the Ohme App

  2. Tap the menu button

  3. Select the “tariff” option (If you have successfully paired the tariff to your app this will option will show “Tariff: Your Tariff”)

  4. Choose the supplier you are currently with.

  5. Enter your postcode.

  6. Some suppliers offer multiple tariffs and if yours is one of them then you’ll need to select the tariff you are currently with (If your tariff is doesn’t appear on the list then please see the solution below).

  7. After confirmation, set the “never charge above rate” to the price you want your charger to be limited to if you want to do so.
     

 


 

My energy tariff isn’t listed in the tariff options

Ohme takes most energy providers into account when it comes to setting up the price cap on your charger, however, there is always a chance that your provider isn’t listed, especially if they are one of the less well-known providers. If you don’t see your tariff listed then you’ll need to enter your details manually. To do this:

  1. Select the tariff option in the menu bar.

  2. Scroll down to the bottom until you see the “Create new tariff” option

  3. Select either “Fixed price tariff” or “Variable price tariff” depending on your tariff type


     

Variable tariffs

  1. Enter the start and end of your off-peak hours (This timespan can be found on your electricity bill. If it isn’t, contact your provider).

  2. Enter the price per kilowatt (p/kWh) of your off-peak hours (Again this can be found on your electricity bill or by contacting your provider)

  3. Enter the price per kilowatt (p/kWh) you pay at all other times outside of your off-peak hours and press continue.

  4. Chose your time zone and select if your meter runs on daylight savings (If you are unsure if your meter does or not, please contact your provider). After this, tap continue

  5. Enter the name of your tariff (i.e. E.on Charge) and tap save.



Fixed Tariffs

  1. Enter the price per kilowatt-hour that your provider charges (this can be found either on your energy bill or by contacting your provider) and tap continue

  2. Enter the time zone you are in and select if your meter runs on daylight savings (If you are unsure if your meter does or not, please contact your provider). Once done, tap continue.

  3. Enter the name of your tariff (i.e. e.on Fix Online v44) and tap save.

After entering your variable or fixed tariff, you should get a confirmation screen appear telling you that your tariff has been set up successfully. After you’ve tapped “okay” on the confirmation screen, you’ll be greeted with the options to edit or change your tariff.

I’m getting error messages telling me that my car is charging lower than expected

There are a few reasons as to why this can happen:

Firstly, some cars can limit the level of charge they take in. If you have this feature enabled and the limit is set to lower than the level of charge your Ohme is outputting then you will receive an error message on your Ohme app. To fix this, you’ll need to go into your vehicle’s charge settings (Each manufacturer does this differently so if in doubt, check your owners manual) and either turn the limit off or set it so that the charge limit matches the Ohme’s charge output (usually 7.4kw or 22kw depending on if have chosen to install the three-phase version of the charger).

Another reason why this problem can occur is because you might have selected a vehicle model on the app that has a higher charging capacity than the vehicle you own. For example, if you have a 2014 Nissan Leaf with a 3.3kw charger onboard and you select the version of the Leaf with the optional 6.6kw charger onboard. With the charger thinking you have a higher charger capacity on your vehicle than your vehicle actually has, the Ohme will base its charge schedule calculations on that higher charge output which triggers an error message when it can't reach that charge capacity.

To fix this, you’ll need to:
 

If the manufacturer shares their API information

  1. Tap the menu button in your Ohme App.

  2. Tap the “settings” option

  3. Tap “change car”

  4. Select your vehicle's manufacturer.

  5. If you have an online account with your vehicle’s manufacturer, tap account sign in, and enter your credentials. Skip to step 8

  6. If you don’t have an online account with your manufacturer, tap connect without account.

  7. Select your vehicle’s model

  8. Tap done on the confirmation screen.




     

If the manufacturer doesn’t share their API information

  1. Tap the menu button in your Ohme App.

  2. Tap the “settings” option

  3. Tap “change car”

  4. Select the “other” option at the bottom right corner

  5. Select your vehicle’s manufacturer and tap either "account sign in" if you have an account with your vehicle's manufacturer or "connect without account" if you don't

  6. Choose the model of your vehicle (Pay attention to the battery capacity and kW input. For example, if you have a 2011 24kWh Nissan leaf with a 3.3kW charger onboard select “Leaf 24kWh / 3.3kW 2011”)



Tap done on the confirmation screen.

 

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