If there are issues with your Load & Solar module, you may experience issues with charging. Follow these steps to fix the issue.
Need to charge urgently? Your installer can remotely re-configure your charger without load balancing as a temporary solution.
They must use the Volt Time Installer app.
Alternatively, reconfigure your charger via the Web Portal. Go to Location>Configuration, then change:
OEM_LoadBalancingMode to
StaticOEM_ChargePointLimitA to a safe value (A)*
*Without load balancing, the charger will always try charging at this speed. You must be careful or you can blow your building's fuses out. The minimum is 6A. For reference, a water boiler uses about 8A.
How to check if there is a problem with your CT clamps
Web Portal
Go to Chargers>Overview>Power Usage.
The CT clamp values are displayed live in A per phase
Are the values missing? Alternative:
Go to Chargers>Configuration
Check the key OEM_EVSEsDiagnostics, the values are displayed in mA
How to know if there's a problem
Negative values represent power being delivered from your house back to the grid.
Check for unrealistic values:
Values swinging rapidly
Values higher than your building's maximum
Negative values when there is no solar power being generated
High values without consuming much power in your building
Values going the wrong way (when you start charging, values dropping instead of rising)
How to fix issues with Load & Solar Module (CT Clamps)
Unrealistic values
This is the most common issue. It is caused by a bad contact.
CT clamp not connected
CT clamp connected, but not closed properly
Load Balancing RJ12 cable plugged into smart meter instead of Load & Solar module
Internet and load balancing cables swapped
Aux jack(s) not plugged in all the way
Load balancing cable plugged into the left port (RJ45) of the charger instead of the right one (RJ12)
Load balancing cable not plugged into the charger all the way
Damaged load balancing cable
Damaged load balancing port on the charger
Load balancing cable crimped incorrectly or badly*
*This is the most common issue. The load balancing signal is analogue, and is therefore extremely sensitive. If the RJ12 pins do not make clean contact with the wires of the cable, there will be issues.
Realistic values, but going the wrong way
This may be caused by clamps pointing the wrong way, or phases being swapped. Possible approaches:
Easiest fix: Swap AUX plugs of the affected phases. For instance, if phase 1 and phase 3 have values going the wrong way, swap the green and yellow aux plugs in the black box.
Check for CT clamps pointing the wrong way.
Check for CT clamps whose AUX plugs are not plugged into the corresponding port.
Reconfigure the charger with the Volt Time Installer App and select a corresponding phase rotation option.
