21
Mercedes-Benz Wallbox Home
| Error detection and solutions
Display
Description
Error F15:
Current monitoring has detected that the preset maximum
load imbalance has been exceeded and has reduced the maximum
charging current.
The LED pulsates green and flashes blue once.
Solution:
Charging operations may continue, but the charging output will be reduced. If the error repeats, it is possible that a
fault has occurred in the charging system of the vehicle or that the maximum load imbalance setting must be checked. Con-
tact your local Mercedes-Benz technical support if required. In addition, always consider the notices provided in the operating
manual of the vehicle.
Display
Description
Error F16:
Data transfer to the integrated electrical current monitor is
disrupted. The maximum charging current is limited to 10 A while this
error occurs.
The LED pulsates green and flashes red once.
Solution:
Charging operations may continue, but the charging output will be reduced. If this error repeats or persists, an in-
ternal malfunction has occurred and the Wallbox must be replaced. Take the Wallbox out of operation (see “Taking the product
out of and back into operation” on page 22) and switch off the upstream MCB. Contact your local Mercedes-Benz technical
support.
Display
Description
Error F17:
The temperature monitor has detected a temperature above
60° Celsius inside the housing. The maximum charging current will be
limited to 6 A.
The LED pulsates green and flashes red once.
Solution:
Charging operations may continue, but the charging output will be reduced. If the error repeats or persists, the
Wallbox must be cooled and/or shaded more effectively at the installation site. If the error repeats or persists, the Wallbox
must be checked and replaced if required: Contact your local Mercedes-Benz technical support.
CAUTION!
If the Wallbox continues to or permanently displays error messages, take the Wallbox out of operation (see “Taking the
product out of and back into operation” on page 22) and contact your local Mercedes-Benz technical support. Repairs
may have to be carried out before charging procedures can resume.
Checking the internal RCCB
To ensure the continuing safe operation of the Wallbox, you must manually test the function of the internal RCCB every
6 months: The RCCB has a button with which to initiate the test function.
PLEASE NOTE!
The internal DC fault current detection conducts a self-test before each charging procedure: a manual check is not re-
quired. In case of an error, the LED display will show an error code (see also from page 18).
Proceed as follows to test an RCCB:
1. While the Wallbox is ready for operation, remove the housing cover using the key included.
2. Open the flap for the internal safety switches in the electronic components cover.
3. Locate the button engraved
T
or marked
Test
.
4. Press the button: The RCCB must now trip and flick its pivot lever into the center position (connection to the power supply
is interrupted).
5. Now switch the RCCB off completely (
0
position) and then back on by flicking the pivot lever up into the
I
position.
6. Close the flap, replace the housing cover and lock it using the key.
