- EV charging
- EV charger
RDC-DD 6mA fault
Schneider Electric RDC-DD 6mA fault on EV charger: DC leak
Risk level
High
Professional inspection is recommended.
Urgency
High
Quick answer
On a Schneider Electric EVlink Pro AC station, an 'RDC-DD 6mA' fault means the 6 mA DC residual current detection device has tripped. If it happens while charging, unplug the EV so the fault clears; if no EV is connected, cycle power once and leave the station OFF if it persists.
Safety first
Stop and check this first
- If an RDC-DD 6mA fault does not clear after powering OFF and ON with no EV connected, Schneider Electric instructs leaving the charging station in the OFF position and contacting its CCC team.
Safe checks you can perform
- Unplug the vehicle if the fault occurred during charging
- Power OFF and power ON the station with no EV connected
- Leave the charging station in the OFF position if the fault remains
Leave these tasks to a qualified professional
- Do not attempt this professional task: Escalation to the Schneider Electric Customer Care Centre (CCC)
- Do not attempt this professional task: Isolation between vehicle-side DC leakage and station fault
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Escalation to the Schneider Electric Customer Care Centre (CCC)
What they doWhen the fault does not clear after powering OFF and ON with no EV connected, the technician leaves the station breaker in the OFF position and logs a case with the Schneider Electric CCC team.
They must show youconfirmation that the supply breaker is left OFF and the diagnostic details submitted to the CCC team.
In writingthe Schneider Electric CCC case number, the station serial number and the agreed repair or replacement action.
Isolation between vehicle-side DC leakage and station fault
What they doA qualified electrician tests the EVlink Pro AC with an EVSE tester with no vehicle attached and checks whether 6 mA DC tripping is reproduced only by a specific vehicle or in standby.
They must show youthe EVSE tester result with no car attached and whether the fault clears when disconnected from the vehicle.
In writingwhether the RDC-DD 6mA trip is vehicle-derived or persists on the isolated station after an OFF/ON cycle.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Unplug the vehicle if the fault occurred during charging
- Who:
- you, at the EVlink Pro AC charging station.
- How:
- if the RDC-DD 6mA fault appeared while a car was charging, unplug the charging connector from the EV and watch whether the fault erases itself automatically.
- Result that matters:
- following Case 1 in Schneider Electric's FAQ to see whether the DC leakage came from the vehicle.
- If the fault erases automatically once the EV is unplugged:
- the issue comes from the car, so have the vehicle checked.
- If the fault remains with the car unplugged or appeared with no EV connected:
- move on to Case 2.
- Evidence to keep:
- a note of whether an EV was plugged in and whether unplugging erased the fault.
Evidence: How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
Power OFF and power ON the station with no EV connected
- Who:
- you, using the external supply switch if you are authorised to operate it.
- How:
- with no electric vehicle connected to the charging station, switch the station power OFF and then back ON, and check whether the RDC-DD 6mA fault has cleared.
- Result that matters:
- completing the Case 2 reset check described in Schneider Electric FAQ000236213.
- If the fault clears after the power cycle:
- test with another vehicle to confirm normal charging.
- If the fault does not clear after powering OFF and ON with no EV attached:
- proceed to isolate the station.
- Evidence to keep:
- the time of the OFF/ON power cycle and whether the fault cleared afterwards.
Evidence: How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
Leave the charging station in the OFF position if the fault remains
- Who:
- you, before contacting support or your electrician.
- How:
- if the RDC-DD 6mA fault is still present after the power cycle with no EV connected, switch the charging station to the OFF position and leave it OFF as Schneider Electric instructs.
- Result that matters:
- keeping the station safely de-energised while you contact the Schneider Electric CCC team.
- If the station is switched OFF and you have the product details ready:
- contact the CCC team and your installer.
- If you cannot access the supply isolator yourself:
- mark the unit out of use and ask site maintenance to switch it OFF.
- Evidence to keep:
- the EVlink Pro AC commercial reference, serial number and a photo of the fault indication.
Evidence: How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- EV charging
- Brand
- Schneider Electric
- Product type
- EV charger
Known code variants
- error RDC-DD 6mA EVlink
- EVlink eWallbox AC 6mA fault
- EVlink eWallbox AC RDC-DD 6mA
- EVlink Pro AC 6mA DC fault
- EVlink Pro AC fallo RDC-DD 6mA
- EVlink Pro AC fuga 6 mA CC
- EVlink Pro AC RDC-DD 6mA fault
- RDC-DD fault EVlink Pro AC
- Schneider Electric RDC-DD 6mA
What it means
Schneider Electric's official support note FAQ000236213 ('How to manage an RDC-DD 6mA fault with EVlink Pro AC ?', last modified 20/06/2025) sets out two cases for an RDC-DD 6 mA DC residual current fault. In Case 1, if the fault occurs during an EV charge, unplugging the connection to the EV automatically erases the fault because it originates from the vehicle. In Case 2, if no EV is connected to the charging station, you power OFF and power ON the station; if the fault has not cleared, you contact the Schneider Electric Customer Care Centre (CCC) team and leave the charging station in the OFF position. The fault message alone never proves the charger hardware has failed.
Warnings and stop conditions
- Highsource verified
If an RDC-DD 6mA fault does not clear after powering OFF and ON with no EV connected, Schneider Electric instructs leaving the charging station in the OFF position and contacting its CCC team.
Evidence: How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
Symptoms and causes
Probable causes · in order
- DC leakage above 6 mA coming from the electric vehicle during chargingCommon
In Case 1 of FAQ000236213, Schneider Electric states that when the RDC-DD 6mA fault occurs during charging and clears automatically upon unplugging the EV, the fault is derived from the EV.
Evidence: How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
- Latched RDC-DD state with no vehicle connectedPossible
In Case 2, when the fault is present with no EV connected to the charging station, Schneider Electric instructs powering the station OFF and ON to verify whether the fault clears.
Evidence: How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
- Persistent internal RDC-DD fault on the charging stationLess common
If the RDC-DD 6mA fault does not clear after powering OFF and ON with no EV connected, Schneider Electric directs leaving the station in the OFF position and contacting its CCC team.
Evidence: How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
Virtual technician
Does RDC-DD 6mA fault still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
How to manage an RDC-DD 6mA fault with EVlink Pro AC ? (FAQ000236213)
Schneider Electric · 2025 · official_doc
Was this entry useful?