← Full guide: EV Charger Warranty Claim — Build the Evidence File

Isolate the fault before you demand a replacement

For “Isolate the fault before you demand a replacement”, warranty outcomes improve when the complaint identifies the failing layer.

Start here

For “Isolate the fault before you demand a replacement”, warranty outcomes improve when the complaint identifies the failing layer. Preserve logs and evidence first, then choose the path that matches the observed fault instead of resetting everything and losing diagnostic information.

What applies to this exact problem

Warranty outcomes improve when the complaint identifies the failing layer. Preserve logs and evidence first, then choose the path that matches the observed fault instead of resetting everything and losing diagnostic information.

No power or repeated electrical tripping

Check supply, breaker, earthing and installation evidence before blaming charger electronics. Record when the trip occurs and whether another load reproduces the problem. An electrical-supply or installation fault may require a different remedy from a charger replacement.

Charger powers on; the vehicle still fails to charge

Capture vehicle messages, charger LEDs, connector condition, compatibility information and another known-good charging attempt where safe. This helps separate handshake, cable, vehicle-side and charger-side failures.

App, network, authentication or payment failure

Preserve screenshots, timestamps, account details and backend error messages. A functioning charger can still fail as a service because authentication or connectivity is broken. Escalate with the digital evidence instead of requesting hardware replacement first.

Confirmed charger hardware fault

Use model, serial number, installation date, commissioning record, fault codes and support-ticket history to support the warranty claim. Ask for the exact repair, replacement or visit timeline and keep the defective-unit handover record.

No power or protection keeps tripping
Use this path when

The charger is dead, the breaker trips or electrical protection repeatedly activates.

Do now

Stop repeated resets and have supply, circuit protection and earthing checked by a qualified installer or electrician; keep the test report.

Avoid

Do not treat a site wiring fault as a charger warranty claim or keep energising visibly damaged equipment.

Charger powers on but the vehicle will not charge
Use this path when

The unit has power, but the session fails at handshake, connector or vehicle compatibility stage.

Do now

Save charger and vehicle fault codes, inspect the connector, and test only through approved procedures with a known-good vehicle or charger where practical.

Avoid

Do not factory-reset everything before preserving logs.

Energy works but app, network or payment fails
Use this path when

The physical charger can deliver power, but authentication, connectivity, billing or app control fails.

Do now

Separate the network/operator complaint from the hardware claim; save session IDs, timestamps and screenshots.

Avoid

Do not replace hardware before proving the fault is actually in the charger.

Hardware fault persists on a known-good setup
Use this path when

Supply, installation and vehicle have been reasonably ruled out, yet the charger still fails.

Do now

File the warranty claim with serial number, installer evidence and diagnostics, and ask who pays removal, labour, shipping and replacement.

Avoid

Do not accept an undefined “send it to service” process without written responsibility for costs and turnaround.

Check these first

  • No power or repeated electrical tripping: Check supply, breaker, earthing and installation evidence before blaming charger electronics. Record when the trip occurs and whether another load reproduces the problem. An electrical-supply or installation fault may require a different remedy from a charger replacement.
  • Charger powers on; the vehicle still fails to charge: Capture vehicle messages, charger LEDs, connector condition, compatibility information and another known-good charging attempt where safe. This helps separate handshake, cable, vehicle-side and charger-side failures.
  • App, network, authentication or payment failure: Preserve screenshots, timestamps, account details and backend error messages. A functioning charger can still fail as a service because authentication or connectivity is broken. Escalate with the digital evidence instead of requesting hardware replacement first.

Fix it in this order

  1. No power or repeated electrical tripping: Check supply, breaker, earthing and installation evidence before blaming charger electronics. Record when the trip occurs and whether another load reproduces the problem. An electrical-supply or installation fault may require a different remedy from a charger replacement.
  2. Charger powers on; the vehicle still fails to charge: Capture vehicle messages, charger LEDs, connector condition, compatibility information and another known-good charging attempt where safe. This helps separate handshake, cable, vehicle-side and charger-side failures.
  3. App, network, authentication or payment failure: Preserve screenshots, timestamps, account details and backend error messages. A functioning charger can still fail as a service because authentication or connectivity is broken. Escalate with the digital evidence instead of requesting hardware replacement first.
  4. Confirmed charger hardware fault: Use model, serial number, installation date, commissioning record, fault codes and support-ticket history to support the warranty claim. Ask for the exact repair, replacement or visit timeline and keep the defective-unit handover record.
  5. Record when the trip occurs and whether another load reproduces the problem.
  6. Ask for the exact repair, replacement or visit timeline and keep the defective-unit handover record.

Evidence to keep

  • Purchase invoice and warranty — keep it with the evidence for “Isolate the fault before you demand a replacement”.
  • Job cards/diagnostic report — keep it with the evidence for “Isolate the fault before you demand a replacement”.
  • Charging/range/error evidence — keep it with the evidence for “Isolate the fault before you demand a replacement”.
  • Subsidy or portal application record where relevant — keep it with the evidence for “Isolate the fault before you demand a replacement”.

Do not make it harder

  • Opening or repairing high-voltage components yourself For “Isolate the fault before you demand a replacement”, that can hide whether the underlying issue is actually resolved.
  • Accepting a warranty denial without the clause/reason For “Isolate the fault before you demand a replacement”, that can hide whether the underlying issue is actually resolved.
  • Assuming brochure range is guaranteed in every condition For “Isolate the fault before you demand a replacement”, that can hide whether the underlying issue is actually resolved.

How you know it is fixed

  • The official record and your real-world result agree for “Isolate the fault before you demand a replacement”.
  • You have enough written evidence to prove the issue is finished if it returns later for “Isolate the fault before you demand a replacement”.

If this still isn't resolved

  1. Manufacturer/dealer grievance State the unresolved issue explicitly: “Isolate the fault before you demand a replacement”.
  2. Scheme/portal helpdesk when incentive-related State the unresolved issue explicitly: “Isolate the fault before you demand a replacement”.
  3. Consumer remedy for unresolved product/service disputes State the unresolved issue explicitly: “Isolate the fault before you demand a replacement”.

Parent-guide references

These references support the parent guide and escalation context. Verify provider-, model-, policy-, or jurisdiction-specific details before an irreversible step.

Need the complete context?

This page solves one branch. The parent guide covers the full decision, edge cases, alternatives, and related checks.

Open the full guide