This is the first EV Charger Fault we have worked on, but as the initial wave of installs start to age now, we don’t expect it will be the last. This one was actually for a neighbour and we clocked the issue as they were running an extension lead to charge their Tesla.
They confirmed there was a problem and we offered to take a look. The error code from the picture he shared suggested a relay issue, so we popped round with some tools to strip the board out.
The issue was fairly obvious when looking at the board. A relay had failed and in the lead up to this, it had caused a high current on one of the PCB traces, which could be seen as heat marks.

All was going well until we tried to find a replacement for the failed relay. The part number was clearly marked, but due to the global demand for EV chargers, it took a good amount of searching to find one in stock at a reasonable price, but we managed to get one ordered.

The terminals to the PCB are pretty substantial, so unsoldering took a bit of time, but once out the new relay slotted in and the tabs were re-soldered.
We took the repaired unit round to reassemble and when he got back, we witnessed first hand how happy he was to see it working. He had been quoted over £700 for a new PCB and that did not include installation, so this repair meant a saving of hundreds of pounds to him and not only that, it was done in a fraction of the time!
