Why EV Chargers Fail to Start After Software Updates in Hertford

However, many homeowners in Hertford are surprised when their EV charger refuses to start after an update. While this can seem like a technical glitch, the real cause is often linked to electrical compatibility rather than software alone.

Modern EV chargers rely on firmware updates to improve safety features, communication protocols, and grid compliance. When an update is installed, the charger may apply stricter safety checks than before. If the electrical installation does not meet these updated requirements, the charger may prevent charging altogether.

One common reason EV chargers fail to start after updates in Hertford is earthing issues. New software often increases sensitivity to earth resistance levels. Older properties may have earthing systems that previously functioned adequately but no longer meet updated thresholds. As a result, the charger disables itself to prevent unsafe operation.

RCD compatibility is another frequent issue. Many older installations use Type AC RCDs, which are no longer suitable for modern EV charging. After a software update, the charger may detect incompatible protection and refuse to energise the circuit. This is particularly common in homes where EV chargers were added to older consumer units without upgrades.

Network connectivity also plays a role. Smart EV chargers require stable communication with servers during and after updates. Poor WiFi signal strength, outdated routers, or electrical interference can interrupt the update process. When this happens, the charger may enter a fault state until the issue is resolved.

Load management settings can also change during updates. Some chargers reset default parameters, causing conflicts with existing household loads. In Hertford homes where multiple high demand appliances operate simultaneously, the charger may delay or block charging to prevent overload.

Temperature monitoring thresholds may also be adjusted. Updated software can introduce stricter thermal limits, particularly in installations where ventilation is limited. If internal temperatures rise too quickly, the charger may lock out charging as a precaution.
These issues highlight why professional installation and periodic inspection are essential.An EV charger that worked perfectly one year ago may struggle after updates if the underlying electrical system is not fully compatible with current standards.

If your EV charger in Hertford has stopped working after a software update, the issue is often electrical rather than purely digital. A qualified electrician can assess earthing, protective devices, and load capacity to restore safe operation.

For professional EV charger diagnostics and upgrades in Hertford, speak to an experienced electrician by calling 01992 276087.