The charging session changed to 1-phase and won't go back to 3-phase

  • Updated

Charging stays on 1-phase

Owner: EaseeLast reviewed: 17 August 2026

Charging switched from 3-phase to 1-phase and won’t switch back? Restart the charging session to allow a new 3-phase start when enough capacity is available.

This article applies when Phase mode is set to Automatic, or when phase selection is controlled through surplus charging.

01

Restart the charging session

Pause and start charging again in the Easee app

  1. Pause charging.
  2. Wait until charging has stopped.
  3. Start charging again.

If the site and vehicle support 3-phase charging and enough capacity is available, the new session can start on 3-phase.

02

Why it stays on 1-phase

When there is not enough capacity for 3-phase charging, Easee can switch an active session to 1-phase. The session then remains on 1-phase to protect the charger’s relays.

3-phase → 1-phaseCan happen automatically
1-phase → 3-phaseRequires restarting the charging session

Additional capacity becoming available does not change the active session back to 3-phase.

03

When this can happen

Not enough capacity for 3-phase charging

If the available capacity temporarily drops too low, Automatic phase mode can switch the session to 1-phase. The session remains on 1-phase when enough capacity becomes available again.

Solar surplus changes

A session may start or continue on 1-phase because of the available surplus. Even if enough surplus later becomes available on all three phases, the active session does not switch back automatically.

04

Charger locked to 3-phase with Surplus only?

At least 6 A of surplus must be available on each phase for approximately 10 minutes before charging can start.

L1≥ 6 A
L2≥ 6 A
L3≥ 6 A

INTERACTIVE TOOL

Surplus Charging Simulator

Enter your production and household consumption on L1, L2 and L3 to check whether enough surplus is available for charging.

Open Surplus Charging Simulator →

Good to know: Surplus is assessed separately on each phase. Available current from different phases cannot be added together.

05

Using a third-party integration?

An electricity provider, EMS, smart-home service or another integration may control charging or apply its own limits. Check the provider’s settings and documentation if charging behaves differently from the standard Easee control.

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