# Hardware Reset

The web UI of a Salia charging station has no default passwords. The
passwords for the accounts *root*, *user* and *service* are set at the first
start of the web UI by whoever commissions the station, and the web UI offers no way to
recover them. If the passwords are lost, the station is reset with the
**rotary switch on the controller board**. The reset does not need a network
connection, a password or a support login, but it needs access to the
inside of the housing.

Available in firmware 2.3.78 and later. Stations on firmware 2.2.x have
neither the password setup nor this reset; on older 2.3.x versions the
password reset goes through eCharge support.

## What the reset does

| | Reset | Kept |
| --- | --- | --- |
| Passwords | *user* and *service* are deleted. The first-setup page asks for new passwords for **all three** accounts, including *root*. | |
| RFID cards | The list of taught-in cards is emptied. | |
| OCPP | OCPP is disabled; the backend URL (including the charge point ID it contains), user name and password are cleared. | |
| Network | | IP settings, DHCP, DNS, time server. The station keeps its address. |
| Charging configuration | | Current limits, meters, solar settings, phase switching and every other setting on the configuration page. |
| Charging log | | Recorded charging sessions. |

The reset is meant to regain access, not to return the station to the
factory state. After the reset the OCPP settings and the RFID cards have to
be entered again.

## The rotary switch

The switch sits on the Salia controller board inside the housing. It is a
16-position rotary switch marked `0` to `F`. Its normal position sets the
phase count and current limit of the station and was chosen by the installer;
position `F` is reserved for the reset.

:::caution
**Note the current position before turning the switch.** Take a photo. The
position encodes the current limit and the phase count. A switch that is
returned to a wrong position changes the maximum charging current of the
station.
:::

:::danger
Opening the housing exposes mains voltage. Switch off the circuit breaker of
the station before opening it. The work is to be done by a qualified
electrician.
:::

## Procedure

1. Switch off the circuit breaker of the charging station and open the
   housing.
2. Note or photograph the position of the rotary switch.
3. Turn the rotary switch to position **F**.
4. Switch the circuit breaker on again. The station boots (green LED on, red
   LED blinking) and, once booting has finished, **switches itself off**: all
   LEDs go dark. The reset has been carried out at this point.
5. Switch the circuit breaker off.
6. Turn the rotary switch back to the position noted in step 2.
7. Close the housing and switch the circuit breaker on. The station boots
   normally.
8. Open the web UI of the station in the browser. It shows the first-setup
   page and asks for new passwords for *root*, *user* and *service*.

The check for position `F` runs at every start. A station left on `F`
resets and switches itself off at every start, so step 6 is not optional.

## After the reset

**Setting the passwords.** Set the passwords right away: until the setup is
completed, anyone in the local network can open the setup page without
signing in. Each password needs at least 12 characters with at least one
upper-case letter, one lower-case letter and one digit. Only the letters A–Z
and a–z and the digits 0–9 are accepted; special characters and umlauts are
rejected. After *Apply changes* the station saves the passwords and restarts
its web server, which can take up to a minute; the web UI is then reachable
with the new passwords. Store them: there is no other way back than this
reset.

**Browser cache.** The web UI uses HTTP basic authentication, and browsers
keep those credentials as long as they run. If the browser still shows a
sign-in prompt after the reset or refuses the new passwords, clear the
browser cache and close **all** windows of the browser before opening the
web UI again.

**OCPP and RFID.** Enter the backend URL and the OCPP credentials again under
*Configuration* and enable OCPP; teach in the RFID cards again. The rest of
the configuration is unchanged.

## What the reset does not fix

The reset only removes access data. It does not change the charging
configuration and does not clear a fault the station reports, for example a
*Faulted* connector status in an OCPP backend. Such faults have a hardware or
configuration cause and are handled separately.