C
ontroller
& D
isplay
- F
lash
p
roCeDure
e-t
eCh
M 36 FleX
PREPARATION
Required Material
• Computer with Internet connection
• E-Tech M electrical boiler - not connected to
power supply
• Empty USB stick - FAT 32 formatted - max 32 Go
General remark
When formatting a USB stick, be aware
that all information it contains will be
deleted. Please check out the Internet to
find more information on how to proceed
to correctly format a USB stick.
USB stick Set-up
1. Connect the USB stick to your computer and make
sure that it appears in the file manager.
2. Connect to https://www.acv.com/international/
page/usb-key-flash
or scan the QR code below for
quick access.
3. Download the latest version of the
E-Tech M Controller & display soft-
ware (.zip files) to your computer.
General remark
• Two types of files are available : one for
the controller and one for the display.
Check on your E-Tech M appliance
what is the current version. Download
a new one as required.
• Display version is shown at start-up
• Controller version is displayed
on the setting menu page. Refer
to the Installation, Operation and
Maintenance Manual of the boiler.
4. Extract the zipped files to the root of the USB drive.
• Example of extracted files for the controller :
• Example of extracted files for the display
5. Dismount USB stick from the computer.
CONTROLLER UPDATE
1. Make sure that your E-Tech M boiler is turned
OFF (power supply button in central position).
2. Connect the E-Tech M boiler to power supply.
3. Install USB stick into the socket on front panel.
4. Turn the boiler ON by turning the selection switch
to the left or to the right.
5. At start-up, the controller will read the USB stick
and perform the update.
6. After about 2 minutes, the appliance will restart
automatically.
7. Remove the USB stick.
8. Restart the appliance to remove any remaining
errors.
USB socket
On/Off and
Mode Selection switch
1
E-Tech M - Flash Procedure: A1009670 - 664Y8510 • A
EN