Step-by-step instructions for converter update (with WINDOWS)

Material needed : 

• Use a mini / micro USB cable to connect your converter to your windows computer :
  • If serial number of convert si under or equal to 1630 -> use a mini USB 
  • if serial number of the converter is over 1630 -> use a micro USB

Step 1 : 

Download the 3 followings files,  find more information about this application in the article below : https://support.wattandsea.com/hc/en-us/articles/115003180574-Change-the-settings-or-update-CV-03-converter

Step 2 : 

Download the following files :

• 10.1.3.1 - EN CV-03 box opening.pdf
• win64ftdidrivers.zip (this is the driver)
• win64CV-03diagtoolV2.0.9.zip (this is the program to communicate with the converter)

If update of the converter is needed, download the last update (currently CV03bis.3.13_HYDRO_12-24.hex).

Step 3 : 

Unzip the files win64ftdidrivers.zip and win64CV-03diagtoolV2.0.9.zip

Step 4 : 

Install the driver win64ftdidrivers from the unzipped file.

Step 5 : 

Copy the CV03bis.3.13_HYDRO_12-24.hex unzipped on your desktop

Step 6 : 

Open the converter by removing the white plastic cap following the instruction of the pdf 10.1.3.1 - EN CV-03 box opening.pdf.

Step 7 : 

Launch the unzipped diagtool V2.0.9.

Step 8 : 

With the converter connected to the batteries (12/24V), connect your computer to the converter using the mini/micro usb cable.

Step 9 :

New Serial Port should appear (usual name is « Port Com xxx »). Select it and click on « Connect ».

Step 10 :

The converter and your computer should then be able to communicate (it can take ~20s). You should be able to see values of voltage batteries, temperature of the converter, etc.

Step 11 : 

Once the converter is connected, you can update the converter settings (in Settings – warning the voltage have to be modified in millivot mV) or switch to the Tab « Firmware »

Step 12 : 

On the diagtool, go into « Firmware », drag and drop the CV03bis.3.13_HYDRO_12-24.hex file into the empty box available in the diagtool. Click on « Program ». It should take around 30 seconds maximum until it is written « Thank you ».

Step 13 : 

You can disconnect your converter from the computer. The top plastic plate of the converter can be closed with a a slight amount of silicone (bathtub silicone) to ensure the watertightness. Reboot the converter by disconnecting/reconnecting it to the batteries and it is ready to go.