Support

@Jeremy We have shipped a warranty  replacement controller and current measurement coil.

There is not much to fail on the coil. You can test it with a multimeter and measure the resistance. If the connection is secure and the coil is good, the controller would need to be replaced.

"To program unplug the cable that goes between OpenEVSE and the WiFi/Display module"

"plug in the USB/Serial adapter"

Press and hold the BOOT button then press RESET button. Release BOOT. This enters bootloader. Alternatively, you can hold BOOT while plugging in, then release.

The OpenEVSE adapter is a CP2102 with a custom harness to go from 0.1" dupont to JST PH. 

Programming is standard for ESP32 chips.

The repartition process for the TFT LCD in the short term requires a USB => Serial adapter and esptools (requires Python and pyserial).

Download the 5.1.2 - openevse_wifi_tft_v1.bin, bootloader_16mb.bin and partitions_16mb.bin from

https://github.com/OpenEVSE/openevse_esp32_firmware/releases/tag/v5.1.2

Connect the module to the USB => Serial adapter, then put the module in bootloader mode by holding BOOT and then pressing RESET then release BOOT

Run the command:

esptool --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_size=detect 0x1000 bootloader_16mb.bin 0x8000 partitions_16mb.bin 0x10000 openevse_wifi_tft_v1.bin

The odds of two sets of controller and display (original) and replacement having the exact same hardware issue is zero. There has to be something else going on, maybe a software bug. When you login to the station is the current readings 0A or is it just 0w on the display? Does the history show any data on Energy?

The process to enlarge the file partitions update to the latest firmware is:

The repartition process for the TFT LCD in the short term requires a USB => Serial adapter and esptools (requires Python and pyserial).

Download the 5.1.2 - openevse_wifi_tft_v1.bin, bootloader_16mb.bin and partitions_16mb.bin from

https://github.com/OpenEVSE/openevse_esp32_firmware/releases/tag/v5.1.2

Connect the module to the USB => Serial adapter, then put the module in bootloader mode by holding BOOT and then pressing RESET then release BOOT

Run the command:

esptool --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_size=detect 0x1000 bootloader_16mb.bin 0x8000 partitions_16mb.bin 0x10000 openevse_wifi_tft_v1.bin

@ Benjamin.nicolle

This is the correct USB/Serial device to program the ESP32 WiFi. https://store.openevse.com/collections/all-products/products/usb-to-serial-comm

To program unplug the cable that goes between OpenEVSE and the WiFi/Display module and plug in the USB/Serial adapter. The extra Debug port is not usable for programming. The USB/Serial adapter from the OpenEVSE store comes with the correct wiring harness, a generic USB/Serial adapter should work fine if you build a harness.