Hey Comm,
I've been testing the latest firmware for the H1-gen2-WL and i've discovered that 1.55 of master breaks force discharging as the inverter just sits at idle.
Resolved by a downgrade to 1.53 again so this is more of a heads up, I've filed a bug report to Fox Engineering
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3 x KH Hybird Inverters (Parallel Mode)
1 x H1 Gen1 (Solar Mode)
1 x H1 Gen2 WL (Testing, Modbus and API development)
24 x HV2600 (62.4kWh), 2 x EP12, 2 x ECS2900
32 x 490w across 4 arrays
2 x EV's (Tesla & Mercedes) Fox ESS EV Charger & Hypervolt Chargers
Heatpump & Low Carbon Housebuild
Did I help you? Feel free to leave me a tip Book a zoom meeting for remote consultancy or help Switch to Octopus and earn £50 Subscribe to my YouTube channel3 x KH Hybird Inverters (Parallel Mode)
1 x H1 Gen1 (Solar Mode)
1 x H1 Gen2 WL (Testing, Modbus and API development)
24 x HV2600 (62.4kWh), 2 x EP12, 2 x ECS2900
32 x 490w across 4 arrays
2 x EV's (Tesla & Mercedes) Fox ESS EV Charger & Hypervolt Chargers
Heatpump & Low Carbon Housebuild
Hi Will - I’m running it too but with HA and Predbat controlling my H1-6.0-G2-WL and not seeing any force discharge issues with that control method (if it helps!)
Fox ESS H1-6.0-E-G2-WL Firmware - Master: 1.55 Slave: 1.04 Manager: 1.41 Datalogger (internal wifi) : 2.09
Fox ESS ESC 2900-H4 Cube Battery - Master plus 3 Slaves - All V2 - 11.52kWh Firmware - Master: 2.015 All Slaves : 1.150
Fox ESS Firmware updates applied June 2026
430w Jinko JKM430N-54HL4R-B all black panels (1 string of 6 and 1 string of 10 - SW facing) - 6.88 kWp
Myenergi Zappi 2.1 (installed "upstream of" and "invisible to" Fox ESS inverter)
Octopus Intelligent Go tariff
2 x EV - 2025 Kia EV6 AWD GTL-S (facelift) 84Kwh and 2024 VW ID Buzz 1st Edition 77Kwh
Fox ESS ESC 2900-H4 Cube Battery - Master plus 3 Slaves - All V2 - 11.52kWh Firmware - Master: 2.015 All Slaves : 1.150
Fox ESS Firmware updates applied June 2026
430w Jinko JKM430N-54HL4R-B all black panels (1 string of 6 and 1 string of 10 - SW facing) - 6.88 kWp
Myenergi Zappi 2.1 (installed "upstream of" and "invisible to" Fox ESS inverter)
Octopus Intelligent Go tariff
2 x EV - 2025 Kia EV6 AWD GTL-S (facelift) 84Kwh and 2024 VW ID Buzz 1st Edition 77Kwh
Site Admin
Fox replied and said they've found the issue and it will be fixed in 1.57 coming out soon.
Community Admin / FoxESS Elite Professional
Did I help you? Feel free to leave me a tip
Book a zoom meeting for remote consultancy or help
Switch to Octopus and earn £50
Subscribe to my YouTube channel
3 x KH Hybird Inverters (Parallel Mode)
1 x H1 Gen1 (Solar Mode)
1 x H1 Gen2 WL (Testing, Modbus and API development)
24 x HV2600 (62.4kWh), 2 x EP12, 2 x ECS2900
32 x 490w across 4 arrays
2 x EV's (Tesla & Mercedes) Fox ESS EV Charger & Hypervolt Chargers
Heatpump & Low Carbon Housebuild
Did I help you? Feel free to leave me a tip Book a zoom meeting for remote consultancy or help Switch to Octopus and earn £50 Subscribe to my YouTube channel3 x KH Hybird Inverters (Parallel Mode)
1 x H1 Gen1 (Solar Mode)
1 x H1 Gen2 WL (Testing, Modbus and API development)
24 x HV2600 (62.4kWh), 2 x EP12, 2 x ECS2900
32 x 490w across 4 arrays
2 x EV's (Tesla & Mercedes) Fox ESS EV Charger & Hypervolt Chargers
Heatpump & Low Carbon Housebuild
Site Admin
Thanks Jim, my issue is due to some specific settings conflicting in this firmware which explains why yours is working.
Community Admin / FoxESS Elite Professional
Did I help you? Feel free to leave me a tip
Book a zoom meeting for remote consultancy or help
Switch to Octopus and earn £50
Subscribe to my YouTube channel
3 x KH Hybird Inverters (Parallel Mode)
1 x H1 Gen1 (Solar Mode)
1 x H1 Gen2 WL (Testing, Modbus and API development)
24 x HV2600 (62.4kWh), 2 x EP12, 2 x ECS2900
32 x 490w across 4 arrays
2 x EV's (Tesla & Mercedes) Fox ESS EV Charger & Hypervolt Chargers
Heatpump & Low Carbon Housebuild
Did I help you? Feel free to leave me a tip Book a zoom meeting for remote consultancy or help Switch to Octopus and earn £50 Subscribe to my YouTube channel3 x KH Hybird Inverters (Parallel Mode)
1 x H1 Gen1 (Solar Mode)
1 x H1 Gen2 WL (Testing, Modbus and API development)
24 x HV2600 (62.4kWh), 2 x EP12, 2 x ECS2900
32 x 490w across 4 arrays
2 x EV's (Tesla & Mercedes) Fox ESS EV Charger & Hypervolt Chargers
Heatpump & Low Carbon Housebuild