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KH Series Master 1.55 and Manager 1.54 Firmware
Release notes -
Resolves an issue with low-voltage PV production that some users have reported
Resolves an issue with force discharge not kicking into self-use when reaching the FDSOC level
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2 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)
32 x 490w across 4 arrays

2 x EV's (Tesla & Mercedes)
Heatpump & Low Carbon Housebuild
Re: KH Series Master 1.55 and Manager 1.54 Firmware
Hi Will,

I'm still seeing the PV production issue, it now appears that no production is being logged below 250W. Have you seen any improvement at all?

Neil
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Re: KH Series Master 1.55 and Manager 1.54 Firmware
I also seem to still only see proper generation from 200w
Community Admin / FoxESS Elite Professional

Image Did I help you? Feel free to leave me a tip
Image Book a zoom meeting for remote consultancy or help
Image Switch to Octopus and earn £50
Image Subscribe to my YouTube channel

2 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)
32 x 490w across 4 arrays

2 x EV's (Tesla & Mercedes)
Heatpump & Low Carbon Housebuild
Re: KH Series Master 1.55 and Manager 1.54 Firmware
"Resolves an issue with force discharge not kicking into self-use when reaching the FDSOC level"

a number of us in Australia are still reporting this issue.
Re: KH Series Master 1.55 and Manager 1.54 Firmware
I'm on 1.55 Master and 1.58 ARM now and I'm seeing PV production down in the ~140W range in heavy cloud cover (70-80W on each of two strings). Perhaps it's resolved in this release instead?
Re: KH Series Master 1.55 and Manager 1.54 Firmware
Will wrote: Fri Dec 05, 2025 10:18 am Release notes -
Resolves an issue with low-voltage PV production that some users have reported
Resolves an issue with force discharge not kicking into self-use when reaching the FDSOC level
@will

Hi will I can report that the self use doesn't work after a firmware upgrade.
I have upgraded but the fdsoc is hit and my inverter goes to grid.

Is there an known issue with this firmware combination for kh10.5's

Manager 1.55
Slave 1.02
Manager 1.58
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