Class Action Lawsuit - Home Integration System

[Jim Lewis]

Right.
But if you do that during a grid outage the inverter is off and you're done until the grid comes back up.

OK. I didn't understand the context in which you were talking about rebooting the HIS system and wanting to shut down the Dark Start battery.

I don't think the truck going to sleep per se is the problem. I've had the truck asleep, simulated an outage plenty by cutting grid power, had the port light come on, heard relays clicking in the truck with the FCSP LED turned green, and have the white port light go out after ~30 sec with no power transfer from the truck activated. So, with my truck at least, I think a power loss can wake the system, but the communication needed for automatic power transfer is not working. If I do the UNLOCK button trick or start the truck and initiate manual power transfer, it's worked the last 4x in a row (2x via UNLOCK trick, 2x via SYNC screen manual transfer with truck running).

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[Steely]

OK. I didn't understand the context in which you were talking about rebooting the HIS system and wanting to shut down the Dark Start battery.

I don't think the truck going to sleep per se is the problem. I've had the truck asleep, simulated an outage plenty by cutting grid power, had the port light come on, heard relays clicking in the truck with the FCSP LED turned green, and have the white port light go out after ~30 sec with no power transfer from the truck activated. So, with my truck at least, I think a power loss can wake the system, but the communication needed for automatic power transfer is not working. If I do the UNLOCK button trick or start the truck and initiate manual power transfer, it's worked the last 4x in a row (2x via UNLOCK trick, 2x via SYNC screen manual transfer with truck running).

How long ago did you repair the system? Does it list the charger as Ford 3000 or the new name?

 

[Jim Lewis]

How long ago did you repair the system? Does it list the charger as Ford 3000 or the new name?

I have the latest inverter firmware ending in .36 and after the firmware update, I did have to repair the truck and the FCSP. The FCSP is now identified in the IBP app as "Ford Charge Station Pro 1." I repaired my truck and FCSP on 6/16/25:

https://www.f150lightningforum.com/...train-battery-parking-brake.24247/post-532696​

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https://www.f150lightningforum.com/...train-battery-parking-brake.24247/post-533040​

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and tearitupsports reply: https://www.f150lightningforum.com/...train-battery-parking-brake.24247/post-533045​

 

[Pitbull2o08]

I need to make a new thread but I was able to get mine working after 70 plus emails with Ford engineering.

I would say that if your truck hasn't gotten updates you should pursue with Ford BEV hotline getting an appointment at a dealer to fix whatever is preventing that. In my case the gateway module was stuck in a state where updates were off no matter the setting shown on screen.

Confirm the inverter is up to date. There were some fixes in the newest version. I think it was version x.x.36

But most importantly and what fixed it for me was a hardware install issue. At some point they changed the installation and no longer connect the common/ground on the rs485 port. Old installs have orange landed there but this screws the transfer up and causes it to hang and eventually fail. Sunrun tech lifted this orange and it transferred properly immediately after for me.

If your having what looks like good transfer but then no power followed by failure after 1 to 2 minutes check if you have this orange communication line landed, it should not be.
I'll add in a before / wrong picture for reference.

That info was given to me over a year ago. Sunrun disconnected that orange wire. Still a no go.

 

[v2h8484]

That info was given to me over a year ago. Sunrun disconnected that orange wire. Still a no go.

Not surprised that disconnecting the RS485 ground didn't work. RS485 on systems like this should really be fully isolated electrically. Otherwise it's relatively common to see comms problems due to noise or out of range common mode voltages. One potential fix is to add isolation using an external isolator. Keep in mind that you will need an external power source (e.g. a 5V or 12V battery) for the isolator.

 

[Steely]

Not surprised that disconnecting the RS485 ground didn't work. RS485 on systems like this should really be fully isolated electrically. Otherwise it's relatively common to see comms problems due to noise or out of range common mode voltages. One potential fix is to add isolation using an external isolator. Keep in mind that you will need an external power source (e.g. a 5V or 12V battery) for the isolator.

Nevermind mine isn't working again. It's been 50 days since they disconnected that com wire, it worked 4 or 5 times in test shortly after, I ran it for 8 hours one test, but now after sitting it's back to the same failure mode - looks like it transferred but not actually powering the house for 90 seconds then a charger fault.

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