Hi, I’m a new installer of fox Ess i currently have 2 systems I need help with configuring parallel mode with.
I have 1 system with 2 x H3-8.0-E inverters with a lost meter fault on what will be the slave, with its can connection and dip switches set as per instructions and I’m very confused as I have double and triple checked this
I also have another site with 2 x H3-Pro-25.0 inverters with the same issue except neither of them will work as the meter in connected into an Ems, Which is all set up and online / updated with again the correct connections everywhere, if anyone could shed come light on it, that would be great as I would like to keep my customers happy, I have tried ringing fox on 2 occasions and I can’t get through, will try again tomorrow , thank you
I can't help with the second problem as i've never come across the EMS, you'll need Fox for that.
Typically though with inverters in parallel you must connect them from Parallel 1 (Master) to Parallel 2 (Next Slave) it won't work if you go P1 to P1, obviously set the dip switches on the Master and last slave as per the manual.
You shouldn't set a meter option on the slave, it should be left disabled.
Finally on the Master in Settings make sure you go to Parallel and set 'Master Mode' , any slaves will automatically become slaves at this point.
Typically though with inverters in parallel you must connect them from Parallel 1 (Master) to Parallel 2 (Next Slave) it won't work if you go P1 to P1, obviously set the dip switches on the Master and last slave as per the manual.
You shouldn't set a meter option on the slave, it should be left disabled.
Finally on the Master in Settings make sure you go to Parallel and set 'Master Mode' , any slaves will automatically become slaves at this point.
Dave, you say "from Parallel 1 (Master) to Parallel 2 (Next Slave)".
In Will's video he says "connect from Parallel 2 on master to Parallel 1 on slave.
I've tried it both ways - without success - but I think my problem is probably due to the two inverters both have old (and different) firmware versions.
In Will's video he says "connect from Parallel 2 on master to Parallel 1 on slave.
I've tried it both ways - without success - but I think my problem is probably due to the two inverters both have old (and different) firmware versions.
The H3 Pro is a special case and often has an EMS box for KH and H1(G2) you are correct, it is from Parallel 2 on the first device to Parallel 1 on the next and so on.
The firmware should be the same on all devices, and the latest firmware will ensure that it is supported correctly.
Don’t forget to set the dip switches on the inverter that has the meter/ct fitted and in ‘parallel’ in ‘Settings’ set the Address uniquely on each inverter and number to the number of inverters connected.
The firmware should be the same on all devices, and the latest firmware will ensure that it is supported correctly.
Don’t forget to set the dip switches on the inverter that has the meter/ct fitted and in ‘parallel’ in ‘Settings’ set the Address uniquely on each inverter and number to the number of inverters connected.
Site Admin
You must have matching latest firmware before you try to configure them.
3ph inverters have their own special configuration which is documented in the manual
3ph inverters have their own special configuration which is documented in the manual
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FoxESS Tri Inverter Installation
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Buy me a coffee or Book a zoom meeting for remote consultancy
FoxESS Tri Inverter Installation
2 x KH & 1 x H1
24 x HV2600 (62.4kWh)
32 x 490w across 4 arrays
Dual Tesla Household
Heatpump & Low Carbon Housebuild