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KH9 CT clamp and RS485 problem
Posted: Thu Jun 04, 2026 8:15 pm
by Snedders
Hi all, I’ve been attempting to get my kh9 hooked up to home assistant and managed to bodge my CT clamp connector at the same time.
I’ve put the CT in 7-8 and the other wire into 3/4 without much luck.
Any ideas?
Re: KH9 CT clamp and RS485 problem
Posted: Fri Jun 05, 2026 9:24 am
by Dave Foster
The home assistant (RS485) wires should go into 3 & 4
The main CT (CT1) should go into pins 7 & 8
Your picture looks correct so far.
I'm not clear what the other wires are unless you have a second CT clamp fitted>, in which case they should be connected to pins 5 & 6.
Re: KH9 CT clamp and RS485 problem
Posted: Fri Jun 05, 2026 9:28 am
by Snedders
Thanks for the reply! They were all correct but the CT was using both wires blue/brown so I corrected that this morning and it is now working as expected.
I had split the brown and white. Ignored the blue. So got them both in and I’m up and running again (now with home assistant)
Much appreciated!