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So, I'm installing my new mini split and the wires that connect the indoor unit to the outside compressor are odd.
One side is a connector I have never seen and looks lit they won't make a great connection. Thoughts on how to connect this connector to a ground screw effectively?
The yellow wires have a proper ring connector.
I haven't seen a connector like this. How do these fit in a screw. To the left in the upper picture you can see where the other three wires go. Those make a little more sense.
This is the other end of the wire. I'm assuming those go to the outdoor unit. Screws on that unit as well.
AI says that it doesn't go under the screw. Here’s how to connect it properly:
Locate the matching male tab — that ground screw (with the green head) is actually threaded into a metal plate that also has a flat male spade tab extending just above or beside it.
In some Aura models, the male spade tab is on the same grounding strip as the screw (where your yellow wire is already connected).
Slide the female spade connector (your green wire) onto that male tab.
Push it straight on until it’s snug. It should fit tightly and not pull off easily.
Do NOT loosen or wrap it around the screw itself — the spade connector is not meant to go under the screw head.
The screw holds the grounding bar and the ring terminals (like your yellow wire).
The spade terminal connects to the tab, not the screw.
So:
Yellow wire = ring terminal secured under screw.
Green wire (yours) = female spade that slides onto the flat tab on that same grounding plate.
When in doubt, read the directions, still in doubt, call tech support.
Yep, that's the next step. I've heard that the Senville tech support is awesome. I will give them a call this morning.
Their owners manual is very generic so it isn't too much help with questions like this.
Wade, you shop is way too nice and clean.
I just got off the phone with support. The power wires should hook up just fine, but I need to replace the ground connector.
We didn't get into detail, but he said something like, that's the way we get them. I didn't want to bug him about poor design. Changing out the ground connector is simple.
In my business, industrial control systems, I terminate literally thousands of wires in a week. I agree, first contact customer support to make sure the unit is installed as it was meant to be to avoid voiding any warranty issues. I would have snipped off the end and installed a ring terminal and attached with the screw. I doubt there would be any problems with doing this. I would just do it just because that's what I'd have done.
Nice clean work Bob! It makes troubleshooting and repair so much easier when you do the extra work up front.
So, when we meet at Truckstock, DO NOT look under my dash. It gives me heartburn knowing how bad I wired everything under there.
I hope to get out to the shop this evening for more work, but we will see. Granddaughters volleyball game is a higher priority.
Nice clean work Bob! It makes troubleshooting and repair so much easier when you do the extra work up front.
So, when we meet at Truckstock, DO NOT look under my dash. It gives me heartburn knowing how bad I wired everything under there.
I hope to get out to the shop this evening for more work, but we will see. Granddaughters volleyball game is a higher priority.
I won't look under your dash if you don't look under the dash of my truck. Under dash wiring is a lot different that wiring industrial control panel. Very rarely do I have to wire a panel where I have to squeeze into a small area upside down. I've had to crawl into some small, grundy areas when wiring contols in an industrial machine but thankfully most of the machine I wire to are new and pretty clean. Ford didn't offer us a lot of room to get to items under the dash and then add the modifications we've, and others, have done in the last 70+ years. I just try to make sure nothing shorts out under the dash.
I put in one of these systems, it was very clear in the instructions that the refrigerant was in the compressor, simply connect the lines, vacuum down and open the valves, unit did not work, there was no refrigerant only a nitrogen charge.
Another thing I remember was using a torque wrench on the flare fittings and I was sure that it was going to strip out before reaching the prescribed torque. If not for the torque wrench I would of not tightened them nearly as tight
Just had one installed. Fujitsu at least specifically called for a type of wire connector. The specific name escapes me but i remember my electrician commenting that they had to get those kind to follow the instructions and that’s what the HVAC installer wanted to see used. But the looked like a large two pronged fork. Larger than most types of connectors I’ve seen. Hope this helps?
