12K Mini Split doesn't work after installation -- what troub...

General Troubleshooting

Last Post by Montufar 3 weeks ago

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M. Piedlourde

Topic starter

January 10, 2025 5:18 pm

(@m-piedlourde)

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Joined: 5 months ago

I recently installed an EG4 12K Mini Split (not the solar one). I think I followed the directions exactly, but here's what happened during the post-install checkout. I tested the heat and cool modes. The heat mode blew air that was maybe a degree warmer than the room (65 degrees F), but it could have been wishful thinking on my part. Cooling mode did nothing, even when I tried forcing it in manual mode. I tried again the next day. This time the unit came on for a few seconds, then stopped. The exterior fan came on briefly, then shut off. The internal fan never came on at all IIRC.

What could be wrong? Do I have any realistic hope of finding the problem without a HVAC engineer's tools and expertise?

TIA

Topic Tags

#troubleshooting #minispl

6 Replies

Posts: 337

Joel Brodeur

January 10, 2025 5:26 pm

(@joel-brodeur)

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Joined: 8 months ago

Have you been able to connect the phone app to see if it is showing any warnings or alerts?

Sometimes the easiest solution is the best solution.
Sometimes not.

4 Replies

M. Piedlourde

(@m-piedlourde)

Joined: 5 months ago

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Posts: 2

January 10, 2025 11:10 pm

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Joel Brodeur

@joel-brodeur I wasn't aware of the app. I just now installed it and connected to my system, and.... it started working. Weird.

Joel Brodeur

(@joel-brodeur)

Joined: 8 months ago

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Posts: 337

January 10, 2025 11:16 pm

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M. Piedlourde

@m-piedlourde I am glad it is working but that is kind of strange. 🤔

Sometimes the easiest solution is the best solution.
Sometimes not.

BryanSpoon

(@bryanspoon)

Joined: 2 months ago

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Posts: 1

May 9, 2025 2:42 pm

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Joel Brodeur

@joel-brodeur Hey, I know this post was a while ago, what app is that? the stock one, Solar Aircon, doesn't really say much. I got my solar mini split set up, but she only seems to pull 300 or 400 watts, even with AC assist on, no heat or cold...and no error codes on the unit.

dfwtinker

(@dfwtinker)

Joined: 8 months ago

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Posts: 89

May 13, 2025 5:36 am

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BryanSpoon

@bryanspoon

Good Evening. You may want to look at this article. It worked for me and a few others using the Smart-Life app instead of the one that comes with the AC. In my case i have 10 cameras all running through Smart-Life and I really didn't want another app to deal with. Good Luck

https://forum.eg4electronics.com/community/high-efficiency-appliances/has-anyone-here-tried-adding-a-12-24k-mini-split-to-the-smart-life-app-as-mentioned-in-the-attached-snippet/#post-12518

Posts: 5

Montufar

May 19, 2025 7:44 pm

(@montufar)

Active Member

Joined: 3 weeks ago

On many mini splits, you can enter a diagnostic mode via the remote or front panel to check for error codes. EG4 might use blinking LED patterns or codes on the display.

Question 12K Mini Split doesn't work after installation -- what troubleshooting can I do?

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