Wi-Fi Troubleshooting Guide

Quick answers to the most common Wi-Fi setup and connectivity questions for your mini split system.

✅ Before You Start

Before troubleshooting, make sure all three of these are true:

☐I’m connected to a 2.4 GHz Wi-Fi network — Smart HVAC units only work on 2.4 GHz. If your router broadcasts both 2.4 GHz and 5 GHz, make sure your phone is on the 2.4 GHz one before starting setup.

☐My app has Bluetooth, Wi-Fi, and Location permissions turned on — The app needs all three to discover your unit. If any were skipped during install, go to your phone’s Settings → Apps to enable them.

☐My router is within reasonable range of my unit — Your unit’s built-in Wi-Fi antenna is much smaller than the one in your phone. Even if your phone gets a signal, the unit may not. Keep the router as close as possible or use a Wi-Fi extender.

Guides

Helpful Resources

Not sure which guide you need?

Check the app you use to control your unit. If you downloaded the Midea Air app, use the Midea guide. If you downloaded the Gree+ app, use the Gree+ guide. You can also check the brand name on your indoor unit or remote control.

📄 Midea Wi-Fi Setup Guide →
For units using the Midea Air app

📄 Gree+ Wi-Fi Setup Guide →
For units using the Gree+ app

General

Common Wi-Fi Issues

Q
The app setup freezes near the end and then fails. What’s going on?

If the progress bar gets close to finishing (around 69%) and then throws an error, the most likely cause is a weak Wi-Fi signal at your unit’s location. You may also see “Error Code 1.”

What to try:

1Check where your router is located. If it’s on a different floor or several rooms away, that’s likely the problem.

2Try temporarily moving your router closer to the unit to confirm the issue is signal strength.

3If moving the router isn’t an option, consider adding a Wi-Fi range extender near the unit.

4If you’re setting up multiple units, start with the one closest to the router first.

Good to know: The Wi-Fi antenna inside your HVAC unit is much smaller than the one in your phone. Even if your phone shows a strong signal, the unit may not be able to connect reliably — especially on the 2.4 GHz band.

Q
My unit doesn’t show up when I search for it in the app.

There are two common reasons your unit won’t appear during the device search:

1. The unit isn’t in Wi-Fi pairing mode.

Make sure the unit is powered off, then press the Wi-Fi button on the unit (usually a few times) until you hear a beep. This puts it into pairing mode. Then try the search again.

2. The app doesn’t have the right permissions.

When you first install the app, it asks for access to Bluetooth, Wi-Fi, and your location. If any of these were skipped or denied, the app can’t find your unit.

The quickest fix:

1Delete the app from your phone.

2Reinstall it from the App Store or Google Play.

3When prompted, allow all permissions (Bluetooth, Wi-Fi, and Location).

4Put your unit back into pairing mode and try the search again.

Midea Air

Midea Air App & Connectivity

Q
The Midea Air app fails at 99%. Why does it get so close and then stop?

A failure at 99% is usually caused by one of two things:

1. Your phone’s mobile data is interfering.

Turn off mobile/cellular data on your phone and try the setup process again. Your phone’s data connection can conflict with the Wi-Fi pairing process.

2. You’re connected to a 5 GHz network or the signal is too weak.

1Open your phone’s Wi-Fi settings and make sure you’re connected to the 2.4 GHz network (often labeled with “2.4G” or without “5G” in the name).

2If signal strength is the issue, move your router closer to the unit or use a Wi-Fi extender.

Q
Where is the Wi-Fi adapter located on my Midea unit?

Low Wall Mount Units — Look for a small clear cover on the unit. Remove it to find the adapter plug underneath.

Mid-Static (BMM) Units — The adapter plug is behind the display cover, which is attached to the unit’s flip-up door. This cover is held in place with a screw and a couple of clips. Once removed, the plug is right there.

Standard (BM) Units — The adapter plug is positioned directly on the flip-up door for easy access.

Ceiling Cassettes, Floor/Ceiling & Concealed Duct Units: These use a different adapter that plugs into a port labeled CN40 on the main control board inside the unit. If you’re not comfortable accessing the main board, we recommend contacting a qualified technician.

Gree+

Gree+ App & Connectivity

Q
I can’t find my Gree unit in the app. What should I do?

The most common reason is missing app permissions. Make sure the Gree+ app has both Bluetooth/Wi-Fi access and Location turned on in your phone’s settings, then restart the setup process.

If it still doesn’t show up, try connecting manually:

1Open your phone’s Wi-Fi settings (not the Gree app).

2Look for a network with a random 8-character name (a mix of numbers and letters) — this is your unit broadcasting its own signal.

3Connect to that network. When asked for a password, enter: 12345678

4Go back into the Gree+ app and follow the on-screen steps to finish adding the unit.

Q
The Gree+ app fails at 49%. How do I fix this?

A failure at 49% means the app hasn’t successfully connected to your unit’s built-in Wi-Fi signal yet. This usually means the unit’s password hasn’t been entered or was entered incorrectly.

1Open your phone’s Wi-Fi settings.

2Find the network with a random 8-character name (letters and numbers).

3Connect to it using the default password: 12345678

4Go back to the Gree+ app and restart the setup process.

Q
The Gree+ app fails at 69%. What’s happening?

A failure at 69% points to a problem with your home Wi-Fi network rather than the unit itself. The two most common causes are:

1You’re on a 5 GHz network. These units only support 2.4 GHz. Switch to your 2.4 GHz network and try again.

2The signal is too weak. Move your router closer or use a Wi-Fi extender.

Quick test: Turn on your phone’s mobile hotspot, set it to 2.4 GHz, and try connecting your unit to the hotspot instead of your home Wi-Fi. If it works, you’ll know the issue is with your home network’s signal or frequency band.

Q
My Gree unit was connected before but now it’s offline.

If your unit was working and has gone offline, check these things first:

Has your Wi-Fi changed?

If you got a new router, changed your internet provider, or updated your Wi-Fi password, the unit is still trying to connect to the old network. You’ll need to delete the unit from the Gree+ app and set it up again with your new network information.

Has your router been moved?

If the router was physically relocated, the signal at your unit’s location may now be too weak to maintain a connection. Try moving the router back or adding a Wi-Fi extender near the unit.

Q
Where is the Wi-Fi adapter on my Gree unit?

On most Gree wall-mount units, the Wi-Fi adapter is located under the flip-up cover on the right side of the unit, near the top. A wire runs from the adapter to the unit’s main board.

Tip: If you need to check the adapter connection and aren’t comfortable opening the unit, please contact our support team or a qualified HVAC technician for assistance.

Wi-Fi Troubleshooting Guide

Wi-Fi Troubleshooting Guide