Local setup

Connect the controller to your home WiFi and choose a local mode, using only a browser on a phone or computer. No app needed.

Before you start

• The air conditioner's own remote
• A phone or computer with WiFi and a browser
• Your home WiFi name and password (the controller uses 2.4 GHz WiFi)
• For Home Assistant: your MQTT broker's address and a username and password for the controller (see Home Assistant)

Step 1: Open a pairing window

With the remote, set the AC to Cool, 30 °C, Low fan, and leave it for about 3 seconds. The controller opens a 15-minute pairing window (details in Open a pairing window with the AC remote).

Step 2: Join the controller's hotspot

1. In your phone's or computer's WiFi list, choose NH-AC-XXXXXX (XXXXXX is a 6-character code unique to each controller). It has no password.
2. The setup page usually opens by itself. If it doesn't, open a browser and go to http://192.168.4.1/.
3. The button at the top right switches between 中文 and English.

Step 3: Fill in the form

1. WiFi Network: pick your home network and enter its password. If it isn't listed, choose "Other network (enter manually)".
2. Connection mode:
   "Local MQTT (Home Assistant)" connects to your own MQTT broker, for Home Assistant and similar systems.
   "No MQTT" is for control from the status page or Apple Home only.
3. For local MQTT, fill in "MQTT broker URI", for example mqtt://192.168.1.10:1883, and the MQTT username and password if your broker uses them. To have the AC appear in Home Assistant automatically, tick "Enable Home Assistant discovery".
4. For Apple Home, tick "Enable Apple Home (HomeKit)" (off by default).
5. "Device name (optional)": for example "Living room AC". It's shown in Home Assistant and on the status page.
6. Admin password: at least 8 characters. You need it to log in to the status page and to see the HomeKit setup code, so keep it somewhere safe.
7. Tap "Finish setup".

Cloud mode isn't set up here: Cloud and app features are set up from the mobile app instead (cloud is not offered here).

Step 4: Back to your home WiFi

The controller restarts and joins your WiFi. Switch your phone or computer back to your home WiFi, then open:

http://nh-ac-xxxxxx.local/

xxxxxx is the same 6 characters as in the hotspot name, in lowercase.

If the WiFi password was wrong, the controller gives up after 60 seconds, reopens the hotspot and shows "Couldn't join “{ssid}” — check the password" on the setup page, with your network's name in place of {ssid}. Join the hotspot again and correct the password.

The status page

On your home WiFi, open http://nh-ac-xxxxxx.local/ and log in with the admin password. You'll see:

• Device: name, model, firmware version, IP address, signal strength
• Connection: the connection mode and whether the MQTT broker is connected
• Home Assistant: whether discovery is on
• HomeKit: pairing state and setup code (see Apple Home)
• Settings: change the connection mode, MQTT broker, name and HomeKit
• Change admin password and Reset WiFi

After changing settings, tap "Save settings", then "Restart" to apply them.

Units set up with the NH app

An AC added with the NH app starts without an admin password, so its status page is view-only. To set one:

1. Open a pairing window with the remote (Cool, 30 °C, Low fan).
2. On the same home WiFi, open the status page and reload it. "Set an admin password" appears.
3. Set the password. You can now log in to the status page and see the HomeKit setup code.

You can also set it from the "Apple Home (HomeKit)" screen in the NH app; see Apple Home.