MRCOOL MST04 Smart Thermostat Owner’s Manual
Unit Overview
4
4.3 Device Controls
On-Device Controls:
Changing the Mode of your HVAC System:
Touch the menu button once. The modes will start blinking. Use the up or down button to select the
mode (i.e., Cool, Heat, etc.).
Changing the Fan Settings:
Touch the menu button twice. The fan settings icon will start blinking. Use the up or down button to
change the fan settings (i.e., On, Auto).
Locking/Unlocking the Display Interface:
Touch and hold the Temperature Up and Down buttons simultaneously until the lock icon on the top right
of the screen turns solid or disappears.
Resetting the Wi-Fi of Smart Thermostat:
Touch and hold the Temperature Up and Hold Settings buttons simultaneously until the Wi-Fi icon
disappears, and the Bluetooth icon starts blinking.
Wi-Fi Icon:
Case 1: Stable Wi-Fi Icon - Device is connected to the internet, showing Wi-Fi strength.
Case 2: Wi-Fi Icon with small triangle - Device is connected to the router but has no internet access. Ensure
you have a working internet connection and restart the device.
Bluetooth Icon:
Blinking Bluetooth icon - Device is in broadcast (AP) mode. Please complete the registration process.
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| General | Details |
|---|---|
| Name | MRCOOL MST04 Smart Thermostat Owner’s Manual |
| Make | MrCOOL |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.48 MB |

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