How to fix Stelpro Maestro SMT402 Thermostat connection icon flashing?
If the connection icon on the Stelpro Thermostat home screen is flashing, reset the thermostat and reconnect it to the (Zigbee) controller • thermostat. This indicates there’s a problem with the Zigbee radio module.
What to do if my Stelpro Maestro SMT402 Thermostat cannot measure the temperature?
If the Stelpro Thermostat cannot measure the temperature because the temperature sensor is defective, replace the thermostat.
Why Stelpro Thermostat doesn't light up after installation?
If your Stelpro Thermostat doesn't light up after being installed, ensure the thermostat wires are properly connected and the caps are tightened. Also, verify that the circuit breaker associated with the heating system in the electrical box is ON. If the heating system has a switch, ensure that it is in the ON position.
What to do if my Stelpro Maestro SMT402 is always on?
If your heating is always on, even when the setpoint temperature has been reached, make sure the wires of the Stelpro Thermostat are properly connected.
What to do if my Stelpro Maestro SMT402 doesn't connect to Zigbee network?
If your Stelpro Thermostat doesn’t connect to the Zigbee network, ensure that the thermostats between this thermostat and the controller are installed and connected to the Zigbee network. Also make sure that the controller is in connection mode and that you have selected the correct channel. Your thermostat may be too far from another thermostat in the network.
What to do if heating system does not run even though the Stelpro Thermostat indicates it is on?
If the heating system does not run even though the Stelpro Thermostat indicates it is on, ensure that the thermostat wires are properly connected.
What to do if Stelpro Maestro SMT402 Thermostat buttons do not respond?
If the Stelpro Thermostat buttons do not respond, except for advanced menu access, deactivate lock mode.
What to do if my Stelpro Thermostat detects an open window?
If the Stelpro Thermostat has detected an open window, close the window or disable open window detection.
Why is my Stelpro Thermostat displaying the wrong temperature?
If the Stelpro Thermostat is not displaying the correct ambient temperature, make sure there are no drafts or sources of heat near the thermostat.
Why does my Stelpro Thermostat fan heater turn on and off frequently?
If the fan heater turns on and off frequently, in the heating mode menu (3), select ON.
Essential safety step to cut power supply before installation to prevent electric shock.
Instructions on how to remove the old thermostat and disconnect its wires.
Details on attaching the mounting plate to the electrical box securely and straight.
Guidance on connecting the thermostat wires using supplied caps and ensuring secure connections.
Steps to align and attach the thermostat securely to the mounting plate, avoiding wire pinching.
Instructions on restoring power and checking if the thermostat turns on correctly.
Steps to reset the thermostat to its default factory settings.
General| Control Type | Electronic |
|---|---|
| Display | LCD |
| Wi-Fi Connectivity | No |
| Mobile App | No |
| Temperature Range | 5°C to 30°C (41°F to 86°F) |
| Compatibility | Electric Baseboards, Convectors, Fan-forced Heaters |
| Voltage | 120/240V |
| Wattage | 4000 W @ 240 V, 2000 W @ 120 V |
| Amperage | 16.67A |
| Programmability | 7-day programming |
| Accuracy | ±0.5°C |
| Mounting | Wall |
| Dimensions | 4.5 x 4.5 x 1.1 inches |
| Weight | 0.5 lbs |
| Certifications | cULus |
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