What to do if Stelpro Thermostat display does not come on?
If the Stelpro Thermostat display doesn't turn on, ensure it's properly connected by checking the installation. Also, verify the power supply at the electrical panel and confirm that the heating unit's switch, if present, is turned on.
Why is the Stelpro STE403NP Thermostat temperature reading incorrect?
If the displayed ambient temperature on your Stelpro Thermostat is incorrect, check for any air streams or heat sources near the thermostat and correct the situation.
Why does my Stelpro STE403NP display turn off and on again?
If the Stelpro Thermostat display turns off and on again after a few minutes, the heating unit's thermal protection might have opened due to overheating. Check if the heating unit is in good working order and ensure that the clearance around it meets the manufacturer’s specifications.
Why is my Stelpro STE403NP hot?
The Stelpro Thermostat housing can reach nearly 40°C at maximum load under normal operating conditions. This is normal and won't affect how well the thermostat works.
Why does my Stelpro STE403NP Thermostat display have low contrast when heating?
If the Stelpro Thermostat display has low contrast when heating is on, the load may be lower than the minimum load. Install a heating unit that is within the thermostat's load limits.
Power| supply voltage | 120 to 347 VAC, 50/60 Hz |
|---|---|
| minimum electrical current with a resistive load | 1.2 A 400 W @ 347 VAC |
| maximum electrical current with a resistive load | 16.7 A 5750 W @ 347 VAC |
Temperature Specifications| temperature display range | 0°C to 40°C (32°F to 99.5°F) |
|---|---|
| temperature display resolution | 0.5°C (0.5°F) |
| temperature set point range | 3°C to 30°C (37°F to 86°F) |
| temperature set point increments | 0.5°C (1°F) |
| storage temperature | -20°C to 50°C (-4°F to 120°F) |
Lists the components included with the thermostat package, such as the thermostat unit, mounting screws, and solderless connectors.
Provides guidelines on choosing an appropriate mounting location for the thermostat to ensure accurate temperature readings.
Details the step-by-step process for physically mounting the thermostat and making the necessary electrical connections.
Explains how the thermostat displays the current ambient temperature and the associated icon.
Describes how to view and adjust the desired temperature set point, including range and increment details.
Details the two operating modes, Day and Night, each with its own adjustable set point and indication method.
Explains the timer function for Night mode, allowing automatic return to Day mode after a set period.
Provides instructions on how to adjust the duration of the Night mode timer, from 1 to 999 hours.
Describes the Automatic mode, which alternates between Day and Night modes over a 24-hour cycle with different set points.
Details the steps to activate, deactivate, and set the timer for the Automatic mode within the 24-hour cycle.
Explains the function of the snowflake icon, indicating frost control is active when the set point is between 3°C and 5°C.
Covers how to select and display temperature readings in either Celsius or Fahrenheit units.
Explains the necessity of activating Fan mode for heating systems equipped with a fan to prevent failure.
Guides the user on how to activate or deactivate the Fan mode using the thermostat buttons.
Describes the feature to impose a maximum temperature set point, preventing it from being exceeded.
Details the steps to activate the lock feature by setting a maximum desired value and pressing buttons.
Explains how to disable the lock feature by cutting power and performing a specific button sequence.
Explains the percentage indicator on the display that shows the amount of heating power being used.
Describes how thermostat adjustments are saved and recovered after a power interruption.
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