What to do if the Stelpro Thermostat display doesn't come on?
If the Stelpro Thermostat display isn't turning on, verify that the thermostat is correctly wired by checking the installation section. Also, check the power supply at the electrical panel and ensure the heating unit's switch, if present, is turned on.
How to fix weak luminosity of the Stelpro Thermostat display?
A weak luminosity of the display on your Stelpro Thermostat may indicate a bad contact. Check the thermostat wirings by consulting the installation section.
Why is the displayed temperature on my Stelpro STE402NP Thermostat 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 STE402NP Thermostat display turn off and on?
If the display of your Stelpro Thermostat turns off and on, it means that the thermal protection of the heating unit has opened due to overheating. Make sure that the heating unit is in good working order and that the space around it meets the manufacturer's specifications.
Why is the displayed ambient temperature incorrect on my Stelpro STE402NP?
If the displayed ambient temperature on your Stelpro Thermostat is incorrect, check for any nearby air streams or heat sources that might be affecting the reading. Correct the situation by removing the source of the air stream or heat.
What to do if my Stelpro STE402NP display does not come on?
If the display does not come on, you should first check if the Stelpro Thermostat is properly connected, referring to the installation section. Next, verify the power supply at the electrical panel. Finally, check if the heating unit has a switch and ensure that it is turned on.
What to do if Stelpro STE402NP is on but heating does not run?
If your Stelpro Thermostat indicates it's on, but the heating isn't running, verify that the thermostat is properly connected by checking the installation section.
Why is my Stelpro STE402NP Thermostat hot?
Under normal operating conditions, the housing of Stelpro Thermostat can reach nearly 40°C at maximum load. This is normal and won't impact how well the thermostat works.
Why does my Stelpro Thermostat display have low contrast when heating?
If your Stelpro Thermostat display has low contrast when heating is on, it may be because the load is lower than the minimum load. To fix this, install a heating unit that is within the load limits of the thermostat.
What to do if my Stelpro STE402NP Thermostat display indicates E1 or E2?
If your Stelpro Thermostat displays 'E1' or 'E2', this indicates a faulty thermal sensor. In this case, you should contact customer service for assistance.
Power| supply voltage | 120/208/240 VAC |
|---|---|
| minimum electrical current with a resistive load | 1.2 A |
| maximum electrical current with a resistive load | 16.7 A |
Electrical Power| minimum power at 240 VAC | 300 W |
|---|---|
| minimum power at 208 VAC | 260 W |
| minimum power at 120 VAC | 150 W |
| maximum power at 240 VAC | 4000 W |
| maximum power at 208 VAC | 3475 W |
| maximum power at 120 VAC | 2000 W |
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 incompatible heating systems and load types for the thermostat.
Lists the components included in the thermostat package.
Provides guidelines for choosing an appropriate mounting location for the thermostat.
Details the steps and safety precautions for mounting and wiring the thermostat.
Illustrates the wiring diagram for a two-wire thermostat installation.
Illustrates the wiring diagram for a four-wire thermostat installation.
Lists and describes the available operating modes: Frost free, Day, Night, Fan, and Automatic.
Explains the function of display indicators like ambient temperature, timer, and set point.
Identifies the buttons for adjusting set points, timers, and locking the set point.
Details how ambient temperature is displayed and measured by the thermostat.
Explains how to adjust and the range of the temperature set point.
Describes the dual Day and Night modes with independent set points and manual switching.
Explains the timer function in Night mode for temporary temperature settings.
Step-by-step guide to adjusting the Night mode timer duration.
Explains the Automatic mode for alternating Day/Night cycles over 24 hours.
Procedure for activating, deactivating, and setting the Automatic mode timer.
Explains the frost-free function and the meaning of the snowflake icon.
Details how to switch and display temperature in Celsius or Fahrenheit.
Explains the importance and activation of Fan mode for heating systems with fans.
Step-by-step guide to activating or deactivating the Fan mode.
Lists electrical ratings, temperature ranges, resolution, and certifications.
Details the 3-year warranty terms, conditions, and limitations.
Provides contact details including address, email, and website.
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