What to do if my Steca Thermostat shows 'Col1' flow rate fault?
If your Steca Thermostat displays 'Col1', indicating a flow rate fault, it could be due to a few reasons: there might be air in the system (in this case, bleed air from the system), the isolating valve might be closed (check the isolating valve), or the pump could be faulty (check the pump).
Why is my Steca Thermostat display empty or dark?
If the display of your Steca Thermostat is empty or dark, the controller power supply might be interrupted. To resolve this, check the controller power cable and the fuse for the power supply.
What to do if output R1 of my Steca Thermostat is overloaded?
If the pump connected to output R1 flashes, it means that the permissible values for R1 specified on the type plate have been permanently exceeded, and the output has been switched off. To fix this, check the electrical data of the pump and replace it if necessary. R1 is automatically switched on again.
What to do if output R2 of my Steca Thermostat is overloaded?
If the pump connected to output R2 flashes, it indicates that the permissible values for R2 specified on the type plate have been permanently exceeded, and the output has been switched off. In this case, check the electrical data of the pump and replace the pump if necessary. R2 is automatically switched on again.
What does it mean if my Steca Thermostat flashes 12 times?
If your Steca Thermostat is flashing 12 times, it means the controller power supply was interrupted for longer than 15 minutes. You should set the time on the thermostat.
What to do if there is a short-circuit at output R1 of my Steca Thermostat?
If a short-circuit exists at output R1 and the pump connected to output R1 flashes, it could be due to a faulty pump or a wiring fault. Check the pump and the wiring from R1.
What to do if there is a short-circuit at output R2 of my Steca Thermostat?
If a short-circuit exists at output R2 and the pump connected to output R2 flashes, it could be due to a faulty pump or a wiring fault. Check the pump and the wiring from R2.
Why is the solar circuit pump not operating on my Steca Thermostat?
If the solar circuit pump is not operating on your Steca Thermostat, even when the switch-on condition is fulfilled, it could be due to a few reasons: the pump power supply might be interrupted (check the pump power cable), or the pump might have seized up (get the pump working again, replace if necessary). If there is no fault.
Why does the solar circuit pump on my Steca Thermostat show cycle behavior?
If the solar circuit pump on your Steca Thermostat shows cycle behavior, it could be due to a temperature difference that is too small (adjust temperature difference in the Parameters settings menu), or the collector sensor might be incorrectly positioned (check the position of the collector sensor and correct if necessary).
What to do if my Steca Thermostat detected an interruption at the displayed sensor input?
If your Steca Thermostat detects an interruption at the displayed sensor input, check the cable and sensor connected to the sensor input.
General| Brand | Steca |
|---|---|
| Model | TR A502 TT |
| Category | Thermostat |
| Language | English |
Identifies the intended audience for this manual, focusing on technical professionals.
Explains the different danger levels used in warning notices and their associated risks.
Details the procedure for removing and reattaching the front panel of the controller.
Provides safety instructions and steps for removing the terminal cover.
Describes how to securely mount the controller unit onto a vertical surface.
Outlines crucial safety precautions and steps for making electrical connections.
Illustrates and describes the function of each terminal on the controller's connector block.
Explains how to prepare the casing's pre-punched openings for cable entry.
Details the process and important considerations for connecting electrical cables to the controller.
Provides instructions on how to install and remove the plastic links used for cable strain relief.
Lists terminal assignments for various system configurations and connected components.
Guides the user through setting the current time on the controller during initial setup.
Details how to select the appropriate system configuration for the installed setup.
Explains how to configure parameters for the first pump, including type and speed.
Details the configuration process for the second pump, if applicable to the system.
Describes how to activate and configure various functions of the controller.
Final steps to complete the initial setup and prepare the controller for operation.
Instructions for setting the controller's primary operating mode.
Describes the physical components and elements of the controller's casing.
Provides an overview of the controller's display areas and their functions.
Explains the meaning of various symbols used in the system graphics on the display.
Details the entries and structure of the controller's settings menu.
Describes the pictograms used to represent different functions on the controller.
Explains the different elements that constitute operational and setting values displayed by the controller.
Details the function and usage of each button on the controller.
Explains how to interpret the display information during normal operation.
Instructions on how to switch between the controller's different operating modes.
Describes the functionality and behavior of the controller when in 'Off' mode.
Explains how to operate the controller and its outputs manually.
Details the normal operating mode where the system is automatically controlled.
Provides a graphic overview of the structure and navigation within the settings menu.
Explains how to access and navigate through the controller's settings menu.
Guides the user on how to set or adjust the controller's time.
Details the process for selecting and configuring the correct system type.
Instructions on how to set and activate specific functions within the controller.
Explains how to access, view, and modify the controller's operational parameters.
Describes how to set the loading priority for multiple storage tanks.
Provides instructions on how to reset all settings to their original factory default values.
Explains how to display and activate various functions on the controller.
Describes the configurable characteristics for different functions, such as output, temperature, and input.
Details the specific characteristics and behavior of each available function.
Explains the Drainback function, its settings, and operational notes for specific systems.
Details the Circulation function, its temperature and time control settings.
Describes the Back-up heating function, its temperature and time restrictions.
Explains the Solid fuel boiler function, including activation and speed control.
Details the Quick charge function for faster storage tank loading.
Explains how the controller calculates heat quantity and CO2 savings.
Describes the Thermostat function for temperature-dependent switching.
Details the Differential thermostat function based on temperature differences.
Explains the Interval function for periodic switching of the solar circuit pump.
Describes the function to reduce system standstill times at high temperatures.
Explains the Holiday – recooling function to avoid stagnation during absence.
Details the Active cooling function for additional cooling.
Describes the Freeze recirculation function to prevent collector freezing.
Explains how to display temperatures in the upper region of storage tanks.
Details the Alarm output function for fault indication.
Sets the maximum allowable temperature for storage tank 1.
Sets the maximum allowable temperature for storage tank 2.
Sets the maximum allowable temperature for the swimming pool.
Defines the temperature difference for switching on the solar circuit 1.
Defines the temperature difference for switching off the solar circuit 1.
Defines the temperature difference for switching on the solar circuit 2.
Defines the temperature difference for switching off the solar circuit 2.
Sets the temperature difference for switching on the external heat exchanger.
Sets the temperature difference for switching off the external heat exchanger.
Sets the maximum allowable temperature for the collector.
Sets the minimum allowable temperature for the collector.
Defines the temperature difference for switching on the heating return increase.
Defines the temperature difference for switching off the heating return increase.
Sets the maximum temperature for the loading circuit.
Sets the minimum temperature for the loading circuit.
Configures the loading strategy for storage tank 1 (e.g., efficiency, temperature).
Configures the loading strategy for storage tank 2 (e.g., efficiency, temperature).
Selects the pump type (AC or HE) for output R1.
Selects the pump type (AC or HE) for output R2.
Sets the control mode (normal/inverted) for the storage tank loading valve.
Sets the control mode (normal/inverted) for the zone loading valve.
Sets the control mode (normal/inverted) for the return increase.
Lists common faults, their possible causes, and recommended remedies for the controller.
Explains specific error messages displayed by the controller and their troubleshooting steps.
Provides a guide and resistance table for testing the Pt1000 temperature sensor.
Presents detailed technical specifications for the controller, including inputs, outputs, and physical data.
Outlines the specifications for mains and sensor cables compatible with the controller.
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