What to do if radiation measured data shows 0 W/m² on Steca Controller?
If the radiation measured data shows 0 W/m², even though the sensor is sufficiently irradiated, check the sensor and sensor line for defects, disconnections, or short circuits. Also, verify and correct the polarity of the sensor line.
What to do if Steca TR 0704 Controller flow rate sensor determines incorrect heat amount?
If the flow rate sensor or heat meter determines no or an incorrect amount of heat, it could be due to several reasons. First, ensure that the 'Heat meter' function is activated and programmed with the correct settings. Check if the supply and return line temperature sensors have been interchanged and correct them if necessary. Verify that the correct pulse value has been programmed for the volume flow meter and that the correct percentage of glycol is programmed. Ensure that Tyfocor L is used as the solar fluid. Also, check that the volume meter is installed in the correct flow direction and clear any blockage from the filter screen. Finally, bleed the air from the solar circuit.
What to do if pump/3-way valve on R4 is not responding on Steca TR 0704 Controller?
If the pump or 3-way valve on R4 is not responding even though the switch-on conditions have been met, first connect the terminal jumper if it is not already connected. Replace the fuse if it is burnt-out or defective. Ensure proper connections of the switch valve, making sure the continual phase L1 is connected as well as N and R4.
Indicates safety instructions for personal safety and system functioning.
Provides essential safety guidelines for installation and operation.
Explains the scope and purpose of the operating instructions.
Details the manufacturer's liability limitations regarding installation and use.
Specifies suitable and unsuitable locations for installing the regulator.
Describes the process of mounting the regulator on a wall.
Details the procedures for connecting wires and terminals.
Overview of the main menu structure and navigation buttons.
Displays current and logged system measurements graphically.
Provides an overview of pump/valve status and system error messages.
Lists and allows adjustment of threshold and hysteresis values.
Access point for configuring various system functions.
Allows manual control of outputs for testing and maintenance.
Details systems using an internal heat exchanger.
Details systems utilizing a plate heat exchanger.
Describes systems designed for supplementary heating functions.
Configures adjustable thermostats for output control based on temperature.
Implements hysteresis control for differential temperatures.
Sets up time-controlled functions using independent time clocks.
Activates frost protection for solar circuits, especially with water.
Enables fresh water function for domestic hot water heating.
Example of implementing a circulation function using a thermostat.
Example for stopping after-heating during morning hours for energy saving.
Example of programming supplementary heating using a differential thermostat.
Details connection of add-on modules via the IS bus.
Describes PC, laptop, or modem connection via RS232 interface.
Explains additional open-collector outputs and the alarm output.
General| Self-consumption | < 10 mA |
|---|---|
| Protection degree | IP 20 |
| Operating Voltage | 12 V / 24 V |
| Nominal system voltage | 12 V / 24 V |
| Product category | Solar Charge Controller |
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