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Technische Alternative ESR21-R - User Manual

Technische Alternative ESR21-R
40 pages
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ESR 21
Version / Versione / Versión 7.9
Simple solar control unit
Régulateur solaire simple
Regolatore semplice a energia solare
Regulación solar sencilla

Table of Contents

Questions and Answers

  • R
    Randy PottsAug 9, 2025
    Why is my Technische Alternative ESR21-R displaying incorrect temperatures?
    • R
      Ryan WallAug 9, 2025
      If your Technische Alternative Control Unit shows values like -999 (sensor short-circuit) or 999 (interruption), it doesn't automatically indicate a hardware issue. Ensure the correct sensor types (KTY or PT1000) are selected in the menu under SENSOR, as the default setting is PT (1000). To check the sensor, replace the potentially faulty sensor with a known working one on the terminal strip to verify the display.
  • B
    Brenda MillerAug 19, 2025
    What to do if my Technische Alternative Control Unit system is not in operation?
    • D
      Drew LevineAug 19, 2025
      If your Technische Alternative Control Unit isn't working despite having power, check the 3.15A quick-blowing fuse that protects the control system and the output. Replace the fuse if necessary.
  • C
    Christopher NixonAug 28, 2025
    How to troubleshoot a malfunctioning Technische Alternative ESR21-R with realistic temperature values?
    • J
      Jordan HernandezAug 28, 2025
      If your Technische Alternative Control Unit is malfunctioning but displaying plausible temperatures, consider these checks: * Verify the program number. * Examine the switch-on and switch-off thresholds and the set differential temperatures to see if they've been reached. * Check if settings in the submenus have been altered. * Test the output in manual mode to ensure it can be switched on and off. If it responds correctly during an endurance run, the unit is likely in order. * Confirm that all sensors are connected to the correct terminals. You can test a sensor by heating it with a lighter and observing the display.

Summary

Hydraulic Diagrams and System Programs

Program 0: Factory Settings

Details factory settings for program 0, covering pump operation and collector excess temperature shut-down.

Sensor Installation and Device Mounting

Collector, Storage, and Boiler Sensor Installation

Sensor Lines and Interference Prevention

Device Mounting and Casing Access

Electrical Connection, Data Link, and Safety

Electrical Connection Guidelines

Precautions for electrical connection, line routing, load limits, and grounding.

Data Link (DL) Specifications

Safety Requirements and Operation

Outlines general safety regulations, conditions for safe operation, and adherence to laws.

Operation and Display Navigation

Main Display and Icon Interpretation

Navigation Key Functions

The Main Level Interface

Parameter Menu Access (Par)

Basic Settings Menu (Men)

Parameter Menu (Par) Details

Switch-on;Switch-off Thresholds (max, min)

Explains how 'max' and 'min' parameters control output blocking and release based on temperature.

Differential Control (diff)

Details the 'diff' parameter for differential control, used for output release and blocking based on temperature difference.

Automatic;Manual Mode (O AUTO)

Changing Parameter Values

Parameter Value Adjustment Process

Troubleshooting Guide

Common Malfunctions and Temperature Checks

Addresses issues with temperature values, program numbers, and sensor connections.

Incorrect Temperature Display Diagnosis

Explains error values like -999/999 and how to check sensor types and resistance.

Specific Error Resolution and Support

Technische Alternative ESR21-R Specifications

General IconGeneral
BrandTechnische Alternative
ModelESR21-R
CategoryControl Unit
LanguageEnglish

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