Distech Controls ECB-VAV - User Manual

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User Guide

Network Guide

Table of Contents

Questions and Answers

J
Justin Ellis DVMAug 18, 2025
Why is my Distech Controls Controller not turning on even though it's powered?
- J
  Julian FitzgeraldAug 18, 2025
  If your Distech Controls Controller is receiving power but not turning on, there could be a few reasons. Here's what to check: * **Blown Fuse:** If it's a 24V controller, the fuse may have blown. Disconnect the power, check the fuse, and reconnect the power. * **Power Supply Polarity:** Make sure that consistent polarity is maintained between all controllers and the transformer. Ensure the COM terminal of each controller is connected to the same terminal on the secondary side of the transformer. * **Insufficient Power:** If it's a 24V controller, the transformer may not be powerful enough. Verify that the transformer used is powerful enough to supply all controllers.
E
Evelyn DuarteAug 23, 2025
What to do if Distech Controls ECB-VAV wireless devices are not working correctly?
- M
  mckayrobertAug 23, 2025
  If wireless devices associated with your Distech Controls Controller aren't functioning as expected, consider the following troubleshooting steps: * **Device Association:** Verify that the device is associated with the controller using the device configuration wizard. * **Power:** Recharge the device with light if it's solar-powered, or replace the battery if it's battery-powered. Also, ensure sufficient light intensity (200lx for 4 hours/day) for solar-powered devices. * **Distance:** Reposition the device to ensure it's within range of the Wireless Receiver. * **Configuration:** Check the device configuration using EC-gfxProgram to ensure it's enabled.
V
vegatoddAug 31, 2025
What does it mean if the STATUS LED is blinking on Distech Controls Controller?
- J
  James BrownAug 31, 2025
  If the STATUS LED on your Distech Controls Controller is blinking, it indicates that the device has detected a fault condition. Consult the fault codes table for more information.
A
Alexis PattersonNov 4, 2025
What to do if Distech Controls ECB-VAV Controller does not communicate on a large network?
- E
  Erin JoyceNov 5, 2025
  If your Distech Controls Controller communicates well over a short network but fails on a larger one, consider these potential issues: * **Network length:** Ensure the total wire length does not exceed the specifications outlined in the Network Guide. * **Wire type:** Verify the wire type matches the specifications in the Network Guide. * **Network wiring:** Double-check all wire connections to ensure they are correct. * **Network termination:** Check the network terminations, as incorrect or broken terminations can affect communication integrity based on the controller's position on the network. * **Number of controllers:** Ensure the number of controllers on a channel does not exceed 50. If it does, use a router or a repeater. * **Max Master parameter:** Configure the maximu...
A
Anthony SextonNov 8, 2025
What to do if Distech Controls ECB-VAV hardware output is not operating correctly?
- V
  Valerie McphersonNov 8, 2025
  If a hardware output on your Distech Controls Controller isn't working correctly, consider the following: * **Blown Fuse:** If it's a 24V controller with an auto-reset fuse, disconnect the power and output terminals, wait a few seconds for the fuse to cool down, check the power supply and output wiring, and then reconnect the power. * **Wiring Issues:** Verify the output wiring is correct, referring to the module's hardware installation manual and the peripheral device's manufacturer specifications. * **Configuration Problems:** Use EC-gfxProgram to check the output configuration to ensure it is enabled. * **Actuator Problems:** If using a 0-10V output with a 24VAC powered actuator, check the polarity of the 24VAC power supply connected to the actuator. Reverse the 24VAC wire if n...
R
richard93Nov 13, 2025
What to do if Distech Controls ECB-VAV Controller hardware input is not reading the correct value?
- J
  jenniferjohnsonNov 13, 2025
  If a hardware input on your Distech Controls Controller isn't reading the correct value, here's what to check: * **Wiring:** Ensure the wiring is correct, following the module's hardware installation manual and the peripheral device's manufacturer's recommendations. * **Circuits:** Use a voltmeter to check the voltage on the input terminal. For a digital input, a short circuit should show approximately 0V, while an open circuit should show approximately 5V. Correct the wiring if there's a fault. * **Configuration:** Verify the input configuration using the controller configuration wizard. * **Voltage/Current:** An over-voltage or over-current at one input can affect other input readings. Ensure you're respecting the allowed voltage/current range limits for all inputs. Check the ap...
R
rhonda83Nov 26, 2025
What to do if Distech Controls Controller device does not communicate on the BACnet MS/TP network?
- T
  Terry YoungNov 26, 2025
  If your Distech Controls Controller isn't communicating on the BACnet MS/TP network, consider these potential causes: * **Voltage Issues:** For 24V controllers, check for 'Poor-Quality Power' status, verify the power supply voltage is within 24VAC/DC ±15%, and check for tripped fuses or circuit breakers. * **Transformer Overload:** For 24V controllers, check for 'Poor-Quality Power' status and ensure the transformer is powerful enough. * **Wiring:** Double-check wire connections. * **Termination:** Check network terminations. * **Max Master Parameter:** Configure the Max Master to the highest MAC Address of any device on the MS/TP data bus. * **Duplicate MAC Address:** Ensure each controller has a unique MAC Address. If the MAC Address DIP switch is set to 0 (all off), use an ...

Distech Controls ECB-VAV Specifications

General

Controller Type	VAV Controller
Enclosure Rating	IP20
Supply Voltage	24 VAC/VDC
Communication Protocol	BACnet MS/TP
Outputs	2 Analog Outputs (AO)
Operating Temperature	-20°C to 50°C

Summary

CHAPTER 2 BACnet MS;TP Communication Data Bus Fundamentals

BACnet MS;TP Data Transmission Essentials

Explains core data bus operation principles and EIA-485 standard.

Maximum Devices and Baud Rate Limitations

Details limits on devices and baud rate impact on performance.

Data Bus Topology and EOL Terminations

Device Addressing for BACnet MS;TP

Covers MAC addresses, Device Instance, and Network Numbers.

CHAPTER 4 Subnetwork Installation Guidelines

Setting Allure EC-Smart-Air;Comfort Subnet ID

Setting EC-Multi-Sensor Series Subnet ID

Setting ECx-Light;Blind Series Subnet ID

CHAPTER 5 Controller Installation and Maintenance with Allure EC-Smart-Vue Sensor

Commissioning Controller with Allure EC-Smart-Vue Sensor

Step-by-step guide for commissioning controllers using the sensor.

CHAPTER 6 BACnet Troubleshooting

Troubleshooting ECB Device Symptoms

Lists common ECB device issues and their possible causes/solutions.

CHAPTER 7 LonWorks Troubleshooting

Troubleshooting ECL Device Symptoms

Lists common ECL device issues and their possible causes/solutions.

CHAPTER 8 ECx-4 XX Series I;O Extension Module Specific Troubleshooting

Troubleshooting ECx-4 XX Series I;O Extension Module

Specific troubleshooting tips for ECx-4XX I/O modules.

CHAPTER 9 Allure EC-Smart-Vue Sensor Troubleshooting

Allure EC-Smart-Vue Sensor Troubleshooting Guide

Diagnosing issues related to the EC-Smart-Vue sensor.

CHAPTER 10 ECx-Light;Blind Series Troubleshooting

Troubleshooting ECx-Light;Blind Series Symptoms

Lists common issues and solutions for ECx-Light/Blind series.

APPENDIX B: How to Set a Dip Switch

DIP Switch Addressing Guide

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