Troubleshooting Guide - Distech Controls ECB-VAV UUKL Installation Manual

Troubleshooting Guide

Controller is powered but does not turn on
Fuse has blown
Power supply polarity
Controller cannot communicate on a BACnet MS/TP network
Absent or incorrect supply voltage
Overloaded power transformer
Network not wired properly
Absent or incorrect network termination
Max Master parameter
There is another controller with the same MAC
Address on the BACnet MS/TP data bus
There is another controller with the same Device
ID on the BACnet intranetwork
Controller communicates well over a short network, but does not communicate on large network
Network length
Wire type
Network wiring problem
Absent or incorrect network termination
Number of controllers on network segment
exceeded
Max Master parameter
There is another controller with the same MAC
Address on the BACnet MS/TP data bus
There is another controller with the same Device
ID on the BACnet intranetwork
Hardware input is not reading the correct value
Input wiring problem
Configuration problem
Over-voltage or over-current at an input
Open circuit or short circuit
Hardware output is not operating correctly
Fuse has blown (Auto reset fuse)
Output wiring problem
Configuration problem
0 to 10V output, 24VAC powered actuator is not
moving.
0 to 10V output, 24VAC powered actuator is not
moving.
0 to 10V output, 24VAC powered actuator is not
moving.
Wireless devices not working correctly
Device not associated to controller
Power discharge
Disconnect the power. Check the fuse integrity. Reconnect the power.
Verify that consistent polarity is maintained between all controllers and the transformer. Ensure that the 24VCOM terminal of
each controller is connected to the same terminal on the secondary side of the transformer. See Power Wiring.
1. Check power supply voltage between 24VAC ±15% and 24VCOM pins and ensure that it is within acceptable limits.
2. Check for tripped fuse or circuit breaker.
Verify that the transformer used is powerful enough to supply all controllers.
Double check that the wire connections are correct.
Check the network termination(s).
Configure the maximum number of master device on the MS/TP network in all devices to the controller's highest MAC
address used on the MS/TP trunk.
Each controller on a BACnet MS/TP data bus must have a unique MAC Address. Look at the MAC Address DIP switch on
the faceplate or under the cover of the controller. If it is set to 0 (all off), use an Allure EC-Smart-Vue sensor to check the
MAC Address.
Each controller on a BACnet intranetwork (the entire BACnet BAS network) must have a unique Device ID. Use an Allure
EC-Smart-Vue sensor to check the Device ID of each controller.
Check that the total wire length does not exceed the specifications of the Network Guide , or for the ECB-VAV UUKL
controller, refer to the Distech Controls UUKL Smoke Control System Design Guide .
Check that the wire type agrees with the specification of the Network Guide , or for the ECB-VAV UUKL controller, refer to
the Distech Controls UUKL Smoke Control System Design Guide .
Double check that the wire connections are correct.
Check the network termination(s). Incorrect or broken termination(s) will make the communication integrity dependent upon
a controller's position on the network.
The number of controllers on a channel should never exceed 50. Use a router or a repeater in accordance to the Network
Guide , or for the ECB-VAV UUKL controller, refer to the Distech Controls UUKL Smoke Control System Design Guide .
Configure the maximum number of master device on the MS/TP network in all devices to the controller's highest MAC
address used on the MS/TP trunk.
Each controller on a BACnet MS/TP data bus must have a unique MAC Address. Look at the MAC Address DIP switch on
the faceplate or under the cover of the controller. If it is set to 0 (all off), use an Allure EC-Smart-Vue sensor to check the
MAC Address.
Each controller on a BACnet intranetwork (the entire BACnet BAS network) must have a unique Device ID. Use an Allure
EC-Smart-Vue Series Communicating Sensor to check the Device ID of each controller.
Check that the wiring is correct according to this manual and according to the peripheral device's manufacturer.
Using EC-gfxProgram, check the configuration of the input. Refer to the EC-gfxProgram user guide for more information.
An over-voltage or over-current at one input can affect the reading of other inputs. Respect the allowed voltage / current
range limits of all inputs. Consult the appropriate datasheet for the input range limits of this controller.
Using a voltmeter, check the voltage on the input terminal. For example, for a digital input, a short circuit shows
approximately 0V DC and an open circuit shows approximately 5V DC.
Disconnect the power and outputs terminals. Then wait a few seconds to allow the auto-reset fuse to cool down. Check the
power supply and the output wiring. Reconnect the power.
Check that the wiring is correct according to this manual and according to the peripheral device's manufacturer.
Using EC-gfxProgram, check the configuration of the input. Refer to the EC-gfxProgram user guide for more information.
Check the polarity of the 24VAC power supply connected to the actuator while connected to the controller. Reverse the
24VAC wire if necessary.
Check the polarity of the 24VAC power supply connected to the actuator while connected to the controller. Reverse the
24VAC wire if necessary. Check the jumper settings for the external power supply as shown in Table 3.
Check the polarity of the 24VAC power supply connected to the actuator while connected to the controller. Reverse the
24VAC wire if necessary.
Using EC- gfx Program, check the configuration of the input. Refer to the EC-gfxProgram user guide for more information.
1. Recharge device with light (if solar-powered) or replace battery (if battery-powered),
2. Ensure sufficient light intensity (200lx for 4 hours/day).
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