Maintenance; Troubleshooting - Price Antec controls CAVA Manual

MAINTENANCE

Troubleshooting

Symptom
CAVA is non-responsive
Binary Output not functioning
Sash Height reading does not
match the actual sash height
Sidewall Velocity Sensor (SVS)
reading is not stable/accurate
FVM or SVS not recognized by
CAVA
Laptop unable to connect to
CAVA
BACnet is not communicating
22 | CAVA – Manual | AntecControls.com
Solution
Check the power connection to CAVA.
Ensure CAVA has 24VAC power with a voltmeter.
Cycle power to CAVA.
Ensure CAVA has 24VAC power.
Ensure the Binary Output has been configured to the appropriate usage.
CAVA provides a low side binary output. Ensure that the device is connected to a 24VAC supply and that its
common is connected to a CAVA binary output.
Ensure the SPS is installed according to one of the methods outlined in this manual.
If using a cable clamp, ensure it has not slipped.
Confirm the sash is not attached to any rotational shafts that might not move linearly with the sash's movement.
Check that the cable is free from obstruction.
Check that the cable moves smoothly and that are no breaks in the cable.
Recalibrate the SPS.
Ensure the SVS is installed according to the method outlined in the
Ensure the power and CANbus wiring is fully connected on both ends.
Ensure the tubing is fully connected to the SVS.
Ensure tubing length is less than 5 feet.
Re-calibrate the sensor.
Check diffuser location. If air is flowing across the face of the sash due to diffusers, pedestrians, or doors, then
you may experience erratic readings.
Confirm CANbus wiring according to the typical wiring shown in the
project submittal package.
Ensure the end of line device on the CANbus segment is terminated by connecting a 120 ohm resistor between
the CANH and CANL network terminals.
Disable any firewalls that may be active.
Confirm wiring according to the typical wiring shown in this manual or in the project submittal package.
Ensure the RJ45 end has been crimped according to T586B.
Ensure there are no duplicate MAC addresses on the MS/TP segment.
Ensure there are no duplicate Device Instances in the building/facility.
Ensure the CAVA's Baud rate matches the rest of the network.
Devices by Others on the BACnet trunk can cause communication issues. If TSI is on the network, make sure their
devices are addressed before the Antec Controls devices.
CAVA - MANUAL
Sidewall Velocity Sensor section.
Fume Hood Accessories section or in the