Troubleshooting; Venturi Valve Troubleshooting; Electric Coil Troubleshooting - Price Antec Controls VENTURI VV Series Manual

TROUBLESHOOTING

Venturi Valve Troubleshooting

Symptoms
Noise
Actuator does not operate
for Variable Volume Valves
Actual airflow does not
match airflow feedback
Pressure is in alarm on
module, but airflow is
present

Electric Coil Troubleshooting

Symptoms
No Heat
Heat Cycles On/Off
28 | VV – Manual | AntecControls.com
Possible Cause
Foreign material in valve
Vibrating duct work
Confirm that power is being delivered to the unit
Verify control signal
Verify that the disconnect switch (where available) is not open
Verify that the fuse (where available) is not blown
Verify there are no ductwork obstructions
Confirm static pressure is within specified range
Confirm that there is no blockage inside the duct or valve
Confirm that there is no damage to any tamper proof paint
Verify that there are no ductwork leaks before or after the valve
Verify that the valve is installed in the correct orientation
Verify that the valve is installed in the correct airflow direction
Measure static pressure across valve on available brass tees to confirm pressure reading
Ensure that red tubing runs from the valve inlet to the high (red) port and the green tubing runs from the valve
discharge to the low (green) port
Verify that the valve is installed in the correct airflow direction
Ensure the tubing is not clogged with liquid or foreign debris
Possible Cause
Disconnection Switch
Fuses
Wiring
Transformers
Automatic Temperature
Limit-Switch
Manual Temperature Limit-
Switch
Airflow Switch
Automatic Temperature
Limit-Switch
Manual Temperature Limit-
Switch
Airflow Switch
Potential Solution
Check to see if the door interlock is active
Use a Digital Multimeter (DMM) to measure resistance (R) of each fuse, should read a
negligible amount. If R is in MΩ, fuse most likely is blown, order a new fuse from
replacement list
De-energize panel and trace wires with wiring diagram to check for loose or
broken/burned wires
The transformer provides 24 volts to secondary; with primary voltage active, use a
digital multi-meter to measure the secondary: 24V ± 2V, if not in this range, replace
transformer
Increase airflow to allow coils to cool faster, switch will automatically reset
Use the metal tab (if applicable) to press towards the switch to reset it, the airflow
may have to be increased
Consult "Airflow Switch" Troubleshooting section
Increase airflow to allow coils to cool faster, switch will automatically reset, check to
see if airflow to coils is unobstructed
Use the metal reset tab (if applicable), press it toward the switch to contact the
switch and reset it, airflow should be increased, check to see if airflow to coils is free
Consult "Airflow Switch" Troubleshooting section
VV