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VCCX2 Controller Technical Guide
RSM Module (1-4) Operating Alarm
This alarm indicates numerous alarm conditions. Please refer to
the individual RSM Technical Guides for details.
Title 24 (FDD) Economizer Alarms
Economizer Temperature Sensor Failure
Outside Air or Supply Air Temperature Sensor is shorted or
missing.
Economizer Not Economizing When it Should
Economizer is enabled but not following the desired Economizer
position commanded.
Economizer Is Economizing When It Should
Not
Economizer is not enabled but the feedback signal indicates a
position more open than the minimum.
Economizer Damper Not Modulating
Economizer is enabled but not within 10% of desired position
within 150 seconds.
Economizer Excess Outdoor Air Filter
Economizer feedback is lost or Economizer is not following
commanded position.
SEQUENCE OF OPERATIONS
Title 24 Economizer Alarms
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