48/50PD
Initiate economizer calibration (Service Test→INDP→ E.CAL) using the Service Test menu. The economizer calibration procedure will try to find new maximum open and closed positions. If the alert does not clear automatically after the calibration procedure is complete, investigate what is limiting economizer rotation. After that step, run another calibration, but first power off unit (spring return the damper), loosen the actuator clamp, and while pushing the damper closed tighten the clamp. This alert resets automatically.
SEconomizer Damper Actuator Torque Above Load Limit
This alert occurs when the actuator load is too high. Investigate to determine what is increasing damper load and verify that the actuator is the correct size for the unit. This alert resets automatically.
SEconomizer Damper Actuator Hunting Excessively
This alert occurs when the commanded damper position is changing too rapidly. The stop jog ration must be less than 21% to clear this alert. Leave the actuator powered with no signal for a few hours to allow the ratio to decrease (may have to wait longer than a few hours). If the alert continues, determine if the
ECB or actuator is bad. This alert resets automatically.
SEconomizer Damper Stuck or Jammed
This alarm occurs when the actuator senses it can no longer
move. Investigate what is stopping the rotation of the actuator and fix. This alert resets automatically.
SEconomizer Damper Actuator Mechanical Failure
This alert occurs when the actuator senses a catastrophic failure.
Investigate actuator and replace if necessary. This alert resets automatically.
SEconomizer Damper Actuator Direction Switch Wrong Position This alert occurs when the economizer damper direction switch is in the wrong position. The direction switch should be in the clockwise position and the actuator should be mounted so that the CW face of the actuator is accessible. Correct if necessary. This alert clears automatically.
Alert Code T415 - IAQ Input Out of Range
This alert occurs when the IAQ input (on ECB) is less than 3.5 mA and the sensor is configured as installed. IAQ operation will be disabled. Check sensor and wiring. This alert clears automatically.
Alert Code T416 - OAQ Input Out of Range
This alert occurs when the OAQ input (on ECB) is less than 3.5 mA and the sensor is configured as installed. OAQ operation will be disabled. Check sensor and wiring. This alert clears automatically.
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