ETA Systems ETA-20SH Power Supply User Manual


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Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
TROUBLESHOOTINGTHEECMMODULEWITHANETA-ECS3
Note: All troubleshooting should be done by a certified electrician.
Issue1:IncomingACLEDontheECMisnotilluminated.
PossibleCause#1: Incoming AC Mains circuit breaker has tripped due to excessive load.
ActionNeeded: Check the AC outlet that the ETA-20SH is plugged into for 120V AC voltage. If no voltage is present, check to
see if the AC outlet is on a GFI and check to see if it was tripped. If it has not been tripped trace the AC Mains
outlet back to the electrical panel and check the AC Mains breaker to see if it is tripped.
PossibleCause#2: AC Mains power is ok (120V), internal 20A (ETA-ECM20, ETA-ECM20M, ETA-20SH) Slow Blow fuse is blown.
ActionNeeded: Open ECM unit and replace the fuse with a Slow Blow type.
Issue2:ACFaultLEDisFlashingontheECM.
PossibleCause: Although the Clamping Suppression circuit virtually assures protection from most transient voltage spikes and
surges, nature has a way of occasionally creating electrical forces that are beyond the capabilities of any device
to absorb without some degree of damage. In the rare instance that this occurs, the clamping circuit can be
damaged during the suppression.
ActionNeeded: The unit will need to be repaired or replaced. It is important to have all equipment that was connected to that
ACMainsLineinspectedforproperoperation.Note:TheunitwillstilloperatebutnoACSpikeorSuppression
protection will be available.
Issue3:UnitissettoExternalTrigger,theincomingACLEDisilluminatedbuttheActiveLEDisnotilluminated.
PossibleCause#1 External DCV from the ETA-ECS3 is not connected across the “+” and “G” terminals.
PossibleCause#2 External DCV voltage polarity is not correct across the “+” and “G” terminals.
PossibleCause#3 External DCV voltage is too low to activate the trigger circuit. Must be a minimum of 5VDC to activate the
ECM module. Possible short in the wiring system.
Issue4:ECMActiveLEDisnotilluminated,incomingLEDisilluminatedbuttheAbnormalLEDontheETA-ECS3isflashing.
PossibleCause The AC Mains Voltage exceeded 127VAC or the voltage dropped below 107VAC activating the “EVS”
shutdown.
ActionNeeded The ETA-ECS3 must be re-sequenced to turn off the LED, measure the AC mains before turning On. If the
voltage is between 117VAC and 123VAC you may proceed to reset the ETA-ECS3 by restarting the start up
sequence.Note:Itisimportanttohaveallequipmentthatwasconnectedtothemodulebeinspectedfor
proper operation. If the problem persists, contact your local power company for the cause of unstable AC line
conditions.
ETA-20SH
AC Power Conditioning & Suppression Module
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