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Power off
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Edwards EST EST4

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What This Code Means

The system has lost primary AC power and is running on battery backup.

Common Causes

  • 1Tripped AC breaker
  • 2Local power outage
  • 3Disconnected power supply wiring

Resolution Steps

Restore AC power to the panel. Check the primary power supply module and incoming mains wiring.

Manual References(2)

Field Notes

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Related Codes

SUPERVISORYThe control unit enters the supervisory state when a point signals a supervisory condition, such as a valve tamper switch activation or a system-level supervision fault.A short is detected on the loopA shorted circuit has been detected on the Signature loop controller (SLC) wiring, which typically reports a trouble condition on all devices on that circuit.TroubleGeneral fault within the system hardware or wiring that prevents normal operation.Ground faultThe system detects a low resistance path (approximately 10 kΩ or less) between a circuit conductor and earth ground, or voltages outside the range of 12.3 VDC to 16.8 VDC during testing.bad type faultThis condition occurs when a substituted device is a different model than the suspect device but is preprogrammed with the same device address.

Related Questions

How do I perform a walk test on the EST4, and can individual SLC loops be isolated for testing?What are the battery sizing requirements for the EST4, and what is the replacement procedure?What is the maximum SLC loop length and device count per loop on the EST4?
All EST4 trouble codesEST4 panel page