001 Loop 1 fault: iO1000 Trouble Code | Fire Alarm Resource Center
001 Loop 1 fault
trouble
Edwards EST iO1000
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What This Code Means
A short or open was detected on the loop affecting the communications between the panel and the devices on the loop.
Common Causes
1Short circuit on the loop
2Open circuit on the loop
3Communication failure between the panel and devices
Resolution Steps
Check the loop card LEDs (DS3 or DS4) where a solid ON LED indicates an open fault and a flashing LED indicates a short, then navigate to the Reports menu > Diagnostics > Loop Comm Check to generate a diagnostic report, and perform a complete check of installed field wiring and devices.
