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NAC 1 trouble
trouble

Edwards EST iO1000

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What This Code Means

An open or short was detected on NAC 1 or there is a problem with the EOL

Common Causes

  • 1Missing 15K Ohm EOL resistor
  • 2Broken wire in the notification circuit
  • 3Shorted horn or strobe unit

Resolution Steps

Check for the presence of the End-of-Line resistor. Measure the circuit resistance to determine if an open or short exists.

Manual References(3)

Field Notes

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Related Codes

Internal faultThe control panel detected an internal hardware or software errorDialer line 1 faultA ground fault or line fault was detected on line 1 of the dialerSupervisoryA supervisory event is taking place on the control panel, indicating an off-normal condition on a monitored circuit or device.Loop 1 uncfgrd troubleA device on loop 1 that is not programmed went into troubleLoop 1 over limitsThere are too many devices on loop 1

Related Questions

How do I address devices on the iO1000?How do I configure the iO1000 NAC circuits for Class A wiring instead of the default Class B?What Signature series devices are compatible with the iO1000 SLC loop, and can I mix legacy and newer devices on the same loop?
All iO1000 trouble codesiO1000 panel page