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Edwards Est
Io1000
098

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Troubleshooting Tip

When diagnosing codes, always check the event history log first. Many trouble conditions are intermittent and tied to environmental factors like temperature or moisture.

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NAC 1 trouble: iO1000 Trouble Code | Fire Alarm Resource Center

NAC 1 trouble

trouble

Edwards EST iO1000

91 views·0 field notes

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)

1edwards estiO64 and iO1000Datasheet2020p. 1Open

2edwards estiO64 and iO1000Datasheet2023p. 1Open

3edwards estiO64 and iO1000Installation2015p. 186, 160, 61, 187, 189 +2Open

Field Notes

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Related Codes

Internal faultThe control panel detected an internal hardware or software error Dialer delivery failThe dialer failed to deliver a message to the receiver Dialer line 1 faultA ground fault or line fault was detected on line 1 of the dialer Loop 1 uncfgrd troubleA device on loop 1 that is not programmed went into trouble SupervisoryA supervisory event is taking place on the control panel, indicating an off-normal condition on a monitored circuit or device.

Related Questions

How do I address devices on the iO1000?How do I set up the SA-DACT dialer module in the iO1000 for dual-line DACT reporting using Contact ID format?What Signature series devices are compatible with the iO1000 SLC loop, and can I mix legacy and newer devices on the same loop?

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