STYLE 6 POS. LOOP x / STYLE 6 NEG. LOOP x / STYLE 6 SHORT LOOP xtrouble

Notifier NFS2-640: STYLE 6 POS. LOOP x / STYLE 6 NEG. LOOP x / STYLE 6 SHORT LOOP x

Notifier NFS2-640·0 views·0 field notes

What This Code Means

The control panel has detected a trouble (open or short) on an SLC loop configured for Style 6 or Style 7. The panel drives both ends of the loop to maintain communication in an unsupervised method.

Common Causes

1Open circuit on the positive side of the loop
2Open circuit on the negative side of the loop
3Short circuit on the loop

Resolution Steps

Identify the specific fault (positive open, negative open, or short) on the indicated loop, correct the wiring condition, and press the RESET button to clear the latching trouble.

Manual References(3)

1notifierNFS-640Operations2003Open

2notifierNFS2-640Operations2013p. 75Open

Field Notes

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Related Codes

INST ON L1No devices are installed on the system.STYLE 6 POS. LOOP xThere is an open circuit on the positive side of loop x.INVREPThe device has returned a response to the panel that the panel did not expect.Low Chamber valueA maintenance warning level indicating that the detector chamber reading is too low, which typically signifies a hardware malfunction.FREEZE WARNINGThe temperature read by a Heat+ or Acclimate Plus™ detector has dropped below the low-temperature threshold, typically 40°F (4.44°C).