What do Fire-Lite MS-9200UDLS trouble messages mean and how do I clear them

Updated Source: 52750 Rev MSource: 52750 Rev M
Quick answer

On the Fire-Lite MS-9200UDLS a trouble shows TROUBL on the LCD with the device type, the adjective and noun you programmed, the trouble description and the device address. Press Acknowledge/Step to silence the piezo, fix the cause the description points to (OPEN, SHORT, INVREP, DIRTY1, INV ID and so on), and the trouble clears on its own: the panel auto-restores cleared troubles and goes back to System All Normal.

Steps

From: MS-9200UDLS Series manual, pp. 135-137

  1. Read the whole display
    Line 1 is the event type (TROUBL) and the device type such as SMOKE (PHOTO), HEAT, MONITOR or CONTROL. Line 2 is the adjective and noun you programmed for the point. Line 3 is the trouble description.
  2. Read the address on line 4
    After the time and date comes the device address. In 1D001, 1 is the SLC loop, D means detector and 001 is the device address.
  3. Silence the panel
    Press Acknowledge/Step (or Alarm Silence). The pulsing piezo stops and the Trouble LED goes from flashing to steady. One press acknowledges every active trouble at once.
  4. Match the description to a cause
    OPEN is an open circuit, SHORT is a shorted circuit, INVREP is an invalid reply (a hardware or communication problem in the device), TEST F is a failed automatic test, INV ID is the wrong type programmed for the installed device.
  5. Check the LEDs for panel-level troubles
    The Ground LED flashes for a ground fault (zero impedance to ground), the Battery LED flashes for low battery voltage, and the Disabled LED flashes when a zone, NAC, detector or module is disabled in programming.
  6. Fix the cause
    At the address shown: repair the wiring for OPEN or SHORT, clean or replace a detector for DIRTY1 or DIRTY2, or correct the programmed type code for INV ID.
  7. Let it restore
    When the condition clears the panel sends a clear trouble message to history. With no other troubles, supervisory or fire conditions active it returns to System All Normal. Auto-restore clears troubles even if they were never acknowledged.

Specs & limits

From: MS-9200UDLS Series manual, pp. 124, 136-137

DIRTY1Detector is near but below the allowed alarm limit and needs maintenance
DIRTY2Detector has been within 80% of its alarm threshold for 24 hours; needs immediate maintenance
INV IDWrong device code (Type ID) programmed for the installed device
SW TBLModule failed the test of its Class A switching relay
Trouble piezoPulses 1 second On and 1 second Off
Central station codeGROUND FAULT reports Contact ID 310, LOW BATTERY 302, AC_FAIL 301

Common mistakes

From: MS-9200UDLS Series manual, pp. 135-137

  • Pressing Alarm Silence with only troubles active acts like Acknowledge/Step but also lights the Alarm Silenced LED. That is normal.
  • A ground fault turns on the Ground LED as well as the trouble message. Isolate the wiring causing it before you connect a printer or PC.
  • BLOCK and ALIGN on a beam detector mean the beam is totally blocked or the detector is in alignment mode, not that the head is bad.

Applies to

MS-9200UDLS · Series manual P/N 52750:M

Also asked as: “how to clear fire lite trouble”

Sources

  1. MS-9200UDLS Series Manual, p. 136 (52750 Rev M)
  2. MS-9200UDLS Series Manual, p. 137 (52750 Rev M)
  3. MS-9200UDLS Series Manual, p. 135 (52750 Rev M)
  4. MS-9200UDLS Series Manual, p. 124 (52750 Rev M)
Was this right?