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F120A Fire Alarm Panel

General Information Messages

This table provides descriptions for general information messages.
These messages are informative only and are shown in the current event queue along with defect events.

Message Description

Walk Test ON
ACF Disable ON
Door Holder Isolate ON

The specified button has been pressed. All of these conditions are common across all LCD mimics; pressing the button on any mimic will toggle the state, even if activated from another LCD display.

LED Mimic/WarnSys n Door
LCD Mimic n Door

The door is open on the specified mimic panel. This will generate a Door Interlock Defect if the main panel door is closed.

Input Active

A loop device configured as input-only (no Bell or Brigade flags set) has activated.

System Faults

These are faults detected on the F120 panel, other than those generated by loop devices.

Message Description
Loop nn open An open-circuit condition exists on the specified loop. Note that this may in fact be due to a line short between loop isolator devices which have activated to cause the loop to open.
Loop nn short A short-circuit condition exists on the specified loop. This will be generated where the short occurs between the loop driver and the first isolator device on the loop.
Loops x+y FAILED!(Timeout) The specified loops are offline, as the loop driver controlling them has failed to respond to commands sent by the Mainboard.
Warn Sys Fault
Ext Bell Fault
The specified Bell relay circuit is open or short-circuit.
ACF Monitor Fault The ACF relay is open or short-circuited.
Earth Leakage Fault (msg) The Earth monitor circuit has detected a connection to Mains Earth
The value of msg is one of high, low or high +low
Program ROM CRC Check Failed An error in the Program ROM area has been detected. This may indicate that panel operation will be unreliable.
Config ROM CRC Check Failed
An error in the Configuration ROM has been detected. The second line indicates the affected area. This may indicate that panel operation will be unreliable, but limited to the affected data only.
Memory Lock Switch Fault The Configuration Memory Lock switch is OFF, outside the Engineers Menu.
External Fault Active The EXT FLT input on the Master PCB is open
Door Interlock Fault The F120 Mainboard door has been closed with certain panel functions active
LED Mimic/Amp n Timeout
LCD Mimic n Timeout
The LCD/LED mimic (or amplifier) has not responded to commands sent by the F220 Mainboard.
LED Mimic/Amp n Extra
LCD Mimic n Extra
There are more devices detected on the RS-485 mimic bus than are programmed into the configuration.
LED Mimic/Amp n Disp Fault There is a defect in the LED mimic display board hardware.
LED Mimic/Amp n Interlock
LCD Mimic n Interlock
The interlock circuitry on the relevant mimic is off-normal.
LED Mimic/Amp n Ext Fault The External Fault input on the mimic is active
LED Mimic/Amp n Fault Some fault condition, other than the above, has occurred on the mimic.
Main LCD Timeout The primary LCD display board is not responding.
FanCtrl xxx DEFECT - StartFail A Fan Control Block has not detected its associated fan running (Status) signal in time after triggering its Start output.
FanCtrl xxx DEFECT - StopFail A Fan Control Blocks associated fan running (Status) signal has remained active for too long after triggering its Stop output.
RS-485  FAILURE !!
Shown on various LCD displays or LCD mimics when there is lost communications from the F220 Mainboard. These messages are generated on-board by the display hardware, as they are not receiving data from the panel.

Loop Device Messages

The list shows all possible messages generated by the devices on the analogue loop

Message Description
**ALARM** Applies to a loop input device – detector, Manual Call-Point, or input module; when the device activates. The alarm may be one of the following:
Smoke either an intelligent smoke detector or a conventional smoke detector activation from a Loop Responder input.
Call-Point either an MCP-type device or a Manual Call-Point activation from a Loop Responder circuit.
Heat thermal detector.
Fault Generally, Faults can be decoded to one of the causes listed below, however for some events this is not possible.
Pre-Alarm Applies to detectors only. The analogue value being returned is approaching the Alarm level.
Double Device Two loop devices on the same loop have been assigned the same address.
Missing A loop device that has been configured in the system memory is not present on the loop.
Extra Device The loop driver board has detected one or more of:  
  • Device(s) that don't exist in the panel configuration
  • Device(s) with loop address 000 (or 00 for modules)
  All detectors set to address 000 will have their LEDs turned on as though in alarm.
Modules set to address 00 will not have their LEDs turned on.
Maintenance Alarm The loop driver internal drift compensation has reached its threshold limit - the detector requires cleaning.
Type Mismatch A loop device does not match with the configuration assigned to it in the system memory.
Self-Test Fail A loop device has failed its regular auto test.
Alarm Acknowledged
An alarm from a loop device has been acknowledged through the ACK push-button on the front panel display.
A loop device has been isolated through the ISOLATE push-button on the front panel display or the User Menu.
Alarm Reset A loop device that was in 'Alarm' has been 'Reset' through the RESET push-button on the front panel display.
Low Fault Generated by sensing chamber defects in System Sensor detectors
High Fault Generated by sensing chamber defects in System Sensor detectors - this can mean that the chamber is too dirty for the detectors internal drift compensation algorithm to operate.
Short Circuit A monitored relay has a short-circuit.
Open Circuit Generated by open-circuits on either monitored loop relays or modules.
Board Reset A Pertronic Loop Responder has restarted.
Supply Fault There is either a 'Defect' in the detector supply on a Loop Responder, or the external power supply on a Pertronic Loop Relay board is out of range.
Isolator Active The on-board isolator relay on a Pertronic Loop Responder or Relay has activated due to a short-circuit on the loop.
AVF Stage 1 A loop device with AVF enabled has been triggered once and is in the AVF delay period awaiting a second trigger.
Input Active A loop device programmed with no output flags (i.e. one not generating an Alarm event) has activated.
Fan Relay Latched A Pertronic Fan Relay unit has been latched active by its associated Fan Controller unit.
Circuit Resetting A Pertronic Loop Responder circuit is in its self-timed reset phase after receiving a reset command from the panel.
Comms Error  Indicates that there is a loop device present at the location, but the data has been corrupted and cannot be interpreted.
Manual OFF  A SW3 device has been switched off.
Manual ON  A SW3 device has been switched on.

System Events

This table provides descriptions for system event messages.

Type Description
Fire Global Fire condition set.
Fault Global Fault condition set.
Pre-Alarm At least one detector is in pre-alarm state.
Common Isolate At least one device or zone is disabled.
Local MCP MCP input on F220 Mainboard.
Warn System On WARN SYSTEM ON active.
Ext Bell Isolate 
Warn Sys Isolate
Mains Failure Mains supply absent. Note that this is the actual state of the mains supply -it does not cause a Defect condition immediately.
Lamp Test Activated when the F220 is in Global Lamp Test mode. Provided for lamp test of external equipment.
Local lamp test will not trigger this event.
Note: LED outputs are overridden by Lamp Test and will therefore not operate, although they will be treated normally if used as a logical input.
Device Reset Active for 40 seconds after system reset or power-up, or 5 seconds after a device (ZMU or BMIF types only) is reset via the 'System Panel' Intended for use with devices, which require a power-down to unlatch an 'Alarm' condition.
Alarm Acknowledge Active for 5 seconds after any ‘Alarm’ condition is acknowledged.
External Fault Active when the EXT DEF input on the main PCB is open-circuit.
Door Open Active when any LCD Mimic or the main panel door is open.
Buzzer On Active when the F220 buzzer is activated.
MCP Alarm Active when any MCP device is in 'Alarm'.
Smoke Alarm Active when any smoke detector is in 'Alarm'.
Thermal Alarm Active when any heat detector is in 'Alarm'.
FanCtrl Latched Active when any latched Fan Control Block, or Relay, with the ZoneTrip flag set, is active and therefore must be reset via the global FanReset output.
FanCtrl Reset Active for at least 5 seconds (or when all FCB's have been processed) after the global FanReset output is activated.
FanCtrl Frozen Active once the FCB Freeze Time period has expired
ACF Isolate ACF ISOLATE control is active.
DHR Isolate DOOR HOLDER ISOLATE control is active.
Night Mode Active when panel is in Night mode
Warning System Isolate: Key-Switch Active when a BCO key-switch input is active.
Warning System Isolate - Button
Active when a pushbutton Silence Alarms input is active.
NBR Reset Set for 5 seconds after the global Non-Brigade Reset function has been activated.
Brigade Active whenever the main Brigade Fire relay is active.

Power Supply Fault Indication Table

Possible causes of F220 power supply faults are

Defect LCD Message Comments
Battery Missing Battery Disconnected Below 23.5V (checked every 10 seconds) when Mains supply is good
Battery Low Battery Low Below 24.36V when Mains is OFF or the charger is in Test mode. This fault is latched.
Supply Low Voltage Power Supply Low Fault Below 25.9V when Mains supply is good
Supply High Voltage Power Supply High Fault Above 28.8V
Mains Lost Mains Lost Door Interlock

Mains fail (after 60min)
Occurs immediately when the door is closed with the Mains disconnected.
Occurs 1 hour after the Mains is lost, if the door is closed.
Battery Test FailBattery Test Failure
Latched event generated whenever a low battery event is detected. The panel may return to normal after a low battery condition, but this message must be manually reset (using the RESET key)

Detector Sensitivity Table

Provides a guide to the detector sensitivity configured and the actual level required to generate an alarm.

Detector Sensitivity Table


  1. The actual sensitivity of the Acclimate detector at levels 0 and -2 is determined by the internal algorithms of the detector itself. In “noisy” environments the actual sensitivity decreases towards the lower sensitivity in the range (higher %/m value), and in “quiet” environments the higher sensitivity (lower %/m) is used.
  2. For the intelligent detectors (Acclimate, Pinnacle & FAAST), the detector outputs a set of fixed, discrete levels for each sensitivity setting. Pre-alarm condition is determined by looking for an active level at the next-highest setting There is no Pre-Alarm warning available on the highest sensitivity level, therefore it is recommended that detectors are not ‘Brigade Calling’ at the highest sensitivity level.
  3. At the lowest sensitivity (-4), the Acclimate, COPTIR and PTIR are Heat only detectors.
  4. See FAAST sensitivity table below

COPTIR/PTIR Sensitivity Table

The table below summarises the principal properties of the COPTIR and PTIR at the 6 available sensitivity settings.

COPTIR/PTIR Sensitivity Table

FAAST Sensitivities Table

The FAAST has 5 named alarm threshold values that are locally assigned to the device via the PipeIQ configuration software as follows:

FAAST Sensitivities Table