Below is the list of fault codes that can be generated by the FAAST
LT unit. They will be displayed in the Event Log (up to 2244 events
can be recorded before being overwritten).
APPENDIX B
FAAST LT FAULT CODES
FAULT /
ALERT
SHORT NAME DESCRIPTION SA LB NOTES
Fault [F001] CONFIGURATION
FAULT
Device configuration data
is not available.
X X This fault is given when at power-on EEPROM data is
not available (device cannot read its EEPROM) or
when data is wrong (bad checksum) or when data is
invalid (not in correct range). When device is in
WRONG CONFIGURATION fault it enters
automatically into maintenance mode, waits for USB
connection and activates only general fault relay.
Note that in WRONG CONFIGURATION, if RESET is
pressed for 2 seconds, device will restart. Normal key
functions are not available.
Fault [F002] EEPROM FAULT Device is unable to access
its EEPROM.
X X
Fault [F004] EXTERNAL INPUT
FAULT
Device external line input
fault.
X X Given when external input is configured to give fault
when not in normal state
Fault [F005] ULTRASONIC
CIRCUIT FAULT
CH1
The ultrasonic circuit of
channel 1 is not working
properly.
X X
Fault [F006] SOUNDER FAULT
CH1
The sounder 1 output is in
short or open circuit.
X X Please check the sounder circuit and the 47K end of
line resistor.
Fault [F007] SENSOR
COMMUNICATION
FAULT S1
Error in communication
with sensor 1.
X X In SA variant, it is given when sensor doesn’t answer
to FAAST LT unit or sensor reports low chamber
signal.
In LB, sensor alarm mode, it is given when sensor
remote output is OFF for configured timeout.
Fault [F008] SENSOR
INITIALIZATION
FAULT S1
Error in initialization of
sensor 1.
X
Fault [F010] FAN FAULT CH1 Problem with channel 1
fan
X X Fan is broken or has stopped
Fault [F011] FLOW
INITIALIZATION
FAULT CH1
Channel 1 flow
initialization failed.
X X Impossible to set a fan speed to have the correct flow
Fault [F012] LOW FLOW FAULT
CH1
Channel 1 flow is below
the configured limit.
X X User can configure a specific delay between fault
condition and fault indication (0-240 s)
Fault [F013] HIGH FLOW FAULT
CH1
Channel 1 flow is over the
configured limit.
X X User can configure a specific delay between fault
condition and fault indication (0-240 s)
Fault [F014] ULTRASONIC
CIRCUIT FAULT
CH2
The ultrasonic circuit of
channel 2 is not working
properly.
X X
Fault [F015] SOUNDER FAULT
CH2
The sounder 2 output is in
short or open circuit.
X X Please check the sounder circuit and the 47K end of
line resistor.
Fault [F016] SENSOR
COMMUNICATION
FAULT S2
Error in communication
with sensor 2.
X X In SA variant, it is given when sensor doesn’t answer
to FAAST LT unit or sensor reports low chamber
signal.
In LB, sensor alarm mode, it is given when sensor
remote output is OFF for configured timeout.
Fault [F017] SENSOR
INITIALIZATION
FAULT S2
Error in initialization of
sensor 2.
X
Fault [F019] FAN FAULT CH2 Problem with channel 2
fan.
X X Fan is broken or has stopped
Fault [F020] FLOW
INITIALIZATION
FAULT CH2
Channel 2 flow
initialization failed.
X X Impossible to set a fan speed to have the correct flow
Fault [F021] LOW FLOW FAULT
CH2
Channel 2 flow is below
the configured limit.
X X User can configure a specific delay between fault
condition and fault indication (0-240 s)
Fault [F022] HIGH FLOW FAULT
CH2
Channel 2 flow is over the
configured limit.
X X User can configure a specific delay between fault
condition and fault indication (0-240 s)
Fault [F023] HIGH POWER
FAULT
Device supply voltage is
over 32.5 V (nominal).
FAAST LT unit stopped.
X X Check the voltage.
Alert [A001] LOOP BASED
CONFIGURATION
FAULT
Device loop based data is
not available.
X
Alert [A002] REAL TIME CLOCK
ALERT
Device is unable to read or
set its real time clock.
X X Logs are written without date.
Alert [A003] INVALID TIME
BASE ALERT
The date stored in device
real time clock is not valid.
X X Logs are written without date. Please update date.
RTC keeps the time with power off for about 30 years.
Alert [A004] HIGH
TEMPERATURE
ALERT
Device temperature is
over the limit.
X X
SA denotes a Stand Alone unit
LB is a Loop Based (addressable) unit
An x denotes applicable to either SA, LB or both.
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