AUTOFLAME Mk8 MM - Page 61

Fault Message Description
554 Fuel Pressure Sensor Fault Fault or no comms with fuel pressure sensor
 Warning or lockout if VPS and/or pressure limits enabled in option/parameters 125 – 128 (if
warning, MM uses commissioned pressure)
 Check wiring and screen on terminals 31 – 34
555 Air Pressure Sensor Fault Fault or no comms with air pressure
sensor
Warning/Lockout
– option 148

 Check wiring and screen on terminals 31 – 34
 Lockout if option 148 is set for air pressure sensor in flame safeguard
560 Fully Metered Air Adjustment
Failure
Air adjustment has reached limit and
fuel-air ratio still not met
Alarm/Warning –
exp option 151
 Check for changes affecting combustion including fuel/air pressure, temperature etc.
 Warning if expansion option 151 is set to 1
 Warning and air adjustment is disabled if expansion option 151 is set to 2
580 Servo Control I/O Unit
Communications Fault
Fault or no comms with the servo
control IO module
Alarm
 Check for wiring on terminals 6T+ and 6T-
581 Servo Control I/O Unit
Channel 1 Output Fault
4-20mA output detects open circuit Alarm
 Check wiring on output 1 on I/O module
582 Servo Control I/O Unit
Channel 2 Output Fault
4-20mA output detects open circuit Alarm
 Check wiring on output 2 on I/O module
583 Servo Control I/O Unit
Channel 3 Output Fault
4-20mA output detects open circuit Alarm
 Check wiring on output 3 on I/O module
584 Servo Control I/O Unit
Channel 4 Output Fault
4-20mA output detects open circuit Alarm
 Check wiring on output 4 on I/O module
585 Servo Control I/O Unit
Channel 7 Output Fault
4-20mA output detects open circuit Alarm
 Check wiring on output 5 on I/O module
586 Servo Control I/O Unit
Channel 1 Input Fault
4-20mA input less than 3mA Alarm
 Check wiring on input 1 on I/O module
587 Servo Control I/O Unit
Channel 2 Input Fault
4-20mA input less than 3mA Alarm
 Check wiring on input 2 on I/O module
588 Servo Control I/O Unit
Channel 3 Input Fault
4-20mA input less than 3mA Alarm
 Check wiring on input 3 on I/O module
589 Servo Control I/O Unit
Channel 4 Input Fault
4-20mA input less than 3mA Alarm
 Check wiring on input 4 on I/O module
590 Servo Control I/O Unit
Channel 7 Input Fault
4-20mA input less than 3mA Alarm
 Check wiring on input 5 on I/O module
*When option 12 is set to 3 for trim and combustion limits, the combustion limits are evaluated once
per trim cycle. A combustion limit error will occur if the current exhaust value has crossed the
combustion limit for the number of trim cycles set in parameter 17 (the default value is 3 cycles).
22.05.2017 Mk8 MM End User Guide Page 56
4 Errors and Lockouts