19 Errors & Lockouts
Mk8 MM Manual Page | 380
19.3 Alarms and Warnings
Alarms and warnings are faults detected with the system operation. If an alarm occurs, the burner will stop
running, and if a warning occurs, the burner will continue to run. The following options/parameters set
whether system operation faults are set as alarms or warnings:
Option 13 EGA Fault Response
Option 14 Warning Response
Expansion Option 9 Burner Operation at High Water
Expansion Option 20 Burner Operation on Feedwater Control Fault
Expansion Option 88 Action on Pressure Sensor Fault
• Alarm or warning depending on option 13
• Check EGA for fault description
MM has lost communications with EGA
• Alarm or warning based on option 13 (warning if option 12 is set to monitoring only)
• Check parameter 10 is set to correct EGA version
• Check EGA operating mode is selected as ‘EGA with MM’
• Check wiring between EGA and MM (terminals 25 and 26 on MM)
2
2
value is above upper limit offset of commissioned value*
• Alarm or warning depending on option 13
• Check exhaust gas readings and option 19
2
2
value is below absolute limit*
• Alarm or warning depending on option 13
• Check exhaust gas readings and option 25
2
2
value is below lower limit offset of commissioned value*
• Alarm or warning depending on option 13
• Check exhaust gas readings and option 22
2
2
value is above upper limit offset of commissioned value*
•
Alarm or warning depending on option 13
• Check exhaust gas readings and option 20
2
2
value is above absolute limit*
• Alarm or warning depending on option 13
• Check exhaust gas readings and option 26
2
2
value is below lower limit offset of commissioned value*
• Alarm or warning depending on option 13
• Check exhaust gas readings and option 23
CO value is above upper limit offset of commissioned value*
• Alarm or warning depending on option 13
• Check exhaust gas readings and option 21
CO value is above absolute limit*
• Alarm or warning depending on option 13
• Check exhaust gas readings and option 27
NO value is above upper limit offset of commissioned value*
• Alarm or warning depending on option 13
• Check exhaust gas readings and parameter 94
Exhaust Temperature Upper
Limit
Exhaust temperature is above upper limit offset of commissioned
value*
• Alarm or warning depending on option 13
• Check exhaust gas readings and parameter 96