AUTOFLAME Mk8 MM - 16.8 Faults

16 Heat Flow
Mk8 MM Manual Page | 294
16.8 Faults
The table below show the faults which are directly related to the heat flow function.
Fault
Type
Message
Description
440
Warning
Temperature Sensor T1 Fault
Fault or no comms with T1 sensor
•
Check wiring and screen on terminals –and T1
441
Warning
Temperature Sensor T2 Fault
Fault or no comms with T2 sensor
• Check wiring and screen on terminals – and T2
442
Warning
Temperature Sensor T3 Fault
Fault or no comms with T3 sensor
• Check wiring and screen on terminals – and T3
443
Warning
Make Up Flow Meter Fault
Fault or no comms with make up flow meter
• Check wiring and screen on terminals F- and MF
444
Warning
Condensate Flow Meter Fault
Fault or no comms with condensate flow meter
• Check wiring and screen on terminals F- and CF
650
Alarm
Coil Temperature Shutdown
Threshold
Expansion option 131 threshold has been
exceeded
• Check boiler’s coil temperature
• Check expansion option 131.
651
Alarm
Exhaust Temperature Shutdown
Threshold
Expansion option 131 threshold has been
exceeded
• Check the exhaust gas temperature
• Check expansion option 131.