Operating Mode / Heating Appliance Burner Status - Wolf MGK-2-390 Installation Instructions Manual

22. Operating mode / Heating appliance burner
Heating appliance operating mode
Display indication
Start
Standby
Heating mode
DHW mode
Emissions test
Antifreeze HC
Antifreeze DHW
Frost protection
Heating run-on
DHW run-on
Parallel mode
Test
Cascade
BMS
Heating appliance burner status
Display indication
OFF
Pre-flush
Ignition
Stabilisation
Soft start
ON
Cycle block
Op without b.
Flue gas damper
dT too wide
dT Tboil-eSTB
Valve test
Grad. control
Gas pressure
Fault
Post-flush
3063772_201507
status
Function
Start the appliance
No heating or DHW demand
Heating mode, at least one heating circuit demands heat
DHW heating with cylinder, cylinder temperature is below set value
Emissions test mode active, heating appliance running at maximum power
Boiler frost protection function, boiler water temperature below frost protection limit
Frost protection function of DHW cylinder active, cylinder temperature below frost
protection limit
System frost protection active, outside temperature below frost protection limit
Heating circuit pump run-on active
Cylinder primary pump run-on active
Heating circuit pump and cylinder primary pump active in parallel
Relay test function has been activated
Cascade module in system active
Appliance is controlled by building management system (BMS)
Function
No burner demand
Fan operation before burner start
Gas valves and ignition unit are active
Flame stabilisation after safety time
After flame stabilisation in heating mode, the burner runs at low burner power for
the duration of the soft start to prevent cycling
Burner operational
Burner block after a burner cycle for the duration of the cycle block
Operation without burner, input E1 closed
Waiting for feedback from flue gas damper (input E1)
Temperature spread between boiler water temperature sensor and return
temperature sensor too wide
Temperature spread between eHLSC1/eHLSC2 and boiler sensor too wide
Gas valve test
Boiler water temperature rising too fast
Gas pressure switch has not responded
Burner not operational due to a fault
Fan operation after burner shutdown
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