Operating Mode/Boiler Burner Status - Wolf CGB-2 Series Installation Instructions For Contractors

Wall mounted gas condensing boiler/gas condensing combi boiler
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Boiler operating mode
Display shows
Start
Standby
Combi mode
Heating mode
DHW mode
Emissions test
Frost HC
Frost DHW
Frost protection
Min. combi time
Htg run-on
DHW run-on
Parallel mode
Test
Cascade
BMS
100 % cali
External disable
Boiler burner status
Display shows
OFF
Pre-flush
Ignition
Stabilisation
Soft start
ON
Cycle block
Unattended op.
Fl. gas damper
Spread too wide
Spread KF
Valve test
Ramp control
Fault
Post-flush
3064810_201804
21. Operating mode/Boiler burner
status
Meaning
Appliance starting
No heating or DHW demand
DHW heating with heat exchanger active, water tap is open
Heating mode, at least one heating circuit demands heat
DHW heating with cylinder, cylinder temperature is below set value
Emissions test mode active, boiler running at maximum output
Boiler frost protection function, boiler water temperature below frost protection limit
Frost protection function of DHW cylinder enabled;, cylinder temperature below
frost protection limit
System frost protection enabled; outside temperature below frost protection limit
Appliance remains in DHW mode (heat exchanger) for a minimum amount of time
Heating circuit pump run-on enabled
Cylinder primary pump run-on enabled
Heating circuit pump and cylinder primary pump enabled in parallel
Relay test function has been enabled
Cascade module in system enabled
Appliance is controlled by building management system (BMS)
Appliance is calibrating the flue gas system
External disabling of the heating appliance (input E1 closed; OWHA)
Meaning
No burner demand
Fan operation before burner start
Gas valves and ignition unit are enabled
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
Awaiting 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 temperature sensor too
wide
Gas valve test
Boiler water temperature rising too quickly
Burner not operational due to a fault
Fan operation after burner shutdown
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