Atag iC Economiser 27 - Combi Boiler Central Heating Mode Ch

Combi boiler central heating mode (CH)
C.H. Demand
Pump On Error Code 118
Pump Check by
Water Pressure - OK
Diverter Valve
CH Position
Gas Valve Start
Sequence
Fan On
RPM Check - OK
No Ignition
5 Attempts –
Ignition
Achieved
Boiler Operating
Error Code 151
Gas Valve Opens
Spark
Ignition
Flame ON
Flame
Stabilization
5 Seconds
Stabilization
No Flame
Detection
Boiler Will Go
To Low Load
Error Code 133 Reset
5 Attempts –
Ignition Achieved
NO
NO
NO
YES
YES
YES
YES
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