273.3 Normal Run / Standby / Start-up – No User Intervention RequiredOnce the unit has initialised User LED 1 refers to cylinder 1, while User LED 2 refersto Cylinder 2. For combinations of LED 1 and LED 2 being off, RED or RED Flashingrefer to following table.User LED 1 User LED 2 Description1 OFF OFFCylinder 1 and Cylinder 2 (if fitted) in shutdown.OrCylinder 1 in standby and Cylinder 2 in shutdown.2 OFF RED Flashing1 second periodCylinder 1 and Cylinder 2 (if fitted) in standby3Green AmberFlashing VariableRED FlashingVariable Period or ONOFFOFFCylinder 1 Startup. Cylinder 2 (if fitted) in standby.Cylinder 1 Online. Cylinder 2 (if fitted) in standbyThe variable period is determined by the demand signal for cylinder1 as follows,Cylinder 1 demand LED ON RED LED OFF<12.5% 0.5 seconds 3.5 seconds<25% 1.0 seconds 3.0 seconds<37.5% 1.5 seconds 2.5 seconds<50% 2.0 seconds 2.0 seconds<62.5% 2.5 seconds 1.5 seconds<75% 3.0 seconds 1.0 seconds<87.5% 3.5 seconds 0.5 seconds>=87.5% ON RED Continually4 Any Green AmberREDCylinder 2 Start-upCylinder 2 OnlineThe above are purely indications of the current state of the unit, and require no actionfrom the operator. When the state changes the indication will automatically change.