Baxi ECOGEN 24/1.0, Installation & Servicing Instructions Manual

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17.0 Fault Finding
17.1 Operating Sequence
1. With a demand for heating or hot water, the pump circulates water through the primary circuit. If the flow is at least 8 l/min. the ignition sequence will start.
2. The engine burner will light first. Once the engine burner has established at the ignition rate (a flame symbol will be displayed along with a '1 'on the THINK Controller
it
will ramp up to the max rate of around 7.5 kW input, after about 1 minute the engine will be connected to the grid and the appliance will start generating electricity. The
power generated may be viewed on the THINK Controller.
3. The control will only allow the supplementary burner to light if certain conditions in the engine are satisfied or if the rate of increase in the flow temperature is not sufficient
to satisfy demand within a certain time.
4. Once these criteria are met the supplementary burner will be lit at the ignition rate ('2' will appear next to the ) drop to minimum and then modulate to the rate required
according to the boiler setpoint temperature. As the boiler flow temperature approaches the setpoint the supplementary burner will modulate down and switch off before the
engine burner.
5. Each burner has five attempts at lighting which take about 25 seconds each. At the end of the fifth attempt if no flame is detected an error message will be displayed.
6. If the engine burner fails to light, the control will switch to lighting the supplementary burner.
7. When the demand is satisfied the burner is extinguished and the pump continues to run for a period of 5 minutes (Pump Overrun).
8. If for any reason a fault occurs which prevents the appliance from running correctly an error code will be displayed.