| 1 | 801935 / E91-959 | Central heating thermistor | | |
| 2 | 801920 / E92-062 | Fan | | |
| 3 | 801921 / E91-953 | Air pressure switch | | |
| 4 | 801915 / E91-904 | Printed circuit board - Main | | |
| 5 | 801896 | Pump head | | |
| 6 | 801911 / E83-997 | System water pressure sensor | | |
| 7 | 801891 / E91-945 | Gas control valve (G20) | | |
| 8 | 801978 / E92-058 | Gas control valve (G30) | | |
| 9 | 801904 / E94-000 | Discharge safety valve | | |
| 10 | 801913 / E91-949 | Overheat thermostat | | |
| 11 | 801888 / E91-917 | Ignition electrode | | |
| 12 | 801887 / E91-922 | Flame sense electrode | | |
| 13 | 801923 / E84-018 | 230V controls board | | |
| 14 | 801922 / E91-954 | User interface PCB | | |
| 15 | 801892 / E91-924 | Stepper motor (G20) | | |
| 16 | 801979 / E92-059 | Stepper motor (G30) | | |
| 17 | 801936 / E91-960 | Ignition unit | | |
| 18 | 801903 / E88-838 | Three way valve actuator | | |
| 19 | 801881 / E91-939 | Heat exchanger | | |
| 20 | 801890 / E91-944 | Burner / 14 Blades | | |
