Select appropriate error code:
| CODE / | FAULT DESCRIPTION |
| 01 | IGNITION FAILURE |
| 02 | OVERHEAT |
| 03 | FAN / FLUE / AIR PRESSURE |
| 04 | PRIMARY WATER PRESSURE |
| 06 | HOT WATER THERMISTOR |
| 07 | CENTRAL HEATING THERMISTOR |
| 08 | BURNER OVERHEAT - N/A TO THIS BOILER |
| CO | CO FUNCTION ENABLED |
