Potterton Gas condensing boiler Installation, Operation And Maintenance Manual page 126

Maintenance
In case of fault switch-off, the reset button on the control panel should be pressed.
In case of operation disturbances (bell symbol in thew display), the digit in the dis-
play on theoperating panel points out the cause of the disturbance (see fault code
table).
Burner does not start:
- No voltage at the control and regulating centre
- no "burner ON" signal from the heating circuit control (see fault code table)
Burner goes into disturbance status:
Without flame formation:
- No ignition
- ionisation electrode has ground connection
- no gas
In spite of flame formation the burner goes on fault after expiration of the safety
time:
- Ionisation electrode defective or soiled.
- Ionisation electrode does not penetrate the flame
126 Paramount three 30-115 kW 396532 05.11