C Display

Boiler operating in normal running mode.

Boiler will continue to run unless interrupted external controls or boiler has reached temperature.

Boiler operating in normal running mode.

C display with a flashing burner neon indicates boiler is has reached its set temperature and will come back on when temperature falls.

Boiler operating in normal running mode.

This indicates the boiler is in a pump overrun mode which occurs at the end of CH operation. This will last 5 minutes unless interrupted by demand for hot water.

Communication fault with front user display, attempt reset

If fault remains - Call out engineer

Communication fault with front user display, attempt reset

If fault remains - Call out engineer

Only occurs on boilers produced after 2007 after L9 is reset. Indicates boiler is cooling down. Has to be below 50C before boiler will fire. Boiler can take approx 30mins to cool down please ensure all TRV'S are open during this period

Blank Display see further information

Boiler in standby mode no demand for DHW or CH