F10 - Loss of Flame Signal

[HTP]

Fault Code F10 - Loss of Flame Signal

The flame was lost while the boiler was firing 4 times during 1 demand call. The red light will display. This code indicates a serious safety issue. The boiler will not restart until the cause of flame loss is determined by a technician and he pushes the RESET button on the display. During this lockout fault, the pump will be on.