There was an error while programming the control and the memory is corrupt. The boiler control will not function in this state and the pump will be off as indicated on the bottom line. This error only occurs if a technician is programming the control and the programming function fails. The only way to recover from this error is to reprogram the control. If this error occurs at any time other than when a technician is servicing the boiler, the control has failed and must be replaced by a qualified technician.
The control must be reprogrammed. If programming does not solve the problem, the control must be replaced.