699 Appendix9 Appendix9.1 Mode Abbreviations UsedDisplay is set to actual value / statusShort text DescriptionBE → "Ready" (signal on terminal 58)ZÜ → "Ignition position" or ignitionEZ → "Setting/Ignition position” (as "Ignition", but ETAMATIC on "Set")GL → "Base load"EG → "Setting/Base load” (as "Base Load", but ETAMATIC on "Set")NA → "Post-ventilation"AU → "Burner Off" (no signal present)EL → "Setting"SL → "Clear memory"EV → "Setting/Pre-ventilation" (as "Pre- ventilation", but ETAMATIC on "Set")ES → "Setting/Control"(as "Automatic", but ETAMATIC on "Set")ST → "Fault"VO → "Pre-ventilation"HAor Hand→ "Manual mode" (burner output may be adjusted manually)no display → Burner set to automatic in operationLE → external firing-rate (firing-rate controller is disabled by digital input)