2-18 750-166
Annunciation Message Symbol System Faults
LOCKOUT nna
*Aux. Limit #1*
EA Auxiliary limit #1 is open.
LOCKOUT nnb
*Aux. Limit #2*
EA Auxiliary limit #2 is open.
LOCKOUT nnc
*LWCO*
EA Open low water cutoff.
LOCKOUT nnd
*High Limit*
EA High limit (pressure or temperature) is exceeded.
LOCKOUT nne
*Aux. Limit #3*
EA Auxiliary limit #3 is open.
LOCKOUT nnf
*FuelSelect Off*
EA No fuel is selected.
LOCKOUT nng
*BothFuelSelect*
EA Both fuels are selected.
LOCKOUT nnh
*High Oil Pres.*
EA Oil pressure is above high oil pressure limit.
LOCKOUT nni
*Low Oil Pres.*
EA Oil pressure is below low oil pressure limit.
LOCKOUT nnj
*High Oil Temp.*
EA Oil temperature is above high oil temperature limit.
LOCKOUT nnk
*Low Oil Temp.*
EA Oil temperature is below low oil temperature limit.
LOCKOUT nnm
*Atomizing Sw.*
EA Atomizing switch failed to close.
LOCKOUT nnn
*High Gas Pres.*
EA Gas pressure is above high gas pressure limit.
LOCKOUT nno
*Low Gas Pres.*
EA Gas pressure is below low gas pressure limit.
LOCKOUT nnp
*Airflow Switch*
EA The airflow switch is open when it should be closed or vice versa.
LOCKOUT nnq
*Aux. ILK #4*
EA Auxiliary interlock #3 is open.
LOCKOUT nnr
*Aux. ILK #5*
EA Auxiliary interlock #4 is open.
LOCKOUT nns
*Other ILKs*
EA Other Auxiliary Interlocks are open.
LOCKOUT nny
*Valve Closure*
EA Preignition Interlock or other valve closure switch is open.
LOCKOUT nnz
*Other PIIs*
EA Other Preignition Interlocks are open.
TABLE 6—CB783 EXPANDED ANNUNCIATOR FAULT CODES.