Table 15-Expanded Annunciator Diagnostic; Current Status Messages - Honeywell 7800 Series Manual

TABLE 14—EXPANDED ANNUNCIATOR FAULT CODES (Continued)
Annunciation Message
LOCKOUT nnh
*High Oil Pres.*
LOCKOUT nni
*Low Oil Pres.*
LOCKOUT nnj
*High Oil Temp.*
LOCKOUT nnk
*Low Oil Temp.*
LOCKOUT nnm
*Atomizing Sw.*
LOCKOUT nnn
*High Gas Pres.*
LOCKOUT nno
*Low Gas Pres.*
LOCKOUT nnp
*Airflow Switch*
LOCKOUT nnq
*Aux. ILK #4*
LOCKOUT nnr
*Aux. ILK #5*
LOCKOUT nns
*Other ILKs*
LOCKOUT nny
*Valve Closure*
LOCKOUT nnz
*Other PIIs*
EXPANDED ANNUNCIATOR DIAGNOSTIC
CURRENT STATUS MESSAGES (TABLE 15)
These message are used to provide information from the
Expanded Annunciator to the Keyboard Display Module in
Current Status EA Diagnostics, see Table 5. This informa-
tion explains the first limit or interlock that is de-energized in
the system.
Symbol System Faults
EA Oil pressure was above high oil pressure limit.
EA Oil pressure was below low oil pressure limit.
EA Oil temperature was above high oil temperature limit.
EA Oil temperature was below low oil temperature limit.
EA Atomizing switch failed to close.
EA Gas pressure was above high gas pressure limit.
EA Gas pressure was below low gas pressure limit.
EA The Airflow Switch was open when it should have been closed
or vice versa.
EA Auxiliary Interlock #3 was open.
EA Auxiliary Interlock #4 was open.
EA Other Auxiliary Interlocks were open.
EA Preignition Interlock or other valve closure switch was open.
EA Other Preignition Interlocks were open.
53
TABLE 15—EXPANDED ANNUNCIATOR
DIAGNOSTIC CURRENT STATUS MESSAGES.
Display
Burner Sw. Burner Switch
Oper. Control Operating Control
Aux. Limit #1 Auxiliary Limit #1
Aux. Limit #2 Auxiliary Limit #2
LWCO Low Water Cutoff
High Limit High Temperature or
High Pressure Limit
Aux. Limit #3 Auxiliary Limit #3
FuelSelectOff Fuel Select Off
BothFuelSelect Both Fuels Selected
High Oil Pres. High Oil Pressure
Low Oil Pres. Low Oil Pressure
High Oil Temp. High Oil Temperature
Low Oil Temp. Low Oil Temperature
Atomizing Sw. Atomizing Switch
High Gas Pres. High Gas Pressure
Low Gas Pres. Low Gas Pressure
Airflow Sw. Airflow Switch
Aux. ILK #4 Auxiliary Interlock #4
Aux. ILK #5 Auxiliary Interlock #5
All switches on
RM7838B
TROUBLESHOOTING
Description
65-0120—1