Table 13-Expanded Annunciator Hold Codes; Table 14-Expanded Annunciator Fault Codes - Honeywell 7800 Series Manual

RM7838B
TROUBLESHOOTING
Annunciation Message
BURNER OFF: T6
(Burner Switch)
STANDBY HOLD: T6
(Aux. Limit #1)
STANDBY HOLD: T6
(Aux. Limit #2)
STANDBY HOLD: T6
(LWCO)
STANDBY HOLD: T6
(High Limit)
STANDBY HOLD: T6
(Aux. Limit #3)
STANDBY HOLD: T6
(FuelSelect Off)
STANDBY HOLD: T6
(BothFuelSelect)
STANDBY HOLD: T6
(High Oil Pres.)
STANDBY HOLD: T6
(Low Oil Pres.)
STANDBY HOLD: T6
(High Oil Temp.)
STANDBY HOLD: T6
(Low Oil Temp.)
STANDBY HOLD: T6
(Atomizing Sw.)
STANDBY HOLD: T6
(High Gas Pres.)
STANDBY HOLD: T6
(Low Gas Pres.)
STANDBY HOLD: T6
(Circuit Fault)
Annunciation Message
LOCKOUT nna
*Aux. Limit #1*
LOCKOUT nnb
*Aux. Limit #2*
LOCKOUT nnc
*LWCO*
LOCKOUT nnd
*High Limit*
LOCKOUT nne
*Aux. Limit #3*
LOCKOUT nnf
*FuelSelect Off*
LOCKOUT nng
*BothFuelSelect*
65-0120—1
TABLE 13—EXPANDED ANNUNCIATOR HOLD CODES.
Symbol
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
TABLE 14—EXPANDED ANNUNCIATOR FAULT CODES.
Symbol
EA
EA
EA
EA
EA
EA
EA
System Holds
Burner switch is open.
Auxiliary limit #1 is open.
Auxiliary limit #2 is open.
Open low water cutoff.
High limit (pressure or temperature) exceeded.
Auxiliary limit #3 is open.
No fuel selected.
Both fuels selected.
Oil pressure is above high oil pressure limit.
Oil pressure is below low oil pressure limit.
Oil temperature is above high oil temperature limit.
Oil temperature is below low oil temperature limit.
Atomizing Switch is open.
Gas pressure is above high gas pressure limit.
Gas pressure is below low gas pressure limit.
Control input is not energized.
System Faults
Auxiliary limit #1 was open.
Auxiliary limit #2 was open.
Open low water cutoff.
High limit (pressure or temperature) was exceeded.
Auxiliary limit #3 was open.
No fuel selected.
Both fuels selected.
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