36

Jaguar Model J-390

JAGUAR MODEL J-390 SEQUENCE OF OPERATION

CONTROL LOCKOUT

 

NO

DISPLAY SHOWS

 

 

 

ERROR “A 33”

 

 

 

 

 

THERMOSTAT CALLS FOR HEAT

CIRCULATOR(S) ON

COMBUSTION BLOWER ON

(AT MEDIUM SPEED)

BLOWER SPEED CONFIRMED?

YES

5 SECOND PRE-PURGE PERIOD

TRIAL FOR IGNITION - 6 SECONDS

SPARK IGNITOR ENERGIZED

CONTROL LOCKOUT

DISPLAY SHOWS

ERROR “A 01”

NO

CONTROL LOCKOUT

DISPLAY SHOWS NO ERROR “A 03”

GAS VALVE OPENS

WATER HIGH LIMIT CLOSED?

YES

GAS VALVE REMAINS OPEN

FOR 4 SECONDS

SPARK IGNITOR DE-ENERGIZED

3 TRIALS FOR

YES

IGNITION

 

WITH NO FLAME SENSED?

 

2 TIMES RETRIALS

FOR IGNITION

 

 

 

 

 

 

 

 

NO

GAS VALVE CLOSED.

 

FLAME SIGNAL SENSED?

 

 

 

BLOWER POST PURGE

 

 

10 SECONDS.

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

GAS VALVE REMAINS OPEN. CONTROL

CONTINUOUSLY MONITORS

THERMOSTAT, HIGH LIMIT, WATER

SENSORS, BLOWER SPEED, FLAME

SIGNAL, AND LWCO (IF USED).

THERMOSTAT CALL FOR HEAT ENDS

GAS VALVE CLOSES

10 SECOND BLOWER POST PURGE.

15 SECOND CIRCULATOR POST PURGE.

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Image 36
Slant/Fin installation instructions Jaguar Model J-390 Sequence of Operation