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FIG.19
/ STATUS LIGHTS
@ MAIN POWER
r_ CALL FOR HEAT
C[RCUL_TORPUMP
@ GAS VALVE
BURNER
SYSTEM STATUS
LIGHT STATUS INDICATES
ON L7148F CONTROL ENERGIZED THROUGH 24 VOLT TRANSFORMER.
POWER
OFF L7148F CONTROL NOT ENERGIZED.
CALL FOR HEAT/ ON L7148F CONTROL ENERGIZING CIRCULATOR PUMP CIRCUIT.
CIRCULATOR PUMP OFF CIRCULATOR PUMP IS NOT ENERGIZED.
ON L7148F CONTROL ENERGIZING GAS CONTROL VALVE (GAS VALVE OPEN)
GAS VALVE / BURNER
OFF GAS VALVE NOT ENERGIZED (GAS VALVE CLOSED)
L7148F CONTROL LED ERROR CODES
LIGHT STATUS INDICATES
ON L7148F CONTROL ENERGIZED FULLY FUNCTIONAL.
OFF L714BE CONTROL NOT ENERGIZED.
L7148F LED STATUS (2) BLINKS SENSOR ERROR (SHORTED OR OPEN SENSOR).
LIGHT
(3) BLINKS ANOLOG TO DIGITAL ERRORS (SET-POINT POT FAILURE).
(4) BLINKS RELAY FAILURE (CONTROL FAILURE)
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