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C. PHASE 6 OPL MICROPROCESSOR CONTROLLER RELAY
OUTPUT L.E.D. INDICATORS
There are a series of five (5) L.E.D. (light emitting diode) indicators (ORANGE LIGHTS) located at the backside
are of the Phase 6 OPL microprocessor controller (computer). These are identified or labeled (from top to
bottom in the illustration below as: FAN-BLOWER, FOR-FORWARD, REV-REVERSE, AIR-AIR-JET, HT1-
HEAT OUTPUT. There are a series of seven (7) L.E.D. indicators (red lights) FUSE-MAIN FUSE, LINT-
LINT DOOR, MAIN-MAIN DOOR, DRUM-TUMBLER HI-LIMIT, SAIL-SAIL SWITCH, BURN-BURNER
HI LIMIT, FLAME-FLAME PROBE). The L.E.D. in the center of the board (red light) indicates power
supplied to the Phase 6 OPL microprocessor controller (computer). These L.E.D.’s indicate the inputs and
outputs of the Phase 6 OPL microprocessor (computer) as it monitors the safety circuits.