Maintenance and Troubleshooting | 6-13
Series 2000 LEDs
This section describes how to interpret information on the LEDs in the
Series 2000 controller auto calibration card and combustibles card.
Auto Calibration Card LEDs
All auto calibration card LEDs denote that the Series 2000 has sent out a
15-volt signal to the RCU to activate the appropriate solenoid. LEDs are
clearly labeled on the auto calibration card - 1 is on the far right of the
card as you look at it.
LED Process When Lit:
1
In Calibration
System is in calibration. This LED remains on for
the entire calibration cycle, then turns off during
the calibration recovery time.
2
O
2
span
O
2
span gas solenoid is energized and the O
2
span gas should be owing into the sensor.
3
O
2
Zero
O
2
zero gas solenoid is energized and the zero
gas should be owing through the sensor.
4
Combustibles Span
Combustibles span gas solenoid is energized
and the combustibles span gas should be ow-
ing into the sensor.
5 through 12 - Not used
Combustibles Card LEDs
Combustibles alarm relays are labeled on the wiring card and in soft-
ware as Alarms 5 & 6. LED number 1 is on the far right of the card as
you look at it; LED number 2 is to the left of LED 1. All LEDs denote
an Alarm relay is energized (contact closed).
LED Alarm When Lit:
1
Combustibles 1
Combustibles Alarm #1 relay is energized (contact closed).
This corresponds to Alarm 5 in software.
2
Combustibles 2
Combustibles Alarm #2 relay is energized (contact closed).
This corresponds to Alarm 6 in software.
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