Lennox ELITE Series Installation Instructions Manual page 38

INTEGRATED CONTROL
(Automatic Hot Surface Ignition System)
RED LED
RECALL BUTTON
Figure 54
RED LED
Flash Code 2
Off
Heartbeat1
Continuous Rapid Flash
1
2
3
4
5
6
7
8
9
10
11
12
13
Note - 1
Note - 2
Note - 3
BLOWER OFF DELAY
TABLE 13
IGNITION CONTROL
No power to control or board fault detected
Normal Operation - Idle, Continuous Fan, Cool
Call For Heat / Burner Operation
Reverse Line Voltage Polarity
Improper Earth Ground
Burner failed to light, or lost flame during heat demand
Low Flame Signal - check flame sensor
Watchguard - burner failed to light, exceeded maximum number of retries or
recycles.
Not Used
Primary or Secondary Limit Open or Watchguard Mode - Limit Switch Open longer
than 3 minutes
Rollout Switch Open
Pressure Switch failed to close or opened during heat demand
Watchguard - Pressure Switch opened 5 times during one heat demand
Pressure Switch stuck closed prior to activation of combustion air inducer
Flame Sensed without gas valve energized
Low Line Voltage
Notes
A "Heartbeat" is indicated by a "Slow Flash" - 1 sec on 1 sec off, repeating
Error codes are indicated by a "rapid flash" - the LED flashes X times at ½ second on ½ second off,
remains off for 3 seconds then repeats.
Last 10 error codes are stored in memory including when power is shut off to the
unit. - To recall, pressand release button, most recent will be displayed first, LED off for 3 sec,
then next error code is displayed, etc. To clear error codes, depress and hold button longer than 5
seconds.
Page 38
1/4" QUICK CONNECT TERMINALS
120HUM
LINE
XFMR
CIRC
EAC
NEUTRAL
HUM24
3/16" QUICK CONNECT TERMINALS
COOL
HEAT
FAN
PARK (no power)
FLAME / FS
24 COM
Diagnostic Codes / Status of Furnace
TABLE 12
Humidifier 120VAC
120VAC
Transformer 120VAC
Indoor blower 120VAC
Indoor air qualityaccessory 120VAC
Common 120VAC
Humidifier 24VAC
Cooling tap 24VAC
Heating tap 24VAC
Continuous blower 24 VAC
Park terminal for speed taps
Flame Sense
Common 24VAC