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TABLE 5
Ignition Control 107163-01
RED LED Flash Code Diagnostic Codes / Status of Furnace
Off No Power to Control or Board Fault Detected
On Board Fault Detected
Fast Heartbeat
3
Call for Heat / Burner Operation
Slow Heartbeat
1
Normal Operation – Idle, Continuous Fan, or Coo
1 Flash
2
Reverse Line Voltage Polarity or Phasing of 120V power
2 Flashes
2
Improper Earth Ground
3 Flashes
2
Burner failed to light, or lost flame during heat demand
4 Flashes
2
Low Flame Signal - check flame sensor
5 Flashes
2
Watchguard - burner failed to light, exceeded maximum number of retries or recycles. 1 hour lockout.
6 Flashes
2
Not Used
7 Flashes
2
Primary or Secondary Limit Open or Watchguard Mode - Limit Switch Open longer than 3 minutes
8 Flashes
2
Rollout Switch Open
9 Flashes
2
Pressure Switch failed to close or opened during heat demand, inducer on.
10 Flashes
2
Watchguard - Pressure Switch opened 5 times during one heat demand
11 Flashes
2
Pressure Switch stuck closed prior to activation of combustion air inducer
12 Flashes
2
Flame Sensed without gas valve energized
13 Flashes
2
Low Line Voltage
Notes
Note 1 A slow heartbeat is indicated by 1s on / 1s off. It is used for idle, continuous fan and cool modes.
Note 2
Error codes are indicated by a ”Rapid Flash” - the LED flashes X times at 1/2 sec on 1/2 sec off, remains
off for 3 sec, then repeats
Note 3 A fast heartbeat is indicated by 0.5s on / 0.5s off. It is only used during a heat call.
Note 4
Last 10 error codes are stored in memory including when power is shut off to the unit. - To recall, press
and 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.
FIGURE 5
IGNITION CONTROL 107163-01
Push Button
Error Recall
Diagnostic LED
Heating Blower Off
Delay Selector Switch
FAN
HEAT
COOL
24VCOM
PARKS
HUM24
Ignition Control 107163-01
The heat fan-on time of 30 seconds is not adjustable. The
cool fan-on time of 2 seconds is not adjustable. The heat
fan-off delay (amount of time that the blower operates after
the heat demand has been satisfied) may be adjusted by
changing the two position dip switch on the integerated
control, to one of four selections. Blower off delay is factory
set at 90 seconds. For other blower off delay settings,
please refer to the following chart:
Blower Delay Select
SW2-1 SW2-2
60 OFF ON
90 OFF OFF
120 ON OFF
180 ON ON
Factory Setting is 90
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