Page 22
Integrated Control
RED LED
Flash Code
Diagnostic Codes / Status of Furnace
Off
No power to control or board fault detected
On
Board fault detected,
Heartbeat
1
Control powered - displayed during all modes of operation if no errors are detected
1
Reverse Line Voltage Polarity
2
Improper Earth Ground
3
Burner failed to light, or lost flame during heat demand
4
Low Flame Signal - check flame sensor
5
Watchguard - burner failed to light, exceeded maximum number of retries or recycles.
6
Ignitor Circuit Failure - not available on this control
7
Primary or Secondary Limit Open or Watchguard Mode - Limit Switch Open longer than 3 minutes
8
Rollout Switch Open
9
Pressure Switch failed to close or opened during heat demand
10
Watchguard - Pressure Switch opened 5 times during one heat demand
11
Pressure Switch stuck closed prior to activation of combustion air inducer
12
Flame Sensed without gas valve energized
13
Low Line Voltage
Notes
Note 1
A ”Heartbeat” is indicated by a ”Slow Flash” - 1 sec on 1 sec off, repeating
Note
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
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 21
INTEGRATED CONTROL
(Automatic Hot Surface Ignition System)
BLOWER OFF DELAY
RED LED
RECALL BUTTON
TABLE 9
1/4” QUICK CONNECT TERMINALS
120HUM
Humidifier 120VAC
LINE
120VAC
XFMR
Transformer 120VAC
CIRC
Indoor blower 120VAC
EAC
Indoor air quality accessorie 120VAC
NEUTRALS
Common 120VAC
HUM24
Humidifier 24VAC
3/16” QUICK CONNECT TERMINALS
COOL
Cooling tap 24VAC
HEAT
Heating tap 24VAC
FAN
Continuous blower 24 VAC
PARK (no power)
Park terminal for speed taps
FLAME/FS
Flame sense
24 COM
Common 24VAC
