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Red LED Flash Code
2
Off
Heartbeat
1
Continuous Rapid Flash Call for heat / burner operation
1 Flash
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
9 Flashes
10 Flashes
11 Flashes
12 Flashes
13 Flashes
A "heartbeat" is indicated by a "slow flash" - 1 sec on 1 sec off, repeating
1
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
2
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 sec.
Red LED Flash Code
2
Off
On
Fast Heartbeat
3
Slow Heartbeat
1
1 Flash
2
2 Flashes
2
3 Flashes
2
4 Flashes
2
5 Flashes
2
6 Flashes
2
7 Flashes
2
8 Flashes
2
9 Flashes
2
10 Flashes
2
11 Flashes
2
12 Flashes
2
13 Flashes
2
A slow heartbeat is indicated by 1 sec on / 1 sec off. It is used for idle, continuous fan and cool modes.
1
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 2 sec, then repeats.
2
A fast heartbeat is indicated by 1/2 sec on / 1/2 sec off. It is only used during a heat call.
3
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 sec.
507768-05G / 31-5000655
No power to control or control hardware fault detected
Normal operation - idle, continuous fan, cool
Reverse line voltage polarity
Improper earth ground
Burner failed to light, or lost flame during heat demand
Low flame signal - check flame sensor
Soft lockout - burner failed to light, exceeded maximum number of retries or recycles
Not used
Primary or Secondary limit open or soft lockout mode - limit switch open longer than 3 minutes
Rollout switch open
Pressure switch failed to close or opened during heat demand
Soft lockout - 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
Table 10. Diagnostic Codes for 103217-03 Control
No power to control or control hardware fault detected
Board Fault Detected
Call for Heat / Burner Operation
Normal Operation – Idle, Continuous Fan, or Cool
Reverse Line Voltage Polarity or Phasing of 120V power
Improper earth ground
Burner failed to light, or lost flame during heat demand
Low flame signal - check flame sensor
Soft lockout – burner failed to light, exceeded maximum number of retries/recycles, 1 hour lockout
Not used
Primary or Secondary limit switch open or soft lockout mode – Limit Switch open longer than 3 minutes
Rollout switch open
Pressure switch failed to close or opened during heat demand
Soft lockout - 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
Table 11. Diagnostic Codes for 107163-01 Control
Diagnostic Codes / Status of Furnace
Diagnostic Codes / Status of Furnace
Issue 2223
Page 43 of 56
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