| Red LED blinks | Meaning |
| 1 | Flame failure / Lockout due to excessive ignition retries |
| 2 | Draft inducer not operating or pressure switch failure (closed pressure switch circuit) |
| 3 | Open pressure switch |
| 4 | Pressure error / High limit error |
| Amber LED blinks | Meaning |
| 1 | No call for heat |
| 2 | Call for heat |
| 3 | Limit switch open |
| 4 | Rollout switch open |
| 5 | Vent and/or combustion air system restricted |
| 6 | Flame sensing rod needs cleaning |
Now you know what the issue is, Let’s Go Find Some Easy-Fix Solutions
