| Slow flashing LED light |
This means that your furnace is on, but it’s not calling for heat. |
This is only an issue if you have raised your thermostat and your furnace doesn’t respond. |
| Rapidly flashing LED light |
Means that your furnace is on and is actively calling for heat. |
Only beware this if your furnace is continuously calling for heat and isn’t responding to your thermostat. |
| Continuous LED on |
Control panel issue. |
Replace the control panel. |
| Two LED flashes |
System lockout due to lack of flame or reversed polarity. |
Check for miswiring, clogged pilot tube, or humidity in the unit. |
| Three LED flashes |
Draft pressure error. |
Check if the drain tubes are full of moisture or obstructed with dirt. |
| Four LED flashes |
The furnace is experiencing an open temperature limit circuit issue. |
The issue with thermal protection. |
| Five LED flashes |
A flame was sensed within your furnace that shouldn’t be present. |
Check for a leaky gas valve, stuck gas valve, or defective flame sensor. |
| Six LED flashes |
AC power voltage is too low. |
Correct line voltage polarity, check the wiring. |
| Seven LED flashes |
An issue with your gas circuit. |
Check your unit’s gas valves for the issue. |
| Eight LED flashes |
Low Flame. |
Check for flame sensor malfunction or low gas pressure. |
| Nine LED flashes |
Igniter circuit issue. |
Check igniter. |
