
Error Codes
Below is a chart describing the Error Codes that might be displayed if an error occurs with your furnace.
Error | Error | Possible | |
Code | Descrption | Causes | |
Err1 | The high limit temperature sensor | • | Inadequate ventilation. |
| has tripped. | • | Room fan failure. |
|
| • | Exhaust Blockage. |
|
| • Electrical Open in the over temperature switch or wiring. | |
Err2 | Furnace ran out of fuel during normal | • | Hopper Empty. |
| operation. | • Auger output failure or jam. | |
|
| • Flame of fuel quality caused fire to burn too slowly or go out. | |
|
| • Electircal Open in low temperature switch or wiring. | |
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| |
Err3 | The furnace was unable to reach the | • Flame or Fuel quality caused the fire to burn too slowly or go | |
| Room Fan On temperature within the | out. | |
| startup time. | • | Auger output failure or jam Hopper empty on startup. |
Err4 | The power failed while the furnace was | • Electrical Open in low temperature switch or wiring. | |
| hot, and when power was restored, the | • | Power loss |
| fire was out. | • Electrical Open in low temperature switch or wiring. | |
Err5 | The Auger output fuse has blown. | • Auger motor jammed or bad. | |
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| |
Err6 | The Agitator output fuse has blown. | • Agitator motor jammed or bad. | |
Err7 | The Draft Fan (Exhaust Fan) output | • Draft Fan motor jammed or bad. | |
| fuse has blown. |
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|
Err8 | The Room Fan blower output fuse has | • Room fan motor jammed or bad. | |
| blown. |
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Flashing Indicators
Several situations or events are indicated in normal operation by blinking display indicators or segments in the display:
Flashing On Indicator : This means that the furnace is in the “Lighting” state waiting for either a 3 minute timeout to begin burning or for the furnace to reach the warm temperature whichever comes first.
Flashing Off Indicator : This indicates that the furnace is in the “Shutdown” state waiting for the OFF button, or for a 15 minute period after the furnace was turned off, or for the furnace to cool down, or for the door to be closed.
Flashing dash
Flashing Automatic Mode Indicator : This indicates that the furnace is in normal operation and is running in the automatic mode. However, either the Draft Fan or Auxiliary setting is manually configured.
Flashing Draft Fan Setting Indicator : This indicates that the furnace is in normal operation and that the vacuum sensor detects a loss of pressure either because the door is open or because there is a negative pressure in the room with respect to the exhaust.
Flashing Heat Range Setting Indicator : This indicates that the furnace is in normal operation and that an overtemperature condition exists causing the fuel to stop.
Flashing Auger Delay Indicator : This indicates that the furnace is in normal operation and that the hopper lid is open.
USSC | 21 |