HVACopediaLennox · Furnace
E200 Flame rollout - hard lockout
What the control is telling you
The rollout switch circuit is open or was previously open; furnace is in hard lockout.
Applies to: EL296UHV(X) series furnaces (integrated control 103130-XX and 107045-XX)
Likely causes
- Blocked heat exchanger
- Blocked flue/vent
- Lack of combustion air
- Failed rollout switch
Test and repair steps
- Warning: A rollout trip means flame came out of the burner box; find the cause before resetting.
- Inspect the heat exchanger, vent and combustion air piping for blockage.
- Check burner alignment and burner box cover in place.
- Check burner faces and crossovers for blockage and clean (soft brush vacuum) if needed.
- After reset, a hard lockout requires a thermostat reset or power cycle.
- Rollout switches (S47) are on top of the burner box, one each side; they open at 210°F.
- Once the cause is fixed, press the manual reset on the switch, or replace it if it will not reset.
- Test furnace operation through a full heat cycle.
Settings for these units
Recommended filter size by cabinet width · EL296UHV
| Cabinet width | Side return | Bottom return |
|---|---|---|
| 17-1/2 in. | 16 x 25 x 1 in. (1) | 16 x 25 x 1 in. (1) |
| 21 in. | 16 x 25 x 1 in. (1) | 20 x 25 x 1 in. (1) |
| 24-1/2 in. | 16 x 25 x 1 in. (2) | 24 x 25 x 1 in. (1) |
Number in brackets is the quantity of filters.
Filters are field supplied and installed outside the furnace; inspect monthly.
Recommended filter size by cabinet width · Lennox SL280UHV
| Cabinet width | Side return | Bottom return |
|---|---|---|
| 14-1/2 in. | 16 x 25 x 1 in. (1) | 14 x 25 x 1 in. (1) |
| 17-1/2 in. | 16 x 25 x 1 in. (1) | 16 x 25 x 1 in. (1) |
| 21 in. | 16 x 25 x 1 in. (1) | 20 x 25 x 1 in. (1) |
| 24-1/2 in. | 16 x 25 x 1 in. (2) | 24 x 25 x 1 in. (1) |
Number in brackets is filter quantity; filters are field supplied.
Never run the unit without a filter installed.
- Filter sizes by cabinet width · Lennox ML180UHE
- Filter sizes by cabinet width · Lennox SL297NV
Models that show this code
34 models in EL296UHV, Lennox SL280UHV, Lennox ML180UHE, Lennox SL297NV
Other codes on the same units
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Source: Lennox EL296UHV(X) Unit Information / Service Literature, Table 5 Ignition Control 103130-XX Diagnostic Codes, p.34; Ignition Control 107045-XX Diagnostic Codes table, p.41, Troubleshooting: Heating Sequence of Operation flowchart, p.110-112, Maintenance p.89. Summarized in our own words; check the original manual for your model.
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