Lennox · Furnace

U Discharge air temperature

Normal status EL296UHV

What the display is showing

Shows the discharge (supply) air temperature when a discharge air sensor is installed. On control 107045 a solid U in the button menu means the sensor was detected.

Applies to: EL296UHV(X) with control 103130-XX or 107045-XX

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.

Models that show this code

8 models in EL296UHV

EL296UH045XV36BEL296UH070XV36BEL296UH090XV36CEL296UH090XV48CEL296UH090XV60CEL296UH110XV48CEL296UH110XV60CEL296UH135XV60D

Other codes on the same units

E Error recall mode (button menu)
F Flame signal mode (button menu)
P Program unit size (button menu)
c Clear stored errors (inside error recall)
d Dehumidification mode
dF Defrost mode
h Heat pump stage (dual fuel)
≡ Three bars - back to normal

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Source: Lennox EL296UHV(X) Unit Information, Corp 1125-L5 (rev. 03/2022), Tables 4-5 (diagnostic modes and LED codes), printed p.32-33. Summarized in our own words; check the original manual for your model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.