Lennox Ducted Heating

Lennox Ducted Heating Error Code H

Ducted Heating

H means different things on different Ducted Heating models. Enter your model number to see only your reading, or find your model below.

What It Means

  • Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.
  • Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.
  • SLP98UHV, SLP99UHV: Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes.

Causes & actions from Lennox

Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

9 models

EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02, EL196UHEK, EL280UHE(X), EL296UHE, ML180UHVK, ML193DFEK, ML196UHEK

Gas furnace (indoor)

How it shows
  • Integrated control 7-segment display: H

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • EL195UHNEK

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02

    EL195UHNEK manual, page 13

  • EL196UHEK

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    EL196UHEK manual, page 44

  • EL280UHE(X)

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    EL280UHE(X) manual, page 13

  • EL296UHE

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    EL296UHE manual, page 12

  • ML180UHVK

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    ML180UHVK manual, page 16

  • ML193DFEK

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    ML193DFEK manual, page 39

  • ML196UHEK

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    ML196UHEK manual, page 13

  • ML196UHEK

    Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes. Blinking during ignition.

    ML196UHEK manual, page 44

Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

14 models

EL280UHEK, EL280UHEK(X), EL297UHEK, ML296UHVK, ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK, SL280DFNV, SL280UHV, SL297UHNV

Gas furnace (indoor)

How it shows
  • Integrated control 7-segment display: H

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • EL280UHEK

    Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

    EL280UHEK, EL280UHEK(X)

    EL280UHEK manual, page 10

  • EL297UHEK

    Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

    EL297UHEK manual, page 11

  • ML296UHVK

    Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

    ML296UHVK manual, page 44

  • ML297UH045XV36BK

    Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

    ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK

    ML297UH045XV36BK manual, page 45

  • SL280DFNV

    Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

    SL280DFNV manual, page 45

  • SL280UHV

    Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

    SL280UHV manual, page 52

  • SL297UHNV

    Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Blinking during ignition.

    SL297UHNV manual, page 55

Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes.

Models: SLP98UHV, SLP99UHV

How it shows
  • Integrated control 7-segment display: H

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • SLP98UHV

    Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes.

    SLP98UHV manual, page 62

  • SLP99UHV

    Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes.

    SLP99UHV manual, page 30

Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.

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