Lennox Ducted Heating

Lennox Error Code Heartbeat

Ducted Heating

Heartbeat 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

  • Normal Operation - Idle, Continuous Fan, Cool
  • G60UHV(X), G61MPV: Normal operation - signaled when heating demand initiated at thermostat.
  • EL195UH: Control powered - displayed during all modes of operation if no errors are detected

Causes & actions from Lennox

Normal Operation - Idle, Continuous Fan, Cool

6 models

EL195UHNE, EL196UHE, ML180UHE, ML180UHV, ML193UHE, ML196UHE

How it shows
  • Integrated control red LED: Heartbeat

Normal Operation - Idle, Continuous Fan, Cool (A "Heartbeat" is indicated by a "Slow Flash" - 1 sec on 1 sec off, repeating)

Other manual wording (1 of 2)

ML193UHE

Normal Operation - Idle, Continuous Fan, Cool (indicated by a 'Slow Flash' - 1 sec on 1 sec off, repeating)

Other manual wording (2 of 2)

EL196UHE, ML180UHE

This manual entry does not list further causes or actions.

Applicable models & manual sources

Normal operation - signaled when heating demand initiated at thermostat.

Models: G60UHV(X), G61MPV

How it shows
  • ignition control red led: Heartbeat
  • ignition control red led: Heartbeat

This manual entry does not list further causes or actions.

Applicable models & manual sources

Control powered - displayed during all modes of operation if no errors are detected

Models: EL195UH

How it shows
  • Integrated control red LED: Heartbeat

Control powered − displayed during all modes of operation if no errors are detected. A "Heartbeat" is indicated by a "Slow Flash" − 1 sec on 1 sec off, repeating.

Applicable models & manual sources
  • EL195UH

    Control powered − displayed during all modes of operation if no errors are detected

    EL195UH manual, page 49

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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