Lennox Split & Multi-Split

Lennox Split & Multi-Split Error Code H

Split & Multi-Split

H means different things on different Split & Multi-Split models. Enter your model number to see only your reading, or find your model below.

What It Means

  • CBK48MVT, CBX40UHV: Release push button - control will cycle the indoor blower motor on to the selected heat speed and stage the electric heat relays on and off to automatically detect number of electric heat sections. Control will store the number of electric heat sections. Control will automatically exit current active mode.
  • CBK48MVT: Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Example: or or H1 or H2 or H3
  • CBX40UHV: Stage heating (shows number of active electric heat pilot relays) H1 or H2 or H3

Causes & actions from Lennox

Release push button - control will cycle the indoor blower motor on to the selected heat speed and stage the electric heat relays on and off to automatically detect number of electric heat sections. Control will store the number of electric heat sections. Control will automatically exit current active mode.

Models: CBK48MVT, CBX40UHV

Air handler (indoor)

How it shows
  • Single-character display: H

CONFIGURING ELECTRIC HEAT SECTIONS: Release push button - control will cycle the indoor blower motor on to the selected heat speed and stage the electric heat relays on and off to automatically detect number of electric heat sections. Control will store the number of electric heat sections. Control will automatically exit current active mode.

Other manual wording

CBK48MVT

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBX40UHV

    Release push button − control will cycle the indoor blower motor on to the selected heat speed and stage the electric heat relays on and off to automatically detect number of electric heat sections. Control will store the number of electric heat sections. Control will automatically exit current active mode.

    CBX40UHV manual, page 20

  • CBK48MVT

    Release push button - control will cycle the indoor blower motor on to the selected heat speed and stage the electric heat relays on and off to automatically detect number of electric heat sections. Control will store the number of electric heat sections. Control will automatically exit current active mode.

    CBK48MVT manual, page 50

Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Example: or or H1 or H2 or H3

Models: CBK48MVT

How it shows
  • Single-character display: H

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBK48MVT

    Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat codes. Example: or or H1 or H2 or H3

    CBK48MVT manual, page 49

Stage heating (shows number of active electric heat pilot relays) H1 or H2 or H3

Models: CBX40UHV

Air handler (indoor)

How it shows
  • Single-character display: H

This manual entry does not list further causes or actions.

Applicable models & manual sources
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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