Lennox Split & Multi-Split

Lennox Error Code ≡

Split & Multi-Split

≡ 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: If three horizontal bars are displayed, AHC does not recognize air handler model size and capacity.
  • CBK48MVT, CBX40UHV: To exit Error Code Recall Mode - PUSH and HOLD button until solid three horizontal bars appear, then RELEASE button. NOTE - Error codes are not cleared
  • CBK48MVT: While in recall push/hold until solid three horizontal bars, release: exits recall; error codes are NOT cleared. Continuing to HOLD goes to separate clear-history branch.

Causes & actions from Lennox

If three horizontal bars are displayed, AHC does not recognize air handler model size and capacity.

Models: CBK48MVT, CBX40UHV

Air handler (indoor)

How it shows
  • Single-character display: ≡

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBK48MVT

    If three horizontal bars are displayed, AHC does not recognize air handler model size and capacity. See Configuring Unit Size Codes in Figure 22.

    CBK48MVT manual, page 49

  • CBX40UHV

    If three horizontal bars are displayed, AHC does not recognize air handler model size and capacity. See Configuring Unit Size Codes in figure 18.

    CBX40UHV manual, page 19

To exit Error Code Recall Mode - PUSH and HOLD button until solid three horizontal bars appear, then RELEASE button. NOTE - Error codes are not cleared

Models: CBK48MVT, CBX40UHV

Air handler (indoor)

How it shows
  • Single-character display: ≡

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBK48MVT

    To exit Error Code Recall Mode — PUSH and HOLD button until solid three horizontal bars appear, then RELEASE button. NOTE - Error codes are not cleared

    CBK48MVT manual, page 50

  • CBX40UHV

    To exit Error Code Recall Mode — PUSH and HOLD button until solid three horizontal bars appear, then RELEASE button. NOTE − Error codes are not cleared

    CBX40UHV manual, page 20

While in recall push/hold until solid three horizontal bars, release: exits recall; error codes are NOT cleared. Continuing to HOLD goes to separate clear-history branch.

Models: CBK48MVT

How it shows
  • Single-character display: ≡

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBK48MVT

    While in recall push/hold until solid three horizontal bars, release: exits recall; error codes are NOT cleared. Continuing to HOLD goes to separate clear-history branch.

    CBK48MVT manual, page 62

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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