Lennox Split & Multi-Split

Lennox Split & Multi-Split Error Code E

Split & Multi-Split

E 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: To enter Error Code Recall Mode - PUSH and HOLD button until solid E appears, then RELEASE button. Control will display up to ten error codes stored in memory. If E000 is displayed, there are no stored error codes.
  • CBK48MVT: AHC idle? YES: push/hold button until solid E appears, release to enter recall. AHC idle? NO: turn room thermostat OFF, then test idle again.

Causes & actions from Lennox

To enter Error Code Recall Mode - PUSH and HOLD button until solid E appears, then RELEASE button. Control will display up to ten error codes stored in memory. If E000 is displayed, there are no stored error codes.

Models: CBK48MVT, CBX40UHV

Air handler (indoor)

How it shows
  • Single-character display: E

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBK48MVT

    To enter Error Code Recall Mode — PUSH and HOLD button until solid E appears, then RELEASE button. Control will display up to ten error codes stored in memory. If E000 is displayed, there are no stored error codes.

    CBK48MVT manual, page 50

  • CBX40UHV

    To enter Error Code Recall Mode — PUSH and HOLD button until solid E appears, then RELEASE button. Control will display up to ten error codes stored in memory. If E000 is displayed, there are no stored error codes.

    CBX40UHV manual, page 20

AHC idle? YES: push/hold button until solid E appears, release to enter recall. AHC idle? NO: turn room thermostat OFF, then test idle again.

Models: CBK48MVT

How it shows
  • Single-character display: E

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBK48MVT

    AHC idle? YES: push/hold button until solid E appears, release to enter recall. AHC idle? NO: turn room thermostat OFF, then test idle again.

    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.

What should you check next?

Continue in ACLogics with guided diagnosis for your equipment and symptoms.

Download on the App Store Get it on Google Play
Scan to install on your phone Free · iPhone & Android
See how guided diagnosis works →