What It Means
- Remote switched off.
- MWCB, MWHB: Remote On/Off
- MLA, MPA, MPB: When the LED displays CP, this indicates the J1 jumper removed or loose or the remote on / off switch is activated.
Lennox Split & Multi-Split
Lennox Error Code CP
Split & Multi-Split
CP means different things on different Split & Multi-Split models. Enter your model number to see only your reading, or find your model below.
Causes & actions from Lennox
Remote switched off.
8 models
3WMC, M22A, M33C, MCFA, MCFB, MFMA, MMDB, MWMC
Mini-split unit (indoor)
How it shows
- 507550 indoor display: CP
This manual entry does not list further causes or actions.
Applicable models & manual sources
- M22A
Remote switched off.
M22A, MMDB, MCFA, MCFB, MFMA
- M33C
Remote switched off.
M33C, MWMC, 3WMC
Remote On/Off
Models: MWCB, MWHB
Mini-split unit (indoor)
How it shows
- 508242 indoor display: CP
This manual entry does not list further causes or actions.
Applicable models & manual sources
- MWCB
Remote On/Off
MWCB, MWHB
When the LED displays CP, this indicates the J1 jumper removed or loose or the remote on / off switch is activated.
Models: MLA, MPA, MPB
Mini-split unit (outdoor)
How it shows
- corp1816 multizone outdoor display: CP
This manual entry does not list further causes or actions.
Applicable models & manual sources
- MPA
When the LED displays CP, this indicates the J1 jumper removed or loose or the remote on / off switch is activated.
MPA, MPB, MLA
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?
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