What It Means
- M22A, M33A, M33B: Compressor highor low-pressure switch open - outdoor unit display P2
- Multi-Zone compressor highor low-pressure switch open - outdoor unit display P2
- Outdoor IGBT temperature sensor error
Lennox Split & Multi-Split
Lennox Error Code P7
Split & Multi-Split
P7 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
Compressor highor low-pressure switch open - outdoor unit display P2
Models: M22A, M33A, M33B
Mini-split unit (indoor)
How it shows
- Indoor receiver display: P7
- mini outdoor fault display: P2
This manual entry does not list further causes or actions.
Applicable models & manual sources
- M22A
Compressor high- or low-pressure switch open - outdoor unit display P2
M22A, M33A, M33B
Multi-Zone compressor highor low-pressure switch open - outdoor unit display P2
7 models
M22A, M33A, M33B, MCFA, MCFB, MMDA, MMDB
Mini-split unit (indoor)
How it shows
- corp1816 cassette ducted floor display: P7
- corp1816 running light: 8 times
- corp1816 timer light: Flash
This manual entry does not list further causes or actions.
Applicable models & manual sources
- M22A
Multi-Zone compressor high- or low-pressure switch open - outdoor unit display P2
M22A, M33A, M33B, MMDA, MMDB, MCFA, MCFB
Outdoor IGBT temperature sensor error
5 models
M22A, MCFA, MCFB, MFMA, MMDB
Mini-split unit (indoor)
How it shows
- 507550 indoor display: P7
This manual entry does not list further causes or actions.
Applicable models & manual sources
- M22A
Outdoor IGBT temperature sensor error
M22A, MMDB, MCFA, MCFB, MFMA
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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