Split & Multi-Split
E4 means different things on different Split & Multi-Split models. Enter your model number to see only your reading, or find your model below.
3WMB036, M22A, M33A, M33B, MCFA, MCFB, MMDA, MMDB, MWMA, MWMB
Mini-split unit (indoor)
Indoor return air temperature sensor error (Running Light: 5 times, Timer Light: Off)
M22A, M33A, M33B, MCFA, MCFB, MMDA, MMDB
This manual entry does not list further causes or actions.
Indoor return air temperature sensor error
MWMA, MWMB, 3WMB036
Indoor return air temperature sensor error
M22A, M33A, M33B, MMDA, MMDB, MCFA, MCFB
Indoor return air temperature sensor error
M22A, M33A, M33B
Models: Programmable Wired Controller
Mini-split unit
This manual entry does not list further causes or actions.
Indoor coil outlet temperature sensor error (T2B)
M22A, MCFA, MCFB, MFMA, MMDB
Mini-split unit (indoor)
This manual entry does not list further causes or actions.
Indoor room temperature sensor error (T1)
M22A, MMDB, MCFA, MCFB, MFMA
Models: MLA, MPA, MPB
Mini-split unit (outdoor)
This manual entry does not list further causes or actions.
Outdoor temperature sensor (coil sensor T3,ambient sensor T4, Compressor discharge sensor T5 indoor coil outlet pipe sensor T2B) malfunction
MPA, MPB, MLA
3WMB036, M22A, M33A, M33B, MCFA, MCFB, MMDA, MMDB, MWMA, MWMB
Mini-split unit (indoor)
This manual entry does not list further causes or actions.
Temperature sensor error (outdoor coil, outdoor ambient , compressor discharge and indoor unit coil outlet temperature sensors.
MWMA, MWMB, 3WMB036, M22A, M33A, M33B, MMDA, MMDB, MCFA, MCFB
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