To Next PageTo Next PageWhat to do if my Lennox MWMB012S4-*L Air Conditioner shows an indoor return air temperature sensor error?
If your Lennox Air Conditioner indicates an indoor return air temperature sensor error, examine the sensor and its connections.
What to do if my Lennox Air Conditioner has low refrigerant?
If your Lennox Air Conditioner has low refrigerant, add refrigerant according to system specifications.
What to do if my Lennox Air Conditioner has high or low voltage protection error?
If your Lennox Air Conditioner displays a high or low voltage protection error, verify the voltage supply levels and correct if required.
How to fix communication error between indoor and outdoor unit in Lennox Air Conditioner?
To address a communication error between the indoor and outdoor units of your Lennox Air Conditioner, check the communication wiring and connections.
What to do if my Lennox MWMB012S4-*L Air Conditioner has a high water level alarm?
If your Lennox Air Conditioner is showing a high water level alarm, clear any blockage from the drain system.
How to reset outdoor current overload on Lennox MWMB012S4-*L Air Conditioner?
If your Lennox Air Conditioner senses an outdoor current overload, reset the overload protection if it has tripped.
What to do if my Lennox MWMB012S4-*L Air Conditioner has an outdoor coil temperature sensor error?
If your Lennox Air Conditioner shows an outdoor coil temperature sensor error, inspect and verify the sensor's condition.
How to fix indoor coil temperature sensor error in Lennox MWMB012S4-*L Air Conditioner?
To address an indoor coil temperature sensor error in your Lennox Air Conditioner, check temperature sensor functionality.
How to troubleshoot IPM error on Lennox Air Conditioner inverter module?
To troubleshoot an IPM error on your Lennox Air Conditioner's inverter module, examine the inverter module and replace it if necessary.
What to do for compressor pressure switch issues in Lennox Air Conditioner?
If your Lennox Air Conditioner has a compressor high-pressure or low-pressure switch open, investigate system pressures and correct abnormalities.
General| Refrigerant | R-410A |
|---|---|
| Phase | 1 |
| Frequency | 60 Hz |
| Cooling Capacity | 12000 BTU/h |
| Stages | Single |
| Sound Pressure Level (Outdoor Unit) | 72 dB |
Details on performance, operating range, and physical characteristics of outdoor units.
Performance data, operating range, and connections for MCFA/MCFB units.
Diagrams illustrating refrigerant flow for single and multi-zone systems.
Wiring diagrams for various MPA, MPB, and MLA single-zone outdoor units.
Wiring diagrams for M22A, M33A/B, MMDA, MCFA/MCFB indoor units.
Steps for adding refrigerant and performing initial checks.
Troubleshooting guide for outdoor unit error codes (E0, E2, E3, etc.).
Troubleshooting guide for indoor unit error codes (CP, E0, E1, etc.).
Summarized error codes for single and multi-zone units.
