To Next PageTo Next PageWhat to do if my Lennox MWMB012S4-*L Air Conditioner shows an outdoor EEPROM malfunction?
If your Lennox Air Conditioner displays an outdoor EEPROM malfunction, try these steps: * Power off the unit, then restart it after 3 minutes. * If the issue persists, the outdoor main PCB may need to be replaced.
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.
How to troubleshoot indoor fan speed error on Lennox Air Conditioner?
To troubleshoot an indoor fan speed error on your Lennox Air Conditioner, inspect the fan and motor for proper operation.
What to do if my Lennox Air Conditioner shows an outdoor unit fan speed error?
If your Lennox Air Conditioner displays an outdoor unit fan speed error, check the fan for operational issues.
How to fix compressor drive error in Lennox MWMB012S4-*L Air Conditioner?
To fix a compressor drive error in your Lennox Air Conditioner, inspect the compressor and associated drive components.
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.
