To Next PageTo Next PageWhat to do if my Lennox MPB048S4M 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.
General| Brand | Lennox |
|---|---|
| Model | MPB048S4M |
| Category | Air Conditioner |
| Language | English |
Specifies minimum clearance requirements for outdoor units to ensure proper operation and ventilation.
Details the minimum clearance requirements for cassette indoor units from structural ceiling and floor.
Specifies minimum installation clearances for MWMA/MWMB wall-mounted indoor units.
Instructions for adding refrigerant to single-zone systems based on pipe length.
Guidance on adding refrigerant to multi-zone systems based on pipe length and number of ports.
Provides diagnostic steps for common outdoor unit error codes like E0, E2, E3, E4, E5, E6, E8, F1-F6, P1-P6.
Provides diagnostic steps for indoor unit error codes such as CP, E0, E1, E3, E4, E5, EC, EE.
Guide to measuring compressor winding resistance for checks and identification.
Procedure for measuring IPM resistance to check for winding issues.
Steps to measure four-way valve voltage during cooling/heating and resistance.
Describes the protection triggered by outdoor fan speed errors.
Details the protection functions of the inverter module against current, voltage, and temperature.
Explains the behavior of the system during low voltage protection events.
Describes the system's response to compressor current limit protection.
Details the conditions and logic for initiating and managing defrost mode.
