Use a soft brush or vacuum to remove dust from the evaporator coils. Do not bend the aluminum fins.
Essential warnings regarding system pressures, electrical shock hazards, and the handling of flammable refrigerants. Dimensions & Specifications: midea air condition mca 48hrn2 service manual
| LED Flash Pattern | Error Description | Primary Fix | | :--- | :--- | :--- | | | Normal Standby | No action. | | 2 Flashes | High Pressure Switch (HPS) open | Clean condenser coil. Check for overcharge. | | 3 Flashes | Low Pressure Switch (LPS) open | Check for low refrigerant, blocked filter. | | 4 Flashes | Compressor Overload | Check for failing run capacitor, high head pressure. | | 5 Flashes | Communication Error (indoor to outdoor) | Check wiring between thermostat and condenser. | | 6 Flashes | Discharge Temp Sensor failure | Replace sensor (10k ohm NTC thermistor). | | Continuous Flash | Control board failure | Replace main PCB. | Use a soft brush or vacuum to remove