Mitsubishi Heavy Industries · Air Conditioners
The remote control displays E28 (while the indoor unit's green LED keeps flashing and red LED stays off). This indicates a problem with the remote control's temperature sensor.
Click steps to track your progress.
Check the remote control for any visible damage or signs of wear on its wiring.
Ensure the remote control is not exposed to direct sunlight or other heat sources that could affect its temperature readings.
If possible, power cycle the air conditioner by turning it off at the main breaker and then back on.
If the issue persists, contact a service technician to repair the sensor wire.