The E5 error code indicates a compressor motor failure. This can result in a system that fails to cool or heat properly.
The motor may have failed or become worn out.
The compressor motor may be drawing too much current, causing it to trip.
Wiring issues may prevent the motor from receiving power.
Turn the unit off for 5–10 minutes, then turn it back on to reset the compressor.
Check the compressor motor for signs of wear or failure.
Ensure the wiring to the motor is secure and undamaged.