If your Mitsubishi mini-split system is displaying an error code or isn’t functioning properly, resetting the system can often help clear minor issues. Here’s a step-by-step guide to safely resetting your unit.
Step 1: Turn Off the System
- Use your remote control or wall-mounted thermostat to turn off the unit.
- If the unit is unresponsive, locate the power button on the indoor unit and press it to turn off the system.
Step 2: Disconnect Power
- Turn off the circuit breaker that powers your mini-split system.
- If your system is plugged into an outlet, unplug it instead.
- Wait at least 10 minutes to allow the system to fully reset.
Step 3: Check for Common Issues
Before turning the system back on, check for:
✅ Dirty Air Filters – Clean or replace if necessary.
✅ Blocked Airflow – Ensure vents, coils, and the outdoor unit are free of obstructions.
✅ Drain Line Issues – Make sure the condensate drain is clear and not clogged.
✅ Loose Wiring – If comfortable doing so, inspect visible wires for damage or disconnections.
Step 4: Restore Power
- Flip the circuit breaker back on or plug the unit back in.
- Wait a few minutes before turning the system back on using the remote or thermostat.
Step 5: Test the System
- Set the thermostat to your desired temperature and mode (heat/cool).
- Observe if the system operates normally without displaying an error code.
When to Call a Professional
If the reset doesn’t work, or if you see repeated error codes, unusual noises, weak airflow, or refrigerant leaks, it’s best to contact an HVAC professional like McCorry Comfort for a full inspection.
Resetting your Mitsubishi mini-split can resolve minor issues, but regular maintenance helps prevent breakdowns and keeps your system running efficiently. If you're in the Philadelphia area, McCorry Comfort can help ensure your mini-split is in top shape.