Mitsubishi is renowned for manufacturing top-tier electric air conditioning systems valued for their reliability, durability, affordability, and minimal maintenance requirements.
However, like any other electronic device, these air conditioners may encounter occasional issues, often indicated by error codes or a flashing green light.
Surprisingly, you can fix these problems with your Mitsubishi air conditioner by doing a reset. There are a few ways to do it. You can unplug it momentarily, turn off the circuit breaker, or reset the thermostat settings. You can also hold down the reset button on the AC unit or its remote control.
Reasons to Reset a Mitsubishi Air Conditioner
Here are four key reasons for resetting a Mitsubishi AC,
| When to Reset a Mitsubishi Air Conditioner | Reasons and Circumstances |
|---|---|
| After a power outage | Following a power disruption, the AC’s circuit breaker or isolator switch may trip to protect the unit. A reset is necessary to restore functionality. |
| Clearing specific error codes | Resetting can resolve specific error codes like E9 and E6 associated with transmission issues in the controller board and inside/outside AC. |
| Unresponsive remote control | When the AC doesn’t respond to the remote control, start by checking the batteries. If they’re fine, consider a reset as a troubleshooting step. |
| Improving overall performance | Periodic resetting can help refresh the AC’s internal settings and improve its overall performance and efficiency. |
Quick Methods to Reset Mitsubishi Air Conditioner
Now that I’ve explained why we need to reset a Mitsubishi air conditioner, here are some quick ways to do it,
| Method | Steps |
|---|---|
| Hard Reset | Locate the breaker of the air conditioner and turn it off. Next, wait 30 minutes and then turn on the AC using the remote control. |
| Short Circuit Breaker Reset | Locate the breaker of the air conditioner and turn it off. Next, wait 30 minutes and turn on the AC using the remote control. |
| Long Circuit Breaker Reset | You’ve got two choices to reset your Mitsubishi air conditioner. Option one: Turn off the HVAC system power breaker, wait, and switch it back on. Adjust the thermostat and test the AC. Option two: Switch off the condenser’s power, turn off the breaker box, unplug the AC for 30 minutes, switch the power back on, and set the thermostat to ‘cool’. |
| Thermostat Reset (Factory Reset) | You can reset your Mitsubishi air conditioner in two ways. Option one: Turn off the HVAC system power breaker, wait briefly, then switch it on. Adjust the thermostat and test the AC. Option two: Turn off the condenser’s power supply, turn off the breaker box, unplug the AC for 30 minutes, switch the power back on, and set the thermostat to ‘cool’. |
| Reset Button AC Reset | Locate the reset button on the remote control or battery area. Press and hold the reset button for 3-5 seconds, then release it. |
| Power Cycle Reset | If your remote control has a dedicated reset button, press and hold it for 3-5 seconds. If not, try removing the batteries from the remote, waiting for a few minutes, and reinserting them. This can sometimes trigger a reset. |
| Remote Control Reset | If your remote control has a dedicated reset button, press and hold it for 3-5 seconds. If not, try removing the batteries from the remote, waiting for a few minutes, and then reinserting them. This can sometimes trigger a reset. |
What to do If You Cannot Reset Your Mitsubishi Air Conditioner?
Resetting Mitsubishi air conditioners can help, but it’s not always a guaranteed fix.
If a reset doesn’t work, contact a professional technician. Before that, check and replace the air filter if it’s clogged, and keep the area around the unit clear of clutter. If the issue persists, seek help from a qualified technician.
Why My Mitsubishi Air Conditioner Heat Mode is Not Working?
| Issue | Description | Solution |
|---|---|---|
| Tripped Breaker | It cuts off the AC power supply, preventing heating. | Reset the tripped circuit breaker to restore power. |
| Burnt Fuse | Blown thermal fuse due to excessive current flow. Test with a multimeter; replace if lacking continuity. | Replace the faulty fuse to restore power and heating functionality. |
| Clutter | Accumulated dirt obstructs airflow, hindering heating. | Insufficient refrigerant affects heating and may result in leaks. |
| Clogged Air Filter | Clogged filter restricts airflow, impacting cooling and heating. | Replace the air filter annually to ensure proper airflow and heating operation. |
| Dirty Condenser Coils | A clogged filter restricts airflow, impacting cooling and heating. | Clean the condenser coils annually to maintain efficient heating and cooling. |
| Ice Buildup | Excessive ice leads to freezing, reducing heating capacity. | Defrost the AC to remove excess ice and restore heating capability. |
| Thermostat Issues | Malfunctioning thermostat misreads temperature, affecting control. | Check and calibrate the thermostat settings or replace it if necessary to ensure accurate temperature control. |
| Low Refrigerant Levels | Insufficient refrigerant affects heating and may result from leaks. | A malfunctioning thermostat can misread temperature settings, leading to incorrect heating control or no heating. |
