How to reset a Mitsubishi air conditioner

The process of resetting a Mitsubishi air conditioner requires that you wait for it to complete before your unit operates perfectly again.

When your air conditioner malfunctions unexpectedly, it can be frustrating. Sometimes the cause of the malfunction can be easy to fix yourself, and other times it can be complicated and can take some time to fix by a professional.

Fortunately, in cases where you can diagnose what is wrong with your air conditioner and fix it, you can have your unit up and running in no time. Sometimes all it takes is a system reset for an air conditioner to start working efficiently again.

Resetting a Mitsubishi AC unit

If you own a Mitsubishi air conditioner that has suddenly malfunctioned, then performing a system reset may be what you need to get your air conditioner running again.

Resetting your air conditioner allows it to be restored to its default factory settings and, essentially, makes the unit start over and work again.

Performing a reset can help with minor and major glitches where your unit simply needs to be restarted and reset to work again. So, how does one reset a Mitsubishi air conditioning unit?

How to reset a Mitsubishi air conditioner

If your Mitsubishi air conditioner has malfunctioned, the solution to fixing the problem is likely a system reset. Resetting a Mitsubishi air conditioner is not as simple as pressing the reset button on your remote.

To perform the reset you first need to ensure the indoor unit is switched off by using your remote control to switch off the thermostat.

You then need to locate the circuit breaker of your outside unit and flip the “Off” switch of the air conditioner. You have to then allow some time for the internal circuit breaker to reset, which can take up to 30 seconds.

After this, you can turn the outside circuit back on by flipping the “On” switch and turning on the thermostat of the inside unit. Ensure the unit is set to the right settings and test it to see if your Mitsubishi is working and cooling properly again.

Another point at which a reset may be necessary is when the remote control is no longer working even though there are working batteries.

In this case, you need to press and hold the power button for a few seconds for it to reset. You can also press the reset button on the remote control.

Resetting the Mitsubishi unit thermostat

If you think that the thermostat is where the problem lies with your Mitsubishi air conditioner, then the thermostat may need to be reset.

A similar process should be followed – flip the circuit breaker of your air conditioner to “Off” and then wait for the reset process to complete after about 30 seconds.

After this , you can flip the breaker back to “On,” head to the thermostat and select the desired heat or cool setting mode, adjust the temperature, and see if it works.

What if the circuit breaker trips after resetting?

After resetting your air conditioner, you may find that your circuit breaker trips. This can indicate that there is a much more serious problem with the air conditioner and diagnosing the problem may be quite difficult.

Possible culprits, however, are a clogged filter that needs cleaned or replaced, and a dirty condenser coil.

Other serious issues could be wiring that has come loose, a faulty fan motor, a leaking refrigerant, or a compressor that has failed, all of which can cause the unit to fail at starting up and can trip the breaker.

Failure to start after reset

If the unit has been reset and you are now attempting to switch it on, you may need to wait a while longer before the air conditioner will turn on again.

Sometimes, there can simply be a delay after the unit has been reset. This may happen if the unit had to automatically switch itself off to protect the air conditioner when it started malfunctioning.

You may have to wait longer than 30 seconds before you press the “On” button and have the unit start up.

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