Aircon Frequently Asked Question – One of several reasons. The unit is positioned incorrectly, causing a lack of air circulation. It could indicate a problem with the motor. Most models display error codes, remember to check these on the manufacturers’ website.
It could be a leak in the refrigerant which would need to be dealt with asap, and preferably by professionals, Leaving it or attempting to do it yourself could cause long term damage.
The filters purify the air; if they’re not clean, then the fresh air that should be dispersed around the room is going to be anything but. Refer to the unit’s manual on how to clean the filters.
The unit has either developed a fault or shut itself down. These machines are clever little devils and come with a self-diagnosis function, allowing the user to grasp the problem at hand fully.
Mitsubishi units have a self-diagnosis facility so that when things go wrong, the user will see a flashing light on the panel. This allows both consumers and contractors to get to the root of the problem quickly.
When you clean a unit, it’s not uncommon for the louvers’ bottom clasp to be out of place. This is indicated by two continuous blinking lights in the bottom right.
If your unit has a reset button, firstly, make sure you have a full power supply, then it’s just a case of holding the reset for three seconds then release. After a few moments, repeat the process, and the airconditioning should respond indicated by three beeps.
If you don’t have a reset button, then you first need to unplug the system, shut off all power to the unit, and then switch off the power on your main electrical panel in your home.
Wait for half an hour before firstly plugging the system back in, and then go back to the main electrical panel in your house and flip the switch to on. There is no need to power on the unit at this time but, when the time comes, make sure the thermostat is set to cool.
Firstly check to see that the thermostat is set correctly. Check the unit’s filters for any dirt; they may need cleaning or even replacing. If clogged up with dust, they won’t allow for enough airflow. A build-up of ice could be the culprit.
Filters and coils can get dirty, resulting in a reduced flow of air. It may also indicate low refrigerant levels.
The problem arises when you need to turn it back on. The room may be so warm that the airconditioning has to work even harder to cool it down, in turn consuming more energy than initially saved by turning it off.
It’s probably a better idea to turn the thermostat up when you leave the house, helping maintain a healthy humidity level.
Any unfamiliar loud noises coming from the unit when you turn it on could be an indication. When a compressor goes wrong, you will notice a distinct reduction in airflow from the vents.
Any moisture leaking around the unit and constant tripping of the main circuit are also pointers to a bad compressor.
It will, but it could result in a costly repair bill or even a total breakdown of the system. Aircon units need a specific refrigerant charge; if it drops, the whole system is affected, causing any number of problems.
There could be a build-up of ice on the refrigerant line if levels are running low. Hissing noises and bubbling sounds would indicate a refrigerant leak resulting in low levels. A sudden hike in electricity bills could be another indicator that your freon levels are low. Remember to get any leaks fixed.
If your home never gets cool as the air dispensing from the vents is warm, or unusually high energy bills. Check for ice on the refrigerant lines also.