Mitsubishi Starmex Vs Mitsubishi Heavy Industries
When we talk about Mitsubishi, your mind would have pictured three diamond-like shape in red. Yes! That is exactly what the name Mitsubishi described. Do you know that Mitsubishi Starmex and Mitsubishi Heavy Industries are two separate brands operating under the three-diamond emblem.
Mitsubishi Starmex, also Mitsubishi Electric, has developed high quality and reliable aircon system in Singapore, serving its most advanced aircon technology to provide the best comfort for its consumers. Although Mitsubishi Electric offers durable aircon units, Mitsubishi Heavy Industries has better durability for its aircon technology. In terms of size, Mitsubishi Heavy Industries offers aircon with bigger capacity that serves bigger rooms.
Why is my Mitsubishi Aircon light Blinking?
Just like any other brands, Mitsubishi Aircon light blinking is an indication of problem with your aircon unit. When see the blinking light, you should initiate to check the error code as soon as possible to avoid the actual breakdown caused by the faults or error. This article is very helpful for you to find out more about the following:
Mitsubishi Aircon Blinking Green Light
When Mitsubishi aircon blinking green light, the aircon is in the self-diagnosis mode which automatically stops operating and telling you that something is wrong. However, please make sure that the flap is closed properly, or else the light will still blinks even there is no issue. If the continuous blinking continues, it means there is an issue with the wiring, indoor or outdoor PCB.
You might want to reset the aircon system. Simply unplug the power point and turn off the isolator for 15 to 30 minutes. If not, contact a technician to check and rectify the error.
Mitsubishi Aircon Indoor Unit Blinking Light
When your Panasonic Aircon Timer Light is blinking, it could be this possible fault which your aircon is signaling to. Focus on the number of blinks. If there is a continuous blinking, it could be due to mis-wiring at the terminal or serial signal from indoor PCB. For blinking twice, it could be faulty indoor thermistor, or both indoor thermistor and PCB. When the light is blinking three or four times, check the indoor fan motor and electronic control PCB if they are functioning normally.
Read to the next section to see how you can get Troubleshooting Guide for your Mitsubishi Aircon Model.
Mitsubishi Aircon Troubleshooting Guide
To figure out what is the problem, observe the number of times Mitsubishi Aircon light blinked. You may refer to the right side of your wall unit (indoor unit) cover for the troubleshooting code. The table below is an example of troubleshooting code the respective details retrieved from Mitsubishi Electric Starmex msy-ge10va-r1. Unlike any other brands, each pattern for the number of times the light blinks represents a fault.
Mitsubishi Aircon Outdoor Unit Flashing Red Light
In normal operation, both red and yellow should be flashing on the electronic control board. In the situation when you observe the red light flashing in a cycle while the yellow light goes out, there could be some faulty part in the aircon. When the red light flash twice, there is an over-voltage resulting from faulty refrigerant cycle or faulty compressor, which forces the aircon to stop and enter an overcurrent protection.
You might want to refer to the table below:
| LED 1 - RED | LED 2 - Yellow | Item | Possible Causes |
|---|---|---|---|
| Twice | Goes out | Stop due to overcurrent protection | 1. Refrigerant cycle is faulty 2. IPM or compressor is faulty |
| 3 Times | Goes out | Stop due to discharge temperature protection | Refrigerant is undercharged |
| 4 Times | Goes out | 1. Stop due to fin temperature protection 2. Stop due to PCB temperature protection | There is a short cycle at the outdoor unit |
| 5 Times | Goes out | Stop due to high-pressure protection | There is a short cycle at the outdoor unit |
| 8 Times | Goes out | Stop due to converter protection | 1. Power supply voltage is abnormal 2. PFC is faulty |
| 9 Times | Goes out | DC voltage detection abnormality | 1. Power supply voltage is abnormal 2. PFC is faulty |
| 13 Times | Goes out | Fan abnormality | 1. Fan Motor is faulty 2. Fan Motor connector is disconnected or poorly connected |
Mitsubishi Aircon Outdoor Unit Flashing Yellow Light
For Mitsubishi Aircon outdoor units, the number of light blinking signal is usually more than 5 times. If your aircon outdoor unit is flashing yellow light in the electronic control PCB, the solid red light should also be light up. Just like when Mitsubishi Aircon red light blinking, the blinking frequency of yellow light has a meaning to it. The most common situation is when the aircon light is blinking yellow for 7 times, for which the outdoor control system is at fault. If not, you can refer to the table below:
| LED 1 - RED | LED 2 - Yellow | Item | Possible Causes |
|---|---|---|---|
| Twice | Goes out | Stop due to overcurrent protection | 1. Refrigerant cycle is faulty 2. IPM or compressor is faulty |
| 3 Times | Goes out | Stop due to discharge temperature protection | Refrigerant is undercharged |
| 4 Times | Goes out | 1. Stop due to fin temperature protection 2. Stop due to PCB temperature protection | There is a short cycle at the outdoor unit |
| 5 Times | Goes out | Stop due to high-pressure protection | There is a short cycle at the outdoor unit |
| 8 Times | Goes out | Stop due to converter protection | 1. Power supply voltage is abnormal 2. PFC is faulty |
| 9 Times | Goes out | DC voltage detection abnormality | 1. Power supply voltage is abnormal 2. PFC is faulty |
| 13 Times | Goes out | Fan abnormality | 1. Fan Motor is faulty 2. Fan Motor connector is disconnected or poorly connected |
Mitsubishi Heavy Industries Aircon Timer Light Blinking
The number of times blinked will deter the errors of your Mitsubishi Heavy Industries Aircon. The possible errors could possibly mean that your aircon requires servicing or repair. Pay attention to the signals through observing the aircon timer light blinking patterns to determine and troubleshoot the error with the system. If you need a reference for what does the respective number of blinks represent, you may refer to the list HERE.
Mitsubishi Heavy Industries Aircon Timer Light Blinking 6 Times
If you see a solid run light light up but the timer light blinking 6 times, there is an error of communication between indoor and outdoor units. The root cause of this can be due to connection wire is broken or not connected properly. It could also be due to faulty indoor and outdoor PCB, or disrupted power supply.
Mitsubishi Heavy Industries Aircon Timer Light Blinking 2 Times
When Mitsubihsi Heavy Industries Aircon timer light blinking 2 times while timer light lights up, it is specifying the malfunction of room temperature sensor. This is means that the aircon is forced stop due to breaking room temperature sensor wire or poor connection. This warning is triggered when the aircon detects wire break within 15 seconds.
Mitsubishi Heavy Industries Aircon Blinking Light Error
For those that are not specified in above section, this is a consolidated list suggesting the possible problems of Mitsubishi Heavy Industries Aircon blinking light. If you need any further assistance, please approach aircon expertise for professional advice.
