Sounds as if the insulation has melted and two bare wires are touching .
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Those blink is a code and you can look at the unit wiring diagram section and it would tell you what those code mean
SOURCE: no cooling after power out, indicator lights pattern not in manual
The Mitsubishi units have to be reset by turning off the indoor units by switching the remote or thermostat to off. Then turn off the breaker to the outside unit(s). After 30 seconds,turn on the breaker and then you can turn on the remote for cool. If no lights come on on the inside units, most likely you have blown a fuse soldered on the main PC board. At this point, call your technician. A goos tech will be able to wire in an in-line fuse holder so if it should happen again, you can easily replace the fuse. If you do see a light or two come on at the indoor unit but the outdoor unit does not start after 3 or 4 minutes, sounds like you will need to call a technician. Most likely you have a blown fuse on the main PC board of the outside unit. It is not an easy one to replace. Good Luck!
SOURCE: split system outside unit won't come on for cooling, only heating
Check your filters, dog hair and lack of maintenance will definitely burden the cooling mode of the Mr Slim units.
SOURCE: inside unit turns on, outside doesn't
Could be a wiring problem or a lack of refrigerant. All you can do is professionally have the unit checked and serviced.
Hope this helps
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SOURCE: outside unit do not run.Red light blink 6
That is a trouble code signalling that your unit needs service. It is time to call a professional for help!
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