Question about Mitsubishi MSH09TW Air Conditioner
Inside unit turns on and lights start to flash timer and operation and outside unit does not turn on
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!
Posted on Sep 04, 2007
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 I take the time to answer your question so please rate me
Posted on Jun 28, 2010
SOURCE: mr. slim MSZ-GE15NA indoor unit
There is either a problem with the outdoor unit fan or compressor or there is a communication problem between the two....
Did you check the number of blinks and then check the book to see what it means??...
Mitsubishi Air Conditioner Troubleshooting and Repair
Posted on Dec 29, 2010
SOURCE: When unit is turned on
It's communication error between indoor and out door unit.
Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4
Posted on Jan 06, 2011
SOURCE: outside unit does not switch
I assume you have tried to reset the power to the outdoor unit... this is the first step to torubleshooting your unit....
Turn the power off at the breaker or the outdoor disconnect for a few minutes and then reapply power... then try to restart the unit... this whole process willtake at least five minutes for it to restart...
If the left light begins to blink again it is showing that you have an abnormality somehwere.
You did not list a model number for your unit but here is the tech manual for one of the units that you may have that tells about the led blinking and what it means....
Any of the other model tech literature can be found at www.mrslim.com
Of course if you have any more questions just comment back to me...
Posted on Feb 05, 2011
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