Question about Mitsubishi Mr. Slim MXZ30TN Air Conditioner
Posted by Anonymous on
I just got the same problem, and the operation light is blinking 7 times.
Posted on Jul 09, 2017
I had the same problem and I found it was that another unit had the heat running while I was trying to run AC on another (they're both attached to the same condenser) so it could only run heat or AC not both. Turn off the heat!
Posted on Jun 03, 2014
that is an error code.
count how many blinks after a pause and that would be the error code.
could be 4 , 5, 7, or 9.
you could reset it by un plugging or removing power for ten minutes and try it again.
if the problem would re-occur, then there is something wrong with the unit.
as it runs, observe everything and keep me posted. see if the fn outside is running, if the filter is clean, or if the compressor is running, etc.
tnx 4 using fixya,
Posted on Oct 04, 2008
turn the power off to it by the breaker and let stay off for about 20 minutes if its a lil glitch usually his will resetit if not ur going to have to call a repairman these are not like ur usual units and no easy to work on even for a technician
Posted on Feb 26, 2010
Here is where you can find all the info you will ever need about Mitsubishi Air Conditioning units...
Check out this tip that I wrote about that...
Mitsubishi Air Conditioner Troubleshooting and Repair
Posted on Aug 20, 2010
mr Slim A control R407c & R410a systems.
P6 = indoor coil frost protection in cooling or indoor coil overheat protection in heating.
One of the 2 indoor coil sensors reads minus 15 deg C for 3 mins.
One of the indoor coil sensors reads over 70 deg C.
If you are sure the refrigerant charge is correct & system operation is correct then it could be a coil temperature sensor reading wrong temperature.
If you have one of those little monitor things which plug into the outdoor circuit board you can monitor the indoor coil temperature.
On later type remote controllers you can get all operating data like temp sensor data but you will need a service manual to do this.
Or you can measure the ohms resistance of the temp sensors & compare with the chart in the service manual. if you can do it by yourself do if not then contatct ot mitsubishi maintenance personnnel for furhter action, thank you hope answer the question please vote!
Posted on Sep 23, 2010
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