Question about Mitsubishi Mr. Slim MXZ30TN Air Conditioner

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Winterization of mitsubishi ductless air conditioner

What do I need to do to winterize the outside unit

Posted by Anonymous on

5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Replacement compressor for Mitsubishi Mr. Slim Air Conditioner

pls no overhauling repair no spare part avaliable for hermetic comp[ressor the right is to change it

Posted on May 02, 2009

  • 534 Answers

SOURCE: outside unit fan not turning no cold air inside.

Ok here we go. It is possible that the capacitor for that fan unit is out or the motor for that unit is out. Without the proper tools i.e. an electrical meter, there isn't really a way to test the unit. The remote should not have anything to do with the unit activating if the is a manual thermostat. I suggest checking to see if either the motor has gone bad or the capacitor has bit the dust. If you have the motor changed make sure to replace the capacitor

Good Luck on your repairs hope I helped you some\
Dave

Posted on Jan 08, 2010

Testimonial: "A very quick response with a helpful reply. "

heatman101
  • 43501 Answers

SOURCE: MMy Mitsubishi Mr. Slim Air conditioner is

Hi,
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
http://www.fixya.com/support/r5643983-mitsubishi_air_conditioner

heatman101

Posted on Aug 20, 2010

heatman101
  • 43501 Answers

SOURCE: i have 2 Mitsubishi electric "Mr Slim" type

Hi,

Have your system checked by a professional.
From what you are describing here it seems as thoug you have a slight leak in the system somewhere and therefore the system is not cooling or heating properly.

Have them check the system... verify the low charge, fine the leak and repair it.
Vacuum and recharge the system...

Then check the operation before you let them out of your sight.

...It can be tough to get some contrators back if you let them go before you check it...espec. if you pay them...:-)

heatman101

Posted on Nov 19, 2010

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1 Answer

I tried to turn on my air coditioning today for the first time this year and my Totaline Themostat P474-1050 won't turn on. Worked fine during the winter and last summer.


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I have a Mitsubishi heat pump that runs well but the outdoor unit does not defrost what could be the problem.


Why does my heat pump ice up in Winter?
Heat pumps naturally ice-up in the winter. It is normal for the entire coil to be covered in a white frost and even light ice, during cold weather conditions. However, it is bad for the entire unit to be encased in ice. This indicates ductless heat pump problems which should be addressed quickly to save energy and avoid serious damage to your ductless unit. These systems should periodically go into a defrost cycle. This keeps the unit running efficiently. If the coils are blocked by ice, proper heat transfer between the coil and the outside air will not occur.
How does the defrost mode work?
When the mini split heat pump goes into defrost, the reversing valve inside of the outdoor unit is energized, switching the system from heat to the air conditioning mode. The outdoor coil becomes the hot, the indoor coil becomes cold, and both - the outdoor and indoor fans shut off. This allows the outdoor coil to melt accumulated ice. When the built-in micro-computer analyzes that all ice have been melted, the heat pump heating system goes back to heating mode.
sanyo-mini-split-defrost.pngA cloud of water vapor may be seen rising over the outdoor unit and a "whoosh" sound can be heard as the refrigerant reverses direction. The entire process usually takes up to 10 minutes (depending on conditions).
How often does the system goes into defrost mode?
Ductless mini-split heat pumps have different ways of determining when to go into defrost. The built-in microcomputer determines outdoor temperature, refrigerant pressures, and several other factors. In colder temperatures the system will go into defrost more often than in warmer.
If a ductless mini split heat pump is severely iced-up in the winter it is possible that it isn't defrosting (though there could be many other causes). Let the manufacturer certified technician check your system

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