20 Most Recent Mitsubishi Mr. Slim MXZ30TN Air Conditioner - Page 5 Questions & Answers


Could be overheating and a sensor is triggering the machine to turn off or it could be short of gas. Check all pipework connections for tightness and especially look for oily residue on any of them. This would indicate a leak. Unfortunately, if there is a leak, you would require a licensed air con Tech to repair the leak and regas it.

Mitsubishi Mr.... | Answered on Apr 09, 2014


should be on the unit. look for specification plate. or ask someone who knows how to use amp meter if you dont know how.

Mitsubishi Mr.... | Answered on Mar 29, 2014


See this document for P8 code on Mitsubishi Mr Slim MXZ30TN... It is likely you can get the fix just from following the diagnosis steps 1-7. http://www.digelair.net/pdfs/TECHLIT/MITSUBISHI/MrSlim_P-SERIES_Troubleshooting_TIPS.pdf

Mitsubishi Mr.... | Answered on Mar 12, 2014


lift up the front face just above the the outlet vent and you should see them under it 2 of them one on the left one on the right

Mitsubishi Mr.... | Answered on Mar 09, 2014


P8-Abnormality in outdoor unit.

Solution:
1) Check the indoor/outdoor connecting wire in proper point.
2) Change the connection of electric wiring, if reversed phase.
3) Check the protection device, if malfunction, replace it.
4) Measure the resistance of the outdoor coil thermistor.
If the resistance is normal, replace the
outdoor controller board
Thanks.

Mitsubishi Mr.... | Answered on Mar 06, 2014


P8-Abnormality in outdoor unit.
1.Wrong wiring of indoor/outdoor
connecting wire.......................Check the indoor/outdoor connecting wire.
2) Reversed phase......Change the connection of electric wiring.
3) Protection device is working........ Check the protection device.(LP,HP)
4) Damaged outdoor coil thermistor.....Measure the resistance of the outdoor coil thermistor.If the resistance is normal, replace the outdoor controller board.
5) Check out door coil is cleaned. If not do it.
thanks.

Mitsubishi Mr.... | Answered on Mar 06, 2014


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

Mitsubishi Mr.... | Answered on Dec 19, 2013


Your air conditioner is not a inverter model(your model is it a low cost model )and doesn-t work automaticlly when the power is off

Mitsubishi Mr.... | Answered on Dec 02, 2013

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