Question about Mitsubishi Mr. Slim MXZ30TN Air Conditioner

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No heating from Mr slim

I have a mr slim mitsubishi ceilling mounted unit but there is no heating come from the unit and sometimes a sign o P8 and E0 are displayed in the LCD please help Abi

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  • Anonymous Mar 31, 2014

    please I need the remote control. Where can I find one.



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P8 refers to outdoor protection device activation usually caused by low gas charge or blocked condenser coil. any good a/c company can resolve this for you. however please note that if it is gas related a pressure test must be carried out to determine where that potential leak may be and that can be very costly.



Posted on Nov 14, 2007

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Go to In the Customer Resourses file select library. Select what you want for a guide. I suggest the Operation or Technical manuals. Then select Mr. Slim Spli-ductless. Select M-series Multi-Split and the current. You will need the model number off of the outside unit to be able to pull up info on it. It may be a good idea to get the model number off of the ceiling cassette as well. Research what a P8 and E0 code is.

Typically it may mean low refrigerant or a power problem.

Posted on Nov 13, 2007


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Posted on Jan 02, 2017

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P8-Abnormality in outdoor unit.

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
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Here is a tip about Mitsubishi Air Conditioners and how to get the manuals for all of the mitsubishi line. The manual include both troubleshooting and installation.

Mitsubishi Air Conditioner Troubleshooting and Repair


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Problem with mitsubishi slim

I am not familiar with a P8 code nor do I understand where you are seeing this But, go to and look under Customer resources, Library and then input your model number. Select Technical & Services. Product Catagory is Mr. Slim Ductless, Sub Catagory is M-series Multi Split, Current models. Remember you have inside units and one outside unit. You will need to look at each model number to find information on both. Usually Mitsubishi's will have two lights that will blink in patterns to indicate what could be wrong. The P8 code is new for this Diamond Dealer!

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