How to fix p8 error code mitsubishi mr slim air conditioning

error p8 is coming in the remot unit after 3 mintus

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.

P8-Abnormality in outdoor unit.
1) Wrong wiring of indoor/outdoor
connecting wire
2) Reversed phase
3) Protection device is working
4) Damaged outdoor coil thermistor

Solution:

1) Check the indoor/outdoor connecting wire.
2) Change the connection of electric wiring.
3) Check the protection device.
4) Measure the resistance of the outdoor coil thermistor.
If the resistance is normal, replace the
outdoor controller board.

Hope,it's helpful.

Code P8
Error detail Abnormality of pipe temperature. Due to less pumping in compressor or short of gas.

Hi,
P8 usually is caused by a low charge...

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


heatman101

8 flash is a pipe temperature error.

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

P8 error is abnormal pipe temperature indoor. If you are running it on heating P8 error will appear because the disc pressure is too high. It could be overcharged.

I Have same problem

I am not familiar with a P8 code nor do I understand where you are seeing this But, go to mrslim.com 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!