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M/N PU18EK - old 22 unit
Does anyone know for sure if the condenser fan motor on this suitcase Modulates?
P8 code, checked everything and all I see is the condenser fan always @ 100%
Ambient air can get cold at night in this space so I figure the fan might be the problem
01-31-2011, 09:19 PM
I just came across the same model with the p8 code. It was intermitten though. Tech support gave me a web adress with the troubleshooting guidelines they use when on phone with techs. If none post the web link before me i'll go grab it out of the van. I know my cfm modulated.
02-01-2011, 05:41 AM
Yes they do, in the hunt for a specific temperature at a certain point inside the condenser.
Thanks, That is my problem then.
02-01-2011, 08:34 AM
Had tons of trouble with codes on a perfectly charged Mitsu with no problems other than the sensors and circuit board.
After replacement of a circuit board that took 6 months to arrive and costed a pound of gold the problem occurred in another one right by this one.
To eliminate future problems I yanked all the electronic crap out of it and rewired it my way. Its been a long time and no problems since.
02-02-2011, 06:27 PM
yes the fan should modulate. I have this problem along with many others from these mitsu slims. Tech supports answer is always to replace the circuit board. I don't always agree.
02-07-2011, 08:38 PM
IF YOU HAVE ANY QUESTIONS ABOUT MITSUBISHI MINI SPLITS CHECK OUT THIS SITE FOR TECHNICAL MANUALS AND OTHER INFO www.mylinkdrive.com TYPE IN EITHER MULTI CITY OR MR. SLIM AND OFF YOU GO.
Replaced board, contactor, sensors, added time delay, hard start kit. o-load, recharged per mfg specs, replaced control wire, tightened all wires.
Still P-8 code once in awhile
New system arrives for Monday install!
I gave up
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