Question about Fujitsu 24R1 Air Conditioner

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Split unit, I get heat but no cold

Have a Fujitsu 24BTU compressor with two 12 BTU indoor units. The heat worked great for the winter. Now that I want airconditioning the unit only seems to circulate the indoor air, no cooling. Model numbers for indoor units ASU12RMLQ, outdoor unit AOU24RML. I made sure the wiring was correct. Unit is only a few months old. The fan on the outdoor unit is working. I can't hear the compressor kicking in.

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Check for a signal on a demand for heating at the ondensor and thermosat

Posted on Oct 20, 2012

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Unit will not run unless both indoor fan coils are in cool mode.

Posted on May 22, 2009

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I have run into this with the LG brand systems. try shutting power off to the outdoor unit to reset all units. If problem persists, it could have to do with a charge level of refrigerant (freon) or possibly a failed control board.

Posted on May 18, 2009

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Fujitsu split system not working


Hi, I know its a split as you have noted, and I am sure it would be a ductless heat pump system. Unless you are having a problem programming the t-stat, the manual would be of little help on these units.I wish you would have given more on the symptoms, like does it blow cold air or either unit will not work? You say it will not heat. On a H.P., it could be many things.Lets say its blowing cold air. Check the outdoor unit to make sure it comes on in the heat mode also, and the fan is on.Make sure you turn the heat up far enough to bring on the outdoor unit 1st. If it doesn't come on, then find the breaker to see if it is tripped. If yes, turn off hard and on again hard. if it stays on, great. If not, then It gets more complicated as compressor may have shorted out. Please check these things for me, please so we can solve this for you. On a heat pump, if you loose a compressor lets say, you have electric heat strips in the indoor unit that should come on if you have a switch on the T-stat that will say emergency heat. Try and use this setting to see if you can get some heat. I am trying to offer a solution to get you some temp. heat until we locate the main problem. If the indoor or outdoor units are not running at all, check for power at all breakers, and, check program on t-stat to make sure you set on heat, fan to auto, and temp to where you are comfortable.From here after checking all of these solutions, let me know what the status is and if it did not work, to tell me more of the original symptoms so I can go from there. Best of Luck,
Sincerely,
Shastalaker7

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1 Answer

Fujitsu Air Conditioning split unit Model


Your compressor is seized up. shut down unit and let compressor cool down, it may start again but probably needs to be replaced.... sorry for the bad news,

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1 Answer

I have the Mitsubishi split unit system with 24BTU for my bedroom, the problems starts after the compressor has started and the cold air has been blown through the indoor unit, this pleasure lasts for...


Ok, it can be two things.
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  2. The unit has a small refrigerant leak and the unit doesn't have sufficient refrigerant for the system to run thus causing the compressor to shut down on thermal lockout. The problem with this one is that generally the inside coil will freeze up and you will notice that.
Compressors generally won't come on at all if they are bad. You can have a compressor go bad and still be running, but it won't cool at all. A bad install can cause a compressor to fail as well. Generally if the compressor fails within the first 10 years, you can bet it's because it was a poor install. This means that a proper vacuum wasn't pulled on the unit before initial start-up. Hope this helps.

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the split units goes on on and off if a shortage of gas is involved, the chances that you would here it wont be that big for the fans would make too much noise.
get a repair man for a re gas and all is well.

Good luck.

Wouter.

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