Question about Fujitsu 24C1 Air Conditioner

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The operation and timer lights on my Fujitsu split system are flashing on and off several times when the unit is switched off I noticed this after the system had stopped blowing air & I knew the room temperature was well below the set temperature. I increased the temperature to get it going again nothing happened. I checked the timer and the sleep mode I've followed the instructions in the manual thinking maybe the timer was on or it could have been on sleep mode I cancelled the sleep and timer mode (both modes are off as far as I can tell) I turned the system of*** together and the operation and timer light are intermittently flashing I wait more than 10 minutes turn the unit back on and the lights continue to flash but the heat is not coming out. I'm not sure what else to do? I've also tried turning the main power off thinking this may reset the system but this hasn?t worked either the lights are flashing weather the system is on or off and no heat is being produced. I?m so frustrated

Posted by Anonymous on

  • Anonymous Mar 31, 2014

    my ac suddenly stop working after 10-15 secs. before that i used smart mode and turned it off before going to sleep without canceling the smart mode, and now it won't operate anymore. ac model singer AC6128K

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I have same problem like yours to my newly installed Fujitsu multi-split system (the first time use since system installed 1 week ago). I rang the electrician who did the installation; he said it must be the units themselves nothing to do with electricity.

Okay, then I rang Fujitsu and their local service agent. They suggested me to switch off C/B for an hour to reset the units. I followed the instruction but the indoor units still did not respond to remote control...

It simply looks like no power supply to indoor units (they are hard-wired to the outdoor unit). So I used a multi-meter to test the power terminals of indoor units (Danger! If you have no idea about this, don't even try! ): it seemed no power supply even C/B is on. I turned to the isolator which next to the outdoor unit. The isolator was making arcing noise when I switched it on and off. The indoor units suddenly turned on for few minutes then died again.

So I figured out the problem is that crooked isolator. I called the unhappy electrician to replace the isolator. End story....

I hope my experience will help you a little bit.

Posted on Nov 23, 2010

  • teng872312 Nov 23, 2010

    Oh, Sorry, I double posted to wrong question....

    Please ignore my last post.

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