Control seems to be working but unit not responding.
I have a Fujitsu AOT30RB split ac and the unit has been starting to not respond to the control, I hav changed the batteries and and took many trys to turn the unit off yesterday but today it wont respond at all. Thanks Snez.
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Re: Control seems to be working but unit not responding.
Check your remote control by using a camera or cellphone camera as your
eyes to confirm if the remote control is ok. Point the remote control
transmitter to your camera and check if a light emits in your remote
control transmitter. If no light then the remote control is defective,
but if the light is present then the remote is ok and the unit
receiver board itself is defective.
Check also if there is a reset or rst button on the remote control, press the button and test the remote.
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Start by replacing the batteries to your remote control and make sure there is nothing blocking the IR receiver on the unit itself. If that is blocked by something hanging on it or tape over it from something hanging on it previously.
There is a receptor on the below the front pannel but the problem could be :
1.Low battery charge in the remote control.
2.The signal cable that connects the receptor to the card(pc board) could be loose/disconnected
3.Try one receptor from a working unit
4.Try a remote control from a working unit
Hi, hild, first thing; stop the AC by remote controler, than select the fan option pressing by mode button and next start the AC, wait 8 minutes, if the unit still blows cold air, the thermistor has to be replaced. I hope this was helpful to you! success!
see the led bulb of the remote control by using a camera then switch on the remote if it blink the remote is good but if not its bad. dont forget to put an battery on it. then test the ac unit manually, if the unit start replaced your remote control.
Did you figure out why the ac wasn't responding to the remote? I am having the same problem. I just cleaned out the filters but it's still not responding to the remote. I have already tried reset button in the remote, which didn't help. I am pretty sure that the remote is not out of battery.
Check in book let supplied along with your universal universal remote. If not listed, in your remote set and then press , or one by one press, still your unit responds. Where it responds, it's your code. Keep remember.
I have same problem like yours to my newlyinstalled Fujitsu multi-split system (the first time use since system installed1 week ago). I rang the electrician whodid the installation; he said it must be the units themselves nothing to dowith electricity. Okay, then I rang Fujitsu and their local service agent. Theysuggested me to switch off C/B for an hour to reset the units. I followed theinstruction 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 tothe outdoor unit). So I used a multi-meter to test the power terminals of indoorunits (Danger! If you have no idea about this, don't even try! ): it seemed nopower supply even C/B is on. I turned to the isolator which next to the outdoorunit. The isolator was making arcing noise when I switched it on and off. Theindoor units suddenly turned on for few minutes then died again. So I figuredout the problem is that crooked isolator. I called the unhappy electricianto replace the isolator. End story....
I hope my experience will give a littlehelp to you...
Hello Bernard the problem u may experience may be dirty contacts on the main board.dissamble the remote and wipe it dry with some 226 electrical cleaner ,re-assemble and test.if problem still exist then you may need a new remote.or it may simply need a fresh pair of batteries