Fujitsu is a good brand.
try one of these two things:
Turn the unit off then on again. After that press test button on remote control (rear side) and look how many times now operation and timer LED flashes. Note that. Then press MANUAL/AUTO button on indoor unit until you hear 3 beeps from buzzer. That will erase error memory.
Switch off and than on unit and see if indication repeat or it is gone. If it is gone, keep using your unit.
If it is repeated post your notes here.
OR+++++++++++++++++++++FOR OTHER MODELS
5 x Operation flash and a constant Timer flash indicates an outdoor unit control error. With this code flashing on the indoor unit, you need to point the remote at the unit and push the test run button. The flash pattern will change to a continuously flashing Operation light and a number of flashes of the timer light which gives more detail on what the error is.
To get the unit to try to restart you need to push and hold the manual/auto button on the indoor unit for a few seconds then reset the mains power supply but leave it off for a minute or so for the unit to power down completely. If you are going to try this make sure you make a note of any error codes first if you have to get someone out to look at it, it will help them a lot.
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SOURCE: flashing lights on system
Maybe the unit is on test run, try to push the test run button of remote control pointing the remote to the unit receiver.
SOURCE: Fujitsu Inverter ASTA09LCC - heating not working
Use a pen to hit the reset button on the remote.
SOURCE: TOYO TA-09CHS aircon problem
TOYO mini split air conditioner made in Japan is very very good quality and it can runs for 20 years without any problem. You didn't hire a best ac technician to install your TOYO unit. The tubing connection between indoor unit and outdoor unit is not the right torque and refrigerant leak. Your TOYO unit runs out of refrigerant. You need fix the leak and fully charge the system. You will solve the problem.
SOURCE: My Fujitsu air condition had
The unit is under time setting. You have to cancel the timer by dis connecting the power and restart.
SOURCE: Operation and timer light flash
Please cancel your timer setting by reset the power. And also remove battery from your remote and reset it. Now start your unit.
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