Question about Air Conditioners

2 Answers

Fujitsu split system

The Operation and Timer lights are flashing sinultaneously we have tried all the things sugested in the operators manual but they are still flashing, and of course it has to play up now when we are heading into 39 degree heat.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 236 Answers
Re: Fujitsu split system

I you already tried the power supply reset in the unit ("off" and "on" the supply) may be there something wrong with your thermistor, out of range thermistor can cause error display (flashing LED).Or running the unit with under charge refrigerant is also one of the cause. If the unit operates but no cool at all then that is the cause of error display. Please call a qualified technician to check your unit.

Posted on Dec 31, 2007

Re: Fujitsu split system

Turn off mains power at the breaker.
if you have an isolator at the indoor and out door unit, switch these on.
turn the power back on at the breaker.

Posted on Feb 04, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Fijitsu wall mounted split system operation and timer lights are flashing, and the air con is not blowing cold air, only like fan operating even in cool mode.

This the common problem with all a/c holders. Without knowing the function of Timer on and Timer off, if it's pressed the unit will start only at setting time.

Please remove the battery from your remote and reset it. And then with use of your manual, set the timer if you need., otherwise normal function will be activated.

Dec 11, 2010 | Fujitsu Air Conditioners

1 Answer

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...

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.

Jul 11, 2010 | Fujitsu 24C1 Air Conditioner

2 Answers

Looking for LED flashing light Error codes for FUjitsu AC

communications error
try resetting the breaker
this should clear the eprom

Dec 13, 2008 | Fujitsu 18C1 Air Conditioner

1 Answer

Fujitsu ASU9RLQ

check indoor unit sirkit board

Mar 10, 2008 | Fujitsu 18C1 Air Conditioner

Not finding what you are looking for?
Air Conditioners Logo

Related Topics:

891 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Conditioners Experts

Mike Butler
Mike Butler

Level 3 Expert

6674 Answers


Level 3 Expert

1033 Answers

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Are you an Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides