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Indoor unit works but outdoor unit doesnt

Fujitsu AOT30LCT, indoor unit working and shows 2 flashes on timer led, outdoor unit seems not comunicating as theres no life at all. filter board and icpm has been replaced already

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

notsomot
  • 67 Answers

SOURCE: Fujitsu AOT30PMAL inverter outdoor unit not working

Sounds like your compressor is seized or a start fault. If the unit is under five years old it should be under warranty. Call Fujitsu warranty out to have a look at it for you.
Contact details as follows
http://www.fujitsugeneral.com.au/contact.php

Sorry but either way I think your going to need a part there is very little that I can do unless your in WA.

Hope this helps

Posted on Jan 11, 2009

  • 14 Answers

SOURCE: System will not start up.

This is a signal fault between the indoor and outdoor first make sure the dip switches are set start with the unit closest to the condensor set as unit 1 then next unit as 2 and so on the dip switches are inside the indoor unit on the pc board if you check the manual it will tell you which swithes to set, if this wasnt done when the units where installed they would have never worked i would also check the signal wiring between the wallmount and the splitter box / bc box and make sure there isnt a loose connection when you have ruled this out id say more than likely it is a faulty indoor board on the wallmounted unt

Posted on Apr 08, 2009

  • 21 Answers

SOURCE: split unit, I get heat but no cold

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

Posted on May 22, 2009

jgwhomeequip
  • 1902 Answers

SOURCE: Fujitsu mini split outdoor unit not running, but indoor unit is running after turnning on

Check the disconnect switch and make sure that both the fuses are good and not shot. If one is shot then the system wont work. There are two fuse. Also be careful due to you will be working around 210 volts

Posted on Jun 01, 2009

  • 10 Answers

SOURCE: fujitsu outdoor unit not working

Its possible there has been a power spike and it has dammaged the power pcb. Remove the cover and inpect the PCB's for blackening. If any blakening replace the damaged PCB.

Posted on Jul 15, 2010

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1 Answer

Fujitsu asta24 Lcc timer light flashing all the time even when off no cool air coming thru


A continuous blinking timer light is a "model error" meaning the indoor and outdoor unit is mismatched. If the timer light flashes a number of times, pauses, then repeats, count the number of flashes and then you can work out the error code.

Nov 17, 2016 | Fujitsu Heating & Cooling

1 Answer

I have two flashes on the timer light of my indoor unit of Fujitsu Inverter ASU9RLS


Serial signal (reverse) error, at operation start up. operation led - off, timer led - 2 flashes, coil dry led - off, check wire between indoor and outdoor

Jul 10, 2015 | Fujitsu ASU9RLS2 Single Zone Wall Ductless...

1 Answer

ASTA09JEC Fujitsu model number operation light not on but time light (red/orange) flashing turns on then turns off automatically I have tried the reset button and turned the timer off on the remote


This is a serial signal error which means the outdoor unit is not talking to the indoor unit or vice versa. Most likely the outdoor board is stuffed but you need to count how many times the timer flashes to be absolutely sure which error it is. If you turn power off at the isolator for 5 mins then restart, this can sometimes clear an error caused by power supply fluctuations. If not, you will have to replace one of the boards. Indoor board allow around $200 - $250, outdoor board allow around $300 - $400.

May 09, 2015 | Fujitsu Heating & Cooling

1 Answer

Repeating flash


Serial signal (reverse) error, at operation start up. Usually a faulty outdoor controller board but this one has about six PCB'S in the outdoor unit so your going to need a tech to look at it.

Jan 23, 2014 | Fujitsu Heating & Cooling

1 Answer

It shuts off and blinks 11


AHX18MEV
4 - 12
[8] SELF-DIAGNOSIS FUNCTION
1. Indoor unit
(AH-X18MEV, AH-X18MEV-1, AH-X24MEV, AH-X24MEV-1)
To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
• The operation lamp (red), timer lamp (orange) and Super jet lamp lighter) flash to indicate the information of malfunction.
(Display of self-diagnosis result)
The operation lamp (red) and the Super jet lamp (green) flash in synchronization with the timer lamp (orange).
(AH-XP18MV, AH-XP18MV-1, AH-XP24MV, AH-XP24MV-1)
To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
• The POWER CONSUMPTION indicator indicates the information of malfunction by showing the main category error (number) and the sub-category
error (-number) alternately in 1-second intervals.
Example: Compressor high-temperature error
Remark

3. CHART
<INDOOR UNIT> ?:1-second ON / 1-second OFF
Problem
symptom
Outdoor
unit indication
(LED1)
Indoor unit Malfunction
No.
Content of diagnosis Check point Action
Lamp Main Sub Main Sub
Normal
condition
Normal
blinking
? ? ? ? ? Timer (Orange) 0 0 Normal
Operation (Red)
Super Jet (Green)
Indoor and
outdoor
units do not
operate.
1-time ? ? ? ? ? Timer (Orange) 1 0 Outdoor unit
thermistor
short-circuit
Heat exchanger
thermistor short
circuit error
(1) Measure the resistance
of the outdoor
unit
thermistors.
(1) Replace the outdoor
unit thermistor
assembly.
? Operation (Red)
Super Jet (Green)
? ? ? ? ? Timer (Orange) 1 Outdoor temperature
thermistor
short circuit error
(2) Check the lead wire
of the outdoor unit
thermistor for torn
sheath and shortcircuit.
(2) Replace the outdoor
unit thermistor
assembly.
? Operation (Red)
? Super Jet (Green)
? ? ? ? ? Timer (Orange) 2 Suction thermistor
short circuit
error
(3) No abnormality
found in above
inspections (1) and
(2).
(3) Replace the outdoor
unit control
PWB assembly.
? Operation (Red)
? Super Jet (Green)
? ? ? ? ? Timer (Orange) 3 2-way valve
thermistor short
circuit error
? Operation (Red)
? ? Super Jet (Green)
LED1
AU-X24MV, AU-X24MEV
AU-X18MV, AU-X18MEV
LED1

May 27, 2012 | Sharp Heating & Cooling

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

1 Answer

System will not start up.


This is a signal fault between the indoor and outdoor first make sure the dip switches are set start with the unit closest to the condensor set as unit 1 then next unit as 2 and so on the dip switches are inside the indoor unit on the pc board if you check the manual it will tell you which swithes to set, if this wasnt done when the units where installed they would have never worked i would also check the signal wiring between the wallmount and the splitter box / bc box and make sure there isnt a loose connection when you have ruled this out id say more than likely it is a faulty indoor board on the wallmounted unt

Jan 27, 2009 | Fujitsu 24C1 Air Conditioner

1 Answer

Fujitsu AOT30PMAL inverter outdoor unit not working


Sounds like your compressor is seized or a start fault. If the unit is under five years old it should be under warranty. Call Fujitsu warranty out to have a look at it for you.
Contact details as follows
http://www.fujitsugeneral.com.au/contact.php

Sorry but either way I think your going to need a part there is very little that I can do unless your in WA.

Hope this helps

Jan 05, 2009 | Fujitsu 18C1 Air Conditioner

1 Answer

Fujitsu outdoor unit not working


Its possible there has been a power spike and it has dammaged the power pcb. Remove the cover and inpect the PCB's for blackening. If any blakening replace the damaged PCB.

Sep 02, 2008 | Fujitsu 36CS Air Conditioner

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