Having problems with your Air Conditioners ?

Ac runs for a while then stops and operation light flashes

\015 I have a wall mounted unit in my office that runs well for half hour then stops, the operation light flashes once this happens and there is no airflow, ive had an engineer look at it and he said when he put the gauges on it ( the outdoor unit)was running at 8 bar on the low side and was running at 8 bar but the high pressure side would get up to a very high pressure but then it cuts out,any ideas please?!?\015

Answers :

This can happen in cold humid weather, when you use heating mode and the outside unit freezes up. All my split-type airconditioners do that occasionally when the weather is like that. The inside fan stops for some 10 minutes with light flashing, then it picks up again after the outside unit warmed up.
Hello,\015\012It depends what refrigerant the system is on but if it tripping out on HP it could be overcharged with gas or a problem with the outside condesor fan.

Repair Help & Product Troubleshooting for Air Conditioners
You need a second opinion or clarification ? ask it in the comment box OR you can Ask Your Own Question

Tips for a great answer:

  • Please provide as much detail as possible as this will allow our members to better understand and respond to your Comment
  • If you need clarification, ask it in the comment box
  • It's 100% free, no registration required

Suggested Questions/Answers :

It is recommended you read all this kind of situations

Ac runs for a while then stops and operation light flashes


This can happen in cold humid weather, when you use heating mode and the outside unit freezes up. All my split-type airconditioners do that occasionally when the weather is like that. The inside fan stops for some 10 minutes with light flashing, then ... Mitsubishi MS12TN Air Conditioner

I have a AST30PBA Inverter a/c - it runs for a few minutes then the timer light flashes then the red operations light flashes. Have to turn it off from the downstairs powerpoint to stop everything.


... Fujitsu 18R1 Air Conditioner

Regardless of weather the thermostats are calling for heat or not, or even if I shut the thermostats off completely the fan keeps running. the only way to stop the fan is to shutoff power to the furnace. Does this require replacement of the IFC board or is there something else that I can check first? The system does operate correctly in the heat mode and there are no flashing lights on the circuit board. Both green lights are lit and the orange is not, because I use an electric plenum as my p


I would suggest buying the new unit or calling to have a tech sent out to you to have them fix it. If you can buy the part you'll save money from what the company will charge you, plus labor fees. Good Luck though! Sorry your having such a hard time ... Ruud UBHC Air Conditioner

I have a a/c unit mitsubishi electric ms-12rv r22 when starting it on cooling or heating mode it stops after 30sec and the operating light flashes and the otdoor unit does not run the indoor unit fan stops can you help thanks


Hi,Here is where you can find all the info you will ever need about Mitsubishi Air Conditioning units...Check out this tip that I wrote about that...Mitsubishi Air Conditioner Troubleshooting and Repair ... Mitsubishi MS12TN Air Conditioner

Mitsubish ms-a30vd stops running and the operation indicator light flashes 10 times?


... Air Conditioners

THE RED (OPERATION) LIGHT AND GREEN (TIMER) LIGHT ON MY FUJITSU DUCTLESS AIR CONDITIONER ARE FLASHING. PRESSING THE START/STOP BUTTON ON THE REMOTE CONTROL DOES NOT MAKE IT WORK. SWITCHING THE BREAKER OFF AND ON SOMETIMES MAKES IT START BUT NOT ALWAYS. AFTER IT STARTS IT CAN STOP SUDDENLY, AND THE RED AND GREEN LIGHTS START FLASHING AGAIN. THE RED LIGHT FLASHES 6 TIMES, THEN PAUSES, BEFORE FLASHING 6 TIMES, WHILE THE GREEN LIGHT FLASHES CONTINUOUSLY. INDOOR UNITS MODEL #ASU12D1. OUTDOOR


... Fujitsu Air Conditioners

Have NEC RIH-2667 Inverter Split system.I set to Heating mode,set temp to 25 degrees.The compressor light comes on.The run light flashes for about 30 seconds.Then the vent opens,the fan comes on and starts blowing out heat.Within 5-10 mins the temp on split displays starts going up.when it gets to 26-27 the run light flashs,fan stops,no heat coming out.The temp on system keeps going up to 30 degrees.it takes approx 40-60 mins to come down to 25ish the will come on again and repeat.I have an inde


... Air Conditioners

I have Fujitsu air conditioner Model abt45rba3w Serial t000147 The unit will not operate. The red operation light is flashing fast continuously and the a/c unit will not turn on. The timer light is green and flashes only twice occasionally. All the unit will do is swing the vents but nothing comes out. The unit has worked fine previously but has stopped all of a sudden.


... Fujitsu Air Conditioners

I have a Fujitsu ASTA24LCC heat pump and it has stopped going, but is showing some form of fault code. Operation & Timer lights flash together twice then operation light flashes 5 times. What does this mean?


Check your filters. Manual says they need to be cleaned every two weeks under normal operation (and in my case more often during renovations). It seems it may not take much to limit air flow enough for the indoor unit to trip out. Hope this helps. ... Air Conditioners

When i switch on the AC it works for seconds then it stops the operation light flash and the indicator light goes off not flashing there is no air and the fan stop also


I would suggest you call a company trained on these, make sure the tech is Nate certified, I have worked on these and they are not fun to work on and are not something i would suggest you take on unless your performing maintenance related activity. i ... Mitsubishi Mr. Slim MXZ30TN Air Conditioner

Fijitsu split Model AOTR12LCC not cooling .Internal unit fan operating but not calling on the compressor to run .Room temp 35deg. Red operation light not on but green light flashes once only then two flashes constantly Do you know what fault this code indicates. John Pocock Ensign Rig32 Electrician


... Fujitsu 12R1 Air Conditioner

Model Indoor Unit RAVSM800KRTE Outdoor Unit RAVSM800ATE The air conditioner runs for 20 minutes the shuts of and the operation led light flashes green, the time light flashes yellow the def light flashes organe/red we have had the outdoor unit checked and the compressor and pcb is suppose to be okay but the technician cant get any help to diagnose what the problem is


... Air Conditioners

Toyo Aircon. Starts perfectly. Runs for approx 5 min and then the yellow "timer" light starts flashing and machine stops working. Green power light on...yellow timer light flashing. When you switch unit off and on again..works perfectly for approx 5 min....same 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 ... Toyotomi TIN/TIG-329D Air Conditioner

THE RED (OPERATION) LIGHT AND GREEN (TIMER) LIGHT ON MY FUJITSU DUCTLESS AIR CONDITIONER ARE FLASHING AND PRESSING THE START/STOP BUTTON ON THE REMOTE CONTROL DOES NOT MAKE IT WORK. BY SWITCHING THE BREAKER ON THE PANEL BOX OFF AND ON HAS SUCCEEDED TO START IT, BUT NOT ALWAYS. AFTER IT STARTS IT CAN STOP SUDDENLY, AND THE RED AND GREEN LIGHTS START FLASHING AGAIN. I HAVE HAD THIS SYSTEM FO 5 YEARS. THERE ARE 2 UNITS. THE DESCRIBED PROBLEM IS ONLY OCCURRING ON ONE UNIT. THE OTHER IS FUNCTIONI


Replace the thermistor ... Fujitsu 36CS Air Conditioner

Fujitsu Multi Split Inverter AOT30QMAM4 with: 2xAST9QMACW heads and one - AST12PMACW , - the last of which, (12PMA), has "Operating Lights" fast flashing and "Timer Light" flashing in bundles of four @ 0.5secs. at a time. The unit seems, nevertheless, to be working well. Problem started, as unit was off and is continuous. After being switched off at fuse box, the flashing stops, but re-commences immediately upon start. May I be informed of the cause and its rectification, please?


... Fujitsu Air Conditioners

Model aot24pmal with ast24pba-w,red light flashes continuosly,green light flashes 10 times,outside unit,stops running,have to turn power off,and back on ,unit trys to work,but cuts out again


Hi, that sign you get means the outdoor unit fan drive system is abnormal, and you need to call authorized service technician to check it. ... Fujitsu Air Conditioners

This is a wall mount 3 zone Futisju unit. A/C stopped cooling, operation red light and clean air green light flashes three times in succession then stops for approximately 15 seconds.


Check thermistor ... Fujitsu 18R1 Air Conditioner

Can someone help me with a problem i have with a carrier split system the temp here at the moment is about 43 celsius aircon worked good last nite in same condition but 2day it will run not blowing out cold air then it will stop with light flashing 5 times stop then flashing again for 5 and so on so on what could be the problem cheers


Reset the unit by disconnecting the power supply for 10sec. and "on" again then test. If it won't work, then there is something wrong with the unit safety devices. You need a qualified tech. for this problem. ... Air Conditioners

The unit blows out air ( not cold, room temp) for about 1-2 minutes and then shuts off. when it's running both the loghts are on and not flashing. when it shuts off onlu the 'operation light is on, not flashing, the 'indicator' light is off.


Either the compressor has frozen or gone bad or you have a bad capacitor. You'll need to have this repaired by a tech or replace the unit if it is a window unit. ... Mitsubishi Air Conditioners

I have an ASTA24LCC split system and the unit is flashing a code. The operation light and the timer light is flashing 5 times and then stopping. Any suggestions??


Voltage issue? There should be a diagnostic chart on the wiring diagram. ... Fujitsu Air Conditioners

I have a mitsubishi mr. Slim split ac. When its on it takes only a few minutes n it shuts its self off n the yello operation light flashes. It flashes in pulses of 10 flashes inbetween which there is a kind of long stop with no blinks. I need to know whats wrong!


Your air filter is blocked, check it, and clean it. ... Mitsubishi Mr. Slim MXZ30TN Air Conditioner

Hi my name is Tony and i attended a site with a sharp wall mount split, don't have indoor details but the condenser is a AE-X099E R22 unit. the problem is that on heating the system works fine for about an hour then the indoor fan stops and the yellow light flashes on and off at the same time the compressor stops and the outdoor runs for a while before it stops. any ideas.


... Sharp Air Conditioners

Fujitsu inverter hello my name is jim. my fujitsu works on all areas except heating. when turned on the it makes all the moves as it is about to work but stops as it is frozen with very little air coming out.it also has the timer light flashig constently and the operation light flashes 5 times every 10 seconds. on cooling , dry , fan it seems to power on and all levels of speed work ok.


... Air Conditioners

Mod# A-SMH18SA SER# 2791206189 Heat controller mini-split. Cust says lights flashing on board- he resets it, yet it resumes to just flashing at the board. Nothing runs. Long drive out there- any ideas. Was operating fine a month ago and was tested out. walt


First of all, Heat Controller does not mount any schematics on their systems panels at all and supply no information for the service tech to code the light on the outdoor board. This is unbelievable. Anyway- I found that the electrician had re ... Air Conditioners

Unit works for 5 mins with 2 lights on then stop operating with 1 light flashing any queries?


... Mitsubishi MSZ-A15NA Split System Air Conditioner

A detailed question is important to get you a relevant answers

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
all rights reserved to the respective owners || www.ad-trader.net || Terms of Use || Contact || Privacy Policy
Load time: 0.0702 seconds