Trouble light blinks 3 times - Heating & Cooling

Either the Standby voltage is missing or the main board is defective.

Hi Rajneel,
I hope this link is of some help to you
Good luck
http://www.climatecenter.co.uk/wcsstore/ClimateCenter/Attachment/downloads/fujitsu-trouble.pdf

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/

Electro help Try this site to get more details.

you need to access the trouble code to better define the problem. insert key into ignition. you will need to turn the key to the position just before the engine cranks; the dash lights will be on. now turn the key back one click. You need to do this a total of 3 times ending in the on position( dash lights on-not cranking). Your trouble code will either show on the odometer( if it's digital) or will blink on the check engine light. count the number of blinks-pause-blinks etc. jot the numbers down. You can google the numbers to see what system is at fault.

thats your on board computer telling you that all is fine with your car. if there is trouble,it will blink as you stated,then be followed by a series of erratic blinks,these are called trouble codes,and tell you what part is going bad.

you have a trouble code turn key off and on 3 times to make dash lites go on then off and on the 3rd time leave the key on and watch the lite it should start to blink count the blinks and let me know be careful cause there will be paulses betwin some to make up your trouble code ie 2 3 eqals code 23

http://www.chrisandnat.com/projects/BlinkingTV/Blink.htm