Diagnosing Airconditioning System

yes I have tested to the point that i get supply to the input of the electronic card but the card is not functioning

I have to agree with Fredski. Unless you have the board schematic and can trouble shoot down to the component level, it's time to replace the unit.

it's pobably just tripped on a safety (like tripped on high pressure), if you can find the model# you can google a PDF which might help but without the proper tools and training I fear you're going to end up with a bigger problem if you try to "do it yourself", good luck

Lagos Nigeria...surely there are aircon technicians there.

Let's assume that you have no choice other than 'fixing' it yourself.

Step by step now.....

You say that primary power is present at the board but the board doesn't function...how are you determining that the board does not function?

do yourself a favor and put the cover back on and call a pro who knows what they're doing

Thank you I will try my best to solve this

From what I've seen, these boards aren't designed to be fixed, even if you were able to locate the problem.

Air conditioners are usually specified in TOR or kW. To diagnose fault in the PCBS of control panel it is a good practice to refer the manufactures manual or technical catalogue with the help of professional technicians who are good in control circuits.

Hi Yinkebo,

Your original question followed up by your replies tends to make me wonder if you actually understand what you are asking?

Panasonic air-cons come in a variety of different models with different sizes in each range - 2,5hp could apply to any one of a number of units. You fail to say where this board that you are enquiring about comes from - indoor or outdoor unit?

Any air-con technician would (should) firstly familiarise themselves with the fundamental details i.e. :-

1) the make, model number, age of the unit (serial number is useful), type of refrigerant etc. These are basic requirements!

2) the nameplate details - for a Panasonic the model number will be prefixed by CU-*** for the condenser unit (outdoor) and CS-*** for the evaporator unit (indoor).

3) is it a mid-wall split, cassette, hideaway unit, inverter unit, multi-zone?

4) does it have a wired or wireless remote controller? With Panasonic unit's an 'error code' would be displayed on the remote indicating the code for the failure! Not only that but LED's on both the indoor and outdoor control boards are fitted with LED's that illuminate to indicate the operating condition.

5) what is the description of the fault? Note that 'doesn't work' does not qualify as a technically acceptable answer!

6) where did the board come from - indoor or outdoor unit? Each Panasonic board is clearly identified with a part number which should be quoted when making any enquiries.

I am sorry Sir, but your inability to ask a question where you provide any information makes me believe that there is a serious risk to both your safety and the safety of the unit. My suggestion is rather follow the advice of the other respondents and seek professional assistance - it's a lot safer and cheaper.

Should you wish to get more involved with the technicalities of air-conditioning then I would recommend that you first attend the preparation course and upon the successful completion of that, enroll for 'Air-con 101' at your local Technicon.

I think that if you examine the air-con or read the user manual you will find the warning ' No user serviceable parts inside' which was put there purely because they felt a responsibility for your safety!

Sometimes when I see questions like this I think of 'Lemmings' and utter the words "Whisky Tango Foxtrot".

I trust the above is of assistance to you!