@OP - did you get the solution for this problem? I'm having the exact same problem.
*postimage.org/image/pdw5d3xg/
*postimage.org/image/pe4f1uec/
@asingh &aniket.cain - are you sure about the gas leakage in compressor?
Even my service guy said the same. When I asked to service the A.C [just clean off the outside net filter and inside filter], he refused to do so, saying that it is a problem due to gas leakage and can't be rectified by "cleaning" the filter. He But i didn't want to repair it [as he said it would cost me around 3k].
I found at that, I get this problem, only if I run the a.c with "energy saver" mode [runs the compressor till the set temperature and after it reaches the req. temperature, it shuts down and the regular fan won't be running, like it used to, in normal mode]
Code:
*www.inspectapedia.com/aircond/ACCoilFrost.htm
After reading this article, I came to know that, if i turn OFF the "energy saver" mode, the fan helps in melting the ice, so it seems I'm not getting this problem [but actually the ice forms and melts due to fan]