I have deka ceiling fans too and as per the posting here they:

1) produce intermittent "crack" cracking sound when in use.

2) built quality is low for their asking price

Deka should take heed of these complaints here.

I am surprised this thread is still alive after so many complaints of Deka fan products. The conclusion is:

1. Deka distributor in malaysia dun care shit about customers complaint. they never responded to any threads here.
2. Dun try to make your deka fan go faster by changing the cap. Look at all the fan blades fell off pic in the earlier posting.
3. Low quality product with high price tag. stick to the reputable brand.

Most retailers are dumping these Deka fans in stock lately. So you may get good price for them now. But remember these are POS product. It is rumoured that the Deka brand will be removed from the marker and later remarket as another brand due to all the issues they have not been able to solved.