You can replace fan by a similar cooling fan. Since controller detects fan speed through power consumption of the fan, so please use a fan with similar (SUNON ME92251V2-0000-C99) specification.

You can contact with our local distributor for possible replacement part. Some distributors have fan modules for customer replacement.

Distributors can be found in our web site:
http://www.areca.com.tw/wheretobuy/main.htm