No, unless you consider 50 degrees Celcius to be the temperature of the sun. The claim of a cold fusion reaction by Fleishman and Pons was a claim of a theorized nuclear action of unknown process to explain a 20C degree rise in temperature of water during an electrolysis experiment.

They never claimed to produce temperatures anywhere near that of the sun, and so far as I am aware, neither has anyone else, for a cold fusion reaction. There is presently little actual or theoretical support that a cold fusion reaction is possible.
Source(s):
http://en.wikipedia.org/wiki/Cold_fusion#Fleischmann-Pons_announcement

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The (in)famous report of "cold fusion" by Pons and Fleischmann turned out to be a false alarm. They claimed to have triggered the fusion of deuterium nuclei in a glass beaker using simple electrochemistry (passing current between two electrodes in a container of heavy water). Their evidence was an increase in the water temperature. The process was called "cold fusion" because it occurred at room temperature instead of the millions of degrees believed necessary according to accepted models of nuclear physics. Unfortunately, the Pons-Fleischmann results have never been duplicated. Their reports of finding fusion byproducts have been refuted, and the observed temperature increase was likely due to experimental error.

http://physicsworld.com/cws/article/print/1258
http://en.wikipedia.org/wiki/Cold_fusion

The only known process by which fusion can take place at temperatures cooler than the core of a star is muon-catalyzed fusion. However, muons have short half-lives and don't last long enough to catalyze enough fusion reactions to recover the energy cost of producing them. Furthermore, muons can adhere to the alpha particles produced in the fusion reactions, putting an end to their use as catalysts. Until some cheap source of muons is found, muon-catalyzed cold fusion is little more than a laboratory curiosity.

http://en.wikipedia.org/wiki/Muon-catalyzed_fusion
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