error code on a/c

Hello
I have a five year old 9000 btu friedrich quietmaster electronic a/c. Yesterday, I noticed that all the lights on the display were blinking, and a/c wouldnt turn on. I unplugged it, and plugged it back in and nothing happens. The display reads 00. If I mess around and press other buttons, the display will change to C5. Can anyone tell me what is happening? It would be much appreciated.
Much regards
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Google is your friend.
http://www.friedrich.com/pdf/prod_quietmaster.asp
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wrote:

Thanks for the link, and I looked at it before posting here. Maybee I am looking in the wrong place, but I cant find in this documentation where a c5 code is mentioned.
Much regards
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