Could be a bad connection, Microswitches,fuse. flat battery or you haven't turned on the 12 volt system, which is unlikely but know someone who hadn't.
email robertwhiting76athotmail.com and I'll send all I have on the C2. substitute 'at' for normal email symbol as this formum won't accept conventional email addresses.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix caravans/motorhomes.