We bought a Candy GOC58F tumble dryer a month or so ago, and it worked reasonably well up until juuust before Christmas... when it started doing an intermittent pack-in. It would start up as usual, then halt after 10-15 seconds with all lights flashing.
I checked the manual and this did not correspond to any kind of error code. There was nothing in the troubleshooting section to indicate what might be wrong. I cleaned the filter and the condenser, emptied the water tank, and even pulled the machine away from the wall just in case the air inlet was blocked. Nothing helped.
Since user-serviceability is a fruity alien concept in the white-goods market, I just left it and decided to come back later to see if the problem had fixed itself.
Lo and behold, it had! I was able to do two loads of drying with the machine working just fine. Of course, problems that go away by themselves also come back by themselves, so the next time we came to use it, we were back to square one with all the lights flashing again.
So this morning a guy from Comet came to have a look at it. He'd never seen this problem before, and his diagnostic box didn't give him any clues. He said it would need a new circuit board. I await the result of this. If anybody from Candy is reading this, please arrange for your manuals to document all the flashing light codes, even if it means "device borked; return to manufacturer". Also maybe arrange for them to be a little more reliable.
Update 2010-01-16: Well, the guy came back eventually, and said it wasn't the PCB after all, but the temperature sensor objecting to the recent cold weather. The fix is to remove the filter, and stick your hand down the hole until it warms up a bit!