Hi Cher, possibly the model is an ADP8112 or similar.Are the lights red? 3 lights on are not a recognised error code.Are the three lights on and the farthest right flashing.
Possibly there is a problem with the pcb.Try this.
With the machine off,turn the power switch on and WITHIN 3 seconds press the P button 5 times.This will bring the right and left end lights on.Turn the power off and then on again.
Hope all goes well.
Foxy, August 2008