From day mode enter your eng code, if correct eng code entered then all 8 zone LEDs should flash, press button 8 to enter the timer menu.
At this stage if LEDs 1 or 3 are lit, or both then press 2 to disable the timer,.
If you go in and all appears ok then it's a new panel I'am afraid to say, don't waste your money getting an engineer in,buy a new system.It probably has a bad joint somewhere on the board.
e manno
July 2012