How can I fix my 3yr old Fisher & Paykel fridge freezer E402B?

Fisher and Paykel fridge freezer model E402B. 3 years old. Active smart display is flashing red and green at a frequency of 1 Hz. This started after the unit had started beeping which didn't stop until I'd pressed on of the buttons on the active smart control panel. Frdige and freezer compartments still appear to be working OK. Does anyone know what the probelm is or can send me a pdf copy of the service manula for this unit. Many thanks.