Electrolux Gas cooking range

[kgp]

Model Number: EW30GS665GS9
Brand: Electrolux
Age: 1-5 years

My electrolux cooking range was beeping and showing F15 error code on the screen when we came back from vacation. Most likely there was a power outage, while we were gone.

So, I unplugged the unit's power wire from the outlet and plugged that back in, and still the F15 error code shows up, the oven cabin light is on and a persisting beeping sound.

Can you please help me resolve the issue.