Originally Posted by Ramn4ver
Our Dometic microwave never worked from the beginning. Replaced with a second....no luck. Two months later I gave up. Bought a residential microwave from the local store. Worked for 13 months...12 month warranty....lol..tossed it in the garbage. Went to Home depot. Bought a LG convention/microwave. Works great. Good luck.
From what I have found, the Dometic is a re-labeled LG. Ours has been great. We never use the range oven (guess we will now). Looking at LG support, F5 is a damper switch failure. Also popped up an F1 code one time, which is bad thermistor.
I'll call our service guy tomorrow. Hopefully he can get a new one pretty soon.