We had/have a problem with ours. We have the extra large Dometic Fridge and just before the Rally last year we changed the bulb as it had burnt out, for some reason I wanted to check the bulb, opened the fridge and grabbed the bulb and OUCH!
Just a warning for everyone, it takes just a few seconds for that bulb to get incredibly hot. It blistered my thumb pretty bad.
Apparently the first bulb had burned out because it was on the always, even when the fridge was shut. Dick pulled the switch out and kept looking at it, he couldn't figure out what was wrong. Finally he actually tore into the switch. Another word of caution here, don't do it unless you know way more than we do. It ruined the switch for good.
If you take plastic cover off and remove the bulb, very cautiously since it's so blasted hot, you can reach your fingers in there and squeeze a couple of clips and push/pull on the switch it will come out.
I called Dometic and they told me they could send a new switch to my dealer but that it would take well over a week. I mentioned that Dometic would be at the Rally and I could ask them to supply me with a switch. I thought that was a great idea.
At the Rally I called the rep that was coming to do the seminar and he said he would check to see if they had our switch in stock and bring it the next day at the seminar. Well after the seminar I met with him, they didn't have the switch. He explained that it probably wasn't broken to begin with but rather the switch on top hidden by the freezer door was probably in the position for a high humidity enviroment. I'm guessing the heat generated from the light bulb helps the perspiration that accumulates by the seals evaporate?
We still don't have the switch replaced yet. Winter set in and the Montana sits in the back yard lonely and sad.
I'm supposed to take it down to Goshen for some repairs and I'm hoping then I can fix it.
Sorry it turned out to be such a long post for a simple question. At any rate if you'd like me to go out there and take pictures of it in place and out I can do that for you and post them here. It may take until Wednesday for me to do it as I have a double shift tomorrow at work.
Mel it's interesting that we both have been given a different explanation as to what the two switches do on top. I know our units are a bit different and our unit newer than ours, but it should be similar regardless. I know the switch was the same as the one in the Models at the Rally.
Patty