ALARM BELL SOUNDS WHEN UNIT PLUGGED INTO 110V

[Big Kahuna]

My 36RL is in storage now. Temp. in central Texas is running around 100 plus degrees. All slides are in. Unit has had no elec. for around 2 weeks. I plugged unit into 110v to run ceiling fan and buzz fans while working inside unit. I connected the 110v into the rv and after about 15 seconds an alarm bell began dinging and lasted about 25 to 30 seconds. ALSO: my batteries are bypassed. ANY IDEAS? ,

[Buddy]

Mine does it too, it is the co2/propane detector.

[Big Kahuna]

http://forums.redwood-rv.com/smileys/smiley4.gif

Thanks Much