It would help if you provided info on your RV, since you don't have it listed in your profile.
Year would give an idea how old the detector is.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
Do you mean the LP detector? Is the trailer plugged into shore power so the batteries can charge? If you are disconnected from shore power your batteries are probably low, if you have a battery disconnect switch you can use that or disconnect the batteries if you are just storing the unit.