Community Forums

steveoreano · 04-26-2022, 06:03 PM

Has anyone ever lost power to their alarms. The fuse is good.

Old-Biscuit · 04-26-2022, 06:19 PM

Which Fuse?

What type of RV?

LP Detectors are typically wired directly to battery

153stars · 04-27-2022, 09:33 AM

Have you tried to test to a different/good ground to be sure it's loss on power side. Some owners have made plugs and battery clamps to do testing use a fuse rated to extension cord. I can't see your year coach in signature on phone app. But older LP detectors with safety LP shut off solenoid grounded through the solenoid coil and pulse opened valve. It was an odd design unless I'm mistaken the way it's wired. If yours has LP solenoid try cleaning ground or bypass coil to ground.

steveoreano · 04-29-2022, 06:07 AM

Thanks for the tip. I checked for power and there is no power. Also check the ground and there is no ground. It seems like there may be a plug disconnected in the harness somewhere. The solenoid on the LP is active and working. So I am going to check the harness from the LP alarm back to the solenoid. I had an initial look under the fridge there is a door for the heater and i see the harness is looped over the heater and into a plug on the floor and then in goes underneath. Perhaps that plug is bad. Will update when i get some more info.

The bedroom CO alarm has continuity on both power and ground to the LP alarm so i know those wires are intact, but again the bedroom has no power or ground.

153stars · 04-29-2022, 06:38 PM

Ok are both detectors not working.? If low one on kitchen floor Is working and LP/CO in bedroom is eye height, you might just want to get a battery CO or combo smoke detector . LP is heavy and detector should be low to floor. Is it new to you? Did bedroom ever work for you. So you do have an LP solenoid and it's open with no power at LP detectors.? is solenoid coil 12v or 9v on lable?. If both LP detectors have no power maybe some tomfoolery to jump the solenoid open and silence/disable/bypass the detectors, if new to you. Does your kitchen detector have a on of switch just trying to get idea if same as my dead one. Any oddball switches you don't what they do somewhere that may have gotten shut off. I would start checking any other unknown or all fuses , you just never know if there was a bad wire and tapped off something else. If you disable CO /LP fuse does the LP solenoid drop out.

l1v3fr33ord1 · 04-30-2022, 04:04 AM

Steve-

According to the information I have for Monaco/HR coaches of similar vintage, Fuse #2 on the Front Distribution Panel (FDP) feeds the LP/CO detector in the main cabin. It's a 3A fuse. The FDP is in the front-most driver-side exterior storage bay.

I suggest you should add the year and model of your coach to your signature. I had to dig a little to find you own a 2001 Monaco Knight. Its owner's manual is here.

steveoreano · 04-30-2022, 09:28 AM

Hey Guys, Thanks for all your help. I do have the owners manual, all the wiring diagrams etc, and I know about fuse 2 etc. Signature updated!!! Thanks

steveoreano · 04-30-2022, 09:37 AM

Quote:

Originally Posted by 153stars

Ok are both detectors not working.? If low one on kitchen floor Is working and LP/CO in bedroom is eye height, you might just want to get a battery CO or combo smoke detector . LP is heavy and detector should be low to floor. Is it new to you? Did bedroom ever work for you. So you do have an LP solenoid and it's open with no power at LP detectors.? is solenoid coil 12v or 9v on lable?. If both LP detectors have no power maybe some tomfoolery to jump the solenoid open and silence/disable/bypass the detectors, if new to you. Does your kitchen detector have a on of switch just trying to get idea if same as my dead one. Any oddball switches you don't what they do somewhere that may have gotten shut off. I would start checking any other unknown or all fuses , you just never know if there was a bad wire and tapped off something else. If you disable CO /LP fuse does the LP solenoid drop out.

Sorry for the misunderstanding.. I will try and explain the situation a little better. From the "description of the fuse" the two detectors are in parallel with the the LP shutoff solenoid. All three devices would share one common ground and one common power source.

The LP solenoid is working fine. No issues.

The wiring both positive and negative between the two detectors has continuity and is intact.

However, both detectors have no power and no ground!

So, to me this means there is a common plug to the both detectors, or a junction that has been disturbed/cut (whatever) and is isolating both detectors from the main circuit.

I am tracing the wiring back from the forward Kitchen LP detector to underneath the coach near the LP solenoid switch where it should get power from the main branch of this circuit.