Hi Need some of that great adviseLost all DC when on House Batteries,Generator,Shore Power,Truck Alternator No DCNew batteries checked with voltmeter read 12.4Power in & out of converter OKCant understand why no DC Driving me crazy Do not have a clueWas camping at Doran Park on the coast & lost all DCHad to dispose of all food in the refrigerator,no water pumpPlease HelpThanksTed

blown fuse would be the cheap/easy answer. There is often a second fuse in the line from the battery to the converter, besides the fuses in the converter. Check them all.If you have power going to the converter as shown by that voltmeter and all fuses are good, then it's also possible that the converter itself took a dump and may need replacing. That would be the expensive/difficult answer.

Sometimes they have a self resetting circuit breaker also that may have gone bad right by the batteries. Also bad ground connection.

Your power out of the converter is "ok" but no DC from that or battery. So it is about the DC fuse panel not being connected to either battery or converter. Those connect with wires from each going to the set-screw lugs on the fuse panel. There can be lugs on the back of the panel not just on the front.If you measured the converter output as being ok at the fuse panel but no DC, then suspect the fuse panel has lost its ground to the frame (sometimes shared with the 120v ground --the bare wire going from the shore cord by the "main" circuit breaker. However, that might mean no ground for the 120v either.You had a frame ground issue at the battery bank that you fixed. Maybe the same thing only now it is the fuse panel's ground?

If no DC at the fuse panel but DC at the converter then you have an open line between the two. The open line can be as simple as a breaker popped or a loose connection at either end. 12.4 volts is a dead battery so those are not getting charged.Model of rv might help.

Hopefully one of the answers will solve the issue, but make sure all batteries and all the connections they go to have been taken apart and cleaned. Battery connections can look fine but can be a common problem.

Forum Discussion

HavingProblems7

Explorer

Dec 29, 2017

No DC

Hi Need some of that great advise
Lost all DC when on House Batteries,Generator,Shore Power,Truck Alternator No DC
New batteries checked with voltmeter read 12.4
Power in & out of converter OK
Cant understand why no DC Driving me crazy Do not have a clue
Was camping at Doran Park on the coast & lost all DC
Had to dispose of all food in the refrigerator,no water pump
Please Help
Thanks
Ted

12 Replies

Ranger_Smith
Explorer
Dec 29, 2017
Sometimes they have a self resetting circuit breaker also that may have gone bad right by the batteries. Also bad ground connection.
naturist
Nomad II
Dec 29, 2017
blown fuse would be the cheap/easy answer. There is often a second fuse in the line from the battery to the converter, besides the fuses in the converter. Check them all.

If you have power going to the converter as shown by that voltmeter and all fuses are good, then it's also possible that the converter itself took a dump and may need replacing. That would be the expensive/difficult answer.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,370 PostsLatest Activity: Mar 16, 2026

Forum Discussion

No DC

12 Replies

About Technical Issues

Related Content

DC to DC charger

DC-DC Charging ?

dc to DC Renogy charger

Renogy 20A dc to DC report

Lance TC - lithium - DC-DC charger question