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Rkortan · 06-29-2022, 04:26 PM

Battery display panel reads 14.2 v with engine running. Inverter reads 13.8 5 minutes after engine is off. All circuit breakers read 14v with engine running. All tests point to a problem with the main power lead to the fuse box.
This is on a new rig under warranty so I’m gonna let the dealership fix it because it’s a Roadtrek problem. Just wondering if anyone has any suggestions. They said they would need 1-3 weeks to get it repaired.
I could do it in a day if I was 10 years younger.

Skip426 · 06-30-2022, 09:14 AM

Ok; I'm a little confused , but that's normal at my age .

You're getting alternator voltage " everywhere " with the engine running .
Inverter panel shows 13.8 volts , 5 mins after engine shut down .

When do you get 10.2 volts at the fuse panel ???
What is the voltage AT the battery when the fuse panel has 10.2 ?

13.8 volts is a surface charge at the battery , if after an hour or so you're only seeing 10.2 volts ; I would suspect a dead cell in the battery rather than a bad connection.

Rkortan · 06-30-2022, 11:26 AM

Battery always has correct voltage. It just isn’t getting to the fuse panel. I suspect a loose cable from the reset circuit breaker probably at the back of the fuse panel.
It’s my sisters rig and under warranty. I wrote up my troubleshooting and told her to give it to the tech at the dealer. It will save them a lot of trouble.

Skip426 · 06-30-2022, 11:35 AM

Quote:

Originally Posted by Rkortan

Battery always has correct voltage. It just isn’t getting to the fuse panel. I suspect a loose cable from the reset circuit breaker probably at the back of the fuse panel.
It’s my sisters rig and under warranty. I wrote up my troubleshooting and told her to give it to the tech at the dealer. It will save them a lot of trouble.

I'd tend to agree with your diagnosis , as being the first thing to check , hope it's not the fuse panel or some other 4 month down the road part.

So the voltage at the fuse panel doesn't increase with the engine running ?

That would be odd .

Rkortan · 06-30-2022, 01:05 PM

That’s correct. The voltage at the fuse panel stays the same.

Rkortan · 07-23-2022, 09:04 AM

My sister said the dealer found that the control board for the tankless water heater was causing the voltage problem. They are now awaiting a response from Roadtrek on what to do.
I told her to ask them to bypass the water heater and let her use the rig while they wait for parts.

Rkortan · 08-13-2022, 07:42 AM

Now shes been told she can pick up her rig this coming week. Evidently there was a loose connection that caused a fuse holder to heat up and melt/ short out causing the voltage issue.

Skip426 · 08-13-2022, 12:41 PM

Quote:

Originally Posted by Rkortan

Now shes been told she can pick up her rig this coming week. Evidently there was a loose connection that caused a fuse holder to heat up and melt/ short out causing the voltage issue.

I do hope the dealer isn't just " blowing smoke " and the problem is properly fixed ; but time will tell .