12V issues, battery charging

[b33gsb57]

I have a 2022 Imagine 2800BH, First noticed batteries were not charging at night. I isolated each circuit the way i understand them. Have 13.66 out of Solar panels to batteries, have 13.7 from converter to batteries. At power distribution panel there is 13.66 volts available from the converter to the bus with the solar dock disconned, however on the DC bus there is only 9.9+/-. I removed the DC fuse 1 at a time with no change in DCV. However when I removed the 30A fuse for the compass point controller my voltages jumps to 13.66. So I am fairly convinced that there is some type of electrical issue there. However I have no idea what is going on in this box and GD can't help. BTW, GD, Cust Sup, tier 2, electrical, Daniel was quite helpful. Kudos there. So has anyone had this issue? Am I missing something that I just am not seeing or considering, hate to pop for a new module and not have it rectify the issue, I am no part swapper..isolate, verify, replace. Lil Help, Thanks Joe

 

[Soundsailor]

I have a 2022 Imagine 2800BH, First noticed batteries were not charging at night. I isolated each circuit the way i understand them. Have 13.66 out of Solar panels to batteries, have 13.7 from converter to batteries. At power distribution panel there is 13.66 volts available from the converter to the bus with the solar dock disconned, however on the DC bus there is only 9.9+/-. I removed the DC fuse 1 at a time with no change in DCV. However when I removed the 30A fuse for the compass point controller my voltages jumps to 13.66. So I am fairly convinced that there is some type of electrical issue there. However I have no idea what is going on in this box and GD can't help. BTW, GD, Cust Sup, tier 2, electrical, Daniel was quite helpful. Kudos there. So has anyone had this issue? Am I missing something that I just am not seeing or considering, hate to pop for a new module and not have it rectify the issue, I am no part swapper..isolate, verify, replace. Lil Help, Thanks Joe

Hey Joe, welcome to the forum. It sounds like you've done a pretty thorough investigation, I'm just going to drop the obvious one that trips up a lot of folks, do you have the battery disconnect in the correct position (can't remove the key)?

 

[b33gsb57]

Steve, (Ras?) yes Batt swt is correct. I am stuck at what does the 30A fuse on the DC bus protect / feed.
I am dropping DC to 9.9 on the bus, however is I remove the 30A fuse on trhe DC bus the voltage jumps to 13.7. what exactly does that 30A fuse protect? It is a black stripe on white but just dives under the floor with no simple way to trace. 30A must go feed something and it isn't lights. With that fuse out no slides, no refrig. lil help

Joe,
2022 Imagine 2800 BH
2017 Nissan Titan SL

 

[Soundsailor]

Don't have your coach so I don't know about the fuse. Probably best if you reach out to GD customer support with your VIN.

 

[440scout]

It could help to know how many amps is being supplied from your solar system and how many amps are being drawn from the DC devices. Its possible that even though the voltage seems ok from the solar system it may not be producing enough amps.

 

[TimtheToolMan]

Steve, (Ras?) yes Batt swt is correct. I am stuck at what does the 30A fuse on the DC bus protect / feed.
I am dropping DC to 9.9 on the bus, however is I remove the 30A fuse on trhe DC bus the voltage jumps to 13.7. what exactly does that 30A fuse protect? It is a black stripe on white but just dives under the floor with no simple way to trace. 30A must go feed something and it isn't lights. With that fuse out no slides, no refrig. lil help

Joe,
2022 Imagine 2800 BH
2017 Nissan Titan SL

What is the resistance across the fuse?

 

[ajg617]

Might be different on yours, but on our RV, the 30Amp DC fuse is for the LCI Unity Board which is part of the LCI One Control system.