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Old 04-11-2019, 08:46 AM   #1
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Brand: Thor Motor Coach
Model: ACE 30.1
State: Ohio
Posts: 168
THOR #14952
Radio & cameras only work when electric plugged in

hello, hope someone has a suggestion for this problem. We have a Thor ACE 30.1. If the MH is plugged in the outside camera views show up, including the rear when backing up, side views when we turn on the turn signals. As soon as we unplug the electric the radio won't work at all, so there are no camera views when just the engine is running. Hope that explains it... Any suggestions of what to check? We are supposed to take possession tomorrow and discovered the problem today. Greatly appreciate any ideas, thanks!!
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Old 04-11-2019, 09:28 AM   #2
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Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 434
THOR #13869
The radio's power comes from the coach batteries with use switch in the "on" position, or in use.
The camera uses the radio's display screen.
Usually the first switch on the left, when turned on, you will hear a clunk, or clack noise from the fuse/breaker panel area.
It has 2 choices: Use, or Store, (connect, or disconnect coach batteries).

I believe, when plugged in, the converter automatically engages, supplying the 12vac, which radio needs.
When unplugged, converter turns off as it needs 120vac to create the 12vdc.
Thus, you need to engage the coach battery supply of 12vdc, via the use switch.

You also need the use switch in the on position, while plugged into shore power, to allow coach battery charging via the converter.
Chassis (engine) battery is a separate system.

Try that, let us know.
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You could still maybe see me rolling down the highway, on my motorcycle, pulling a trailer with camp gear, smiling, beard in braids...
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Old 04-11-2019, 09:31 AM   #3
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Brand: Thor Motor Coach
Model: ACE 30.1
State: Ohio
Posts: 168
THOR #14952
Thanks, I will try that tomorrow @ 10scDust. Ha, actually later today since it is now 5:31am
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Old 04-11-2019, 09:41 AM   #4
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Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 434
THOR #13869
It should be okay, I did the same thing once, and you will laugh about it later...
I call it my blonde moment, LOL

It is set up for radio power off the coach batteries, so when using the radio while camping, puts no draw on the chassis battery, and maybe engine starting problem.
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At my young age, lol...
You could still maybe see me rolling down the highway, on my motorcycle, pulling a trailer with camp gear, smiling, beard in braids...
Feeling The Wind! (FTW)
Rusty
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Old 04-24-2019, 02:43 PM   #5
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Brand: Thor Motor Coach
Model: ACE 30.4
State: Tennessee
Posts: 1
THOR #14673
Hey everyone, another newbie here with the same issue only I think my disconnect may be stuck in the store position. My house batteries are reading in the 12 volt range. As long as I'm using shore power all is well. The minute I cut power I lose lights, radio etc. Does anyone have any suggestions to troubleshoot this further? Thanks in advance for any assistance.
Vince
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Old 04-24-2019, 03:33 PM   #6
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Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 1,470
THOR #6411
The store/use (master power) relay is notorious for failing . It is a 55 amp latching relay and is located in a corner under the bed, just beside the power center. The relay is controlled by the switch but has a 5 amp fuse attached. be sure to check the fuse before you assume the relay is bad. This relay controls power from the house batteries to the 12 volt fuse panel in the power center.
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2016 Hurricane 31S
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Old 04-24-2019, 11:23 PM   #7
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Brand: Thor Motor Coach
Model: A.C.E. 30.1
State: Louisiana
Posts: 1
THOR #998
Quote:
Originally Posted by viwalker View Post
Hey everyone, another newbie here with the same issue only I think my disconnect may be stuck in the store position. My house batteries are reading in the 12 volt range. As long as I'm using shore power all is well. The minute I cut power I lose lights, radio etc. Does anyone have any suggestions to troubleshoot this further? Thanks in advance for any assistance.
Vince
I just had a similar problem and I fixed mine by locating the 50 manual reset breaker in the Battery Control Box. I have a TH-1020 BCC on my 2015 ACE. It had tripped I think when the battery was replaced.
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