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Old 10-15-2020, 06:34 PM   #1
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2007 20' Safari SE
Durango , Colorado
Join Date: Apr 2009
Posts: 15
AC power working but no DC power

I have a 2007 Safari SE. Problem is no DC power. When connected to shore power, everything works; when connected to shore power, the converter DOES NOT recharge the batteries (the battery disconnect switch is in the Use mode) This is what I have done so far:

1. Replaced the converter. Reviewed the Parallax converter trouble shooting algorithm and new converter works. In fact, that might not have been the problem to begin with but I didn't have the algorithm initially.
2. Replaced 5 amp fuses on battery disconnect solenoid (located under the bed!)
3. Installed 2 new AGM batteries (currently charged to 12.4v)
4. Checked and cleaned the ground attached to the frame.
5. Checked the solenoid to the battery disconnect switch. When using a volt meter on terminals (one at a time with a ground) volt meter reads 0 volts on each side.

I forgot to add -- when connected to the TV, the batteries charge.

At this point, I'm at a loss. Someone mentioned there may be a circuit breaker between the batteries and the solenoid, but if there is, I can't find it.

Any ideas??
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Old 10-15-2020, 07:27 PM   #2
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1964 22' Safari
modesto , California
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Perhaps a bad switch. Check for voltage at both sides of the battery disconnect switch itself when it's in use. Or perhaps there is a second switch in the circuit?

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Old 10-15-2020, 08:54 PM   #3
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2018 25' International
Slidell , Louisiana
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From your description, I would concur with the suggestion from the person named someone. There are breakers on the battery bus bar which is between the Use relay and the battery. Sounds like one of those are tripped or bad.
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Old 10-15-2020, 09:27 PM   #4
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2017 30' International
Broomfield , Colorado
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AC power working but no DC power

Sure sounds like the Battery disconnect solenoid is bad. Do you hear the typical loud “click/clunk” when you activate / deactivate via the switch with the red light?
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Old 10-16-2020, 12:24 AM   #5
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If there is no voltage on either side of the switch in USE mode with shore power connected the problem is between the switch and the trailer power distribution panel, or on the power distribution panel. With shore power on there should be 12 volts on the trailer side of the switch regardless of the quality of the switch or batteries.
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Old 10-16-2020, 08:37 AM   #6
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2007 20' Safari SE
Durango , Colorado
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Thanks for the quick responses.

Wulfraat - I do hear the usual "click" when I put the disconnect switch in Use or Store. When plugged into shore power, the switch light is bright, when on DC power, I cannot see it.

Bayoubiker -where can I locate in the trailer the battery bus bar? What does it look like?

Al and Missy -- I can't remember if I tested the solenoid in plugged into shore power. I will try that later today and post the results.
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Old 10-16-2020, 10:41 AM   #7
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2018 25' International
Slidell , Louisiana
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Follow the Battery and trailer cables into the trailer. The Inverter cables may go a different direction, ignore those. The bus bar will generally be very close to the entry point. If they are not there, they will be somewhere between that point and the location of the power center. Sorry I am not familiar with your trailer's layout.
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Old 10-16-2020, 11:06 AM   #8
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2007 19' Bambi
EUGENE , OR
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AC power working but no DC power

I'm guessing as others have stated focus on the solenoid. Check streetside wire connections on the solenoid. I had a loose wire connection there on my 07 with the same symptoms. If you hear the audible click, that was the issue.

Good luck!
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Old 10-16-2020, 11:41 AM   #9
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2018 33' Classic
Weatherford , Texas
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Reset all AC Circuit Panel switches and also check your 12V fuse panel for anything awry.
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Old 10-16-2020, 12:52 PM   #10
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Quote:
Originally Posted by jamulian View Post
Thanks for the quick responses.

Wulfraat - I do hear the usual "click" when I put the disconnect switch in Use or Store. When plugged into shore power, the switch light is bright, when on DC power, I cannot see it.

Bayoubiker -where can I locate in the trailer the battery bus bar? What does it look like?

Al and Missy -- I can't remember if I tested the solenoid in plugged into shore power. I will try that later today and post the results.

You should see something on the battery side as well. Measure the voltage at a battery. Then measure the voltage on the battery side of the solenoid to the trailer ground buss. They should be the same. If not, measure from the solenoid to the battery negative post. If you read voltage to the battery post and not the ground buss, the batteries have become disconnected from the ground buss. If you don't read voltage to the battery ground post, the positive cable is not connected to the solenoid. Could be a cabling issue or a fuse/circuit breaker issue.
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Old 10-16-2020, 01:33 PM   #11
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Walkerton , Virginia
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When this happened to me in my 2007 Safari, it was due to a loose connection on the 12v bus. Feeling around, I felt a hot nut which then I tightened and solved my problem.

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Old 10-19-2020, 05:27 PM   #12
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1999 28' Excella
Lake Mary , Florida
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When plugged into shore power, an inverter (read battery charger) runs off the 115V shore power and SHOULD provide a 12V output to charge the battery.
Since your 12V lights work, and the TV charges the 12V batteries, the problem is obviously with the battery charger. Check that it has 115V AC supply and check the output. Could be tripped AC breaker, or improper wiring or dead battery charger
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Old 10-19-2020, 06:31 PM   #13
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2006 23' Safari SE
Lexington , Kentucky
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Quote:
Originally Posted by suncoasteng View Post
When plugged into shore power, an inverter (read battery charger) runs off the 115V shore power and SHOULD provide a 12V output to charge the battery.
Since your 12V lights work, and the TV charges the 12V batteries, the problem is obviously with the battery charger. Check that it has 115V AC supply and check the output. Could be tripped AC breaker, or improper wiring or dead battery charger
You mean "converter". The inverter converts 12 VDC to 115 AC.
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