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Old 07-02-2020, 07:38 PM   #1
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Minimum Voltage for Dometic Power Awning

I have an issue with my Dometic 9100 power awning. It will only operate on shore power. When I try to power it with a battery registering 12.6 v or greater it may operate. When the trailer is plugged in to house current and the batteries are charging to 13.6 v the awning will operate. It sometimes hesitates and I need to rock the switch a bit. I changed out the switch and checked all connections but the problem persists. My suspicions is that the motor is on the way out. At my last annual 'warranty forever' inspection the technician said the current draw for the motor is within spec. and the mfg will not replace. Since this is my first RV, is it normal that the awning would only work reliably on shore power?
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Old 07-02-2020, 08:09 PM   #2
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no, it's not. how are you measuring the voltage on your batteries?
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Old 07-02-2020, 09:38 PM   #3
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No.....up at the roller in the front arm there's, a plug for the motor,,,check voltage there....
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Old 07-03-2020, 06:08 PM   #4
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using a voltage meter.
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Old 07-03-2020, 06:14 PM   #5
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Yesterday I disconnected from shore power, the battery settled down to 12.8 volts and tried to extend the awning. It moved after rocking the switch. Once partially extended, I bypassed the wiring and connected directly to the battery and the motor moved as expected. I think that eliminated the motor as the problem. I cleaned the rocker switch. Next I'll trace the wiring through the awning arms to see if something is frayed and then redo the connections to the switch. Glad I'm retired and have the time to play with this stuff.
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Old 07-03-2020, 06:16 PM   #6
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Check the amp draw at the motor on the right side.....it may have water intrusion causing it to pull more load.

Had to take mine apart and clean it out and spray wd 40. Works like new.
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