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Old 12-15-2015, 01:35 PM   #1
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IlliniCathy's Avatar
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Join Date: May 2015
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No house power on shore or battery

Picked our 2005 Executive up after 1 mo on dealer lot for service. Upon entering coach, we had no house power. unable to start generator. Coach fired up and ran no problem. Ran 50 amp cord to coach. Nothing came on in house. Charged house batteries for 2 hours and microwave lights came on. Drove coach home. Next day house batteries say 3 V. After significant charging house lights come on. So question is what is root cause? Dealer did not shut off house batteries. Did this cause batteries to completely discharge? Did that cause something that would not allow house power when plugged in to shore power? Why would Gen not start. Very confused. Any insite welcome.


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Old 12-15-2015, 02:34 PM   #2
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Sitting at dealers lot discharged the batteries. Batteries drained flat because they were not disconnected at the cable. There is always something plugged in and draining the batteries like your propane detector, inverter,TV, smoke alarms, radio. No battery power means that the generator will not start. You will need to have the batteries tested is see if they are damaged.

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Old 12-15-2015, 02:49 PM   #3
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In my experience, anytime batteries are totally drawn down (3-4 days with no charging), they are somewhat damaged... Life has been shortened...
In your case, if they are more than 5 years old, this might have destroyed them.

As suggested above, batteries should be removed from coach and load tested to see if they can still be used...
Even at a service shop I would insist on my coach being always plugged in to a minimum 15A circuits to maintain my batteries in good health.
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Old 12-15-2015, 10:16 PM   #4
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We need some additional specifics. There are three different electrical systems in your coach:
  1. The chassis 12 volt is used to start the engine, start the generator, provide running lights, power the radio, and usually operate the step.
  2. The house 12 volt system that runs off the batteries and supplies the house 12 V draws (ambient lights, slides, etc.) and provides power to the inverter for 110 V power when there is no other source of 12 V.
  3. The 110 v system that runs the appliances and provides the inverter with power to charge the batteries and supply the house 12 V demands.

Your generator not starting may be unrelated as it should start off the chassis batteries - but it may have a safety measure that if there is not a minimum voltage present on the house batteries it won't start since it doesn't think they are present. Does it crank and not start or not crank? Is it giving any codes (get the manual and it will tell you how to check)?

When you are on shore power, is your inverter charging the house batteries? If it is, you are getting 110 power? On 110 V power the 110 devices and outlets should be powered.

In the absence of some other details, you may need to read your inverter manual closely - if the house batteries are pooched it may be refusing to charge them.
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battery, power

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