Everything works until I....
unplug the coach from shore power. Batteries are fully charged, had them load tested too. Battery disconnect switch by the stairs works when unit is plugged in to shore power. Switches all power off w...
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What I do is measure across the battery terminals with a VOLTMETER. If the battery is full charged it should read around 12.6-7VDC.
Then go connect to Shore Power and your VOLTMETER should now read 13.6VDC or whatever mode the smart charger is in. This tells you the battery is connected and all the fuses between the battery and the 12VDC Distribution Panel is good. Of course everything should be working now too... Most everything runs off the 120VAC circuit breakers and 12VDC ATC Fuses located in the Power Distribution Panel.
Another good test is just turn on the ceilings lights. They run off of 12VDC and if they are burning without shore power connected then your battery is feeding the 12VDC Distribution Center ok. When you turn on shore power with the ceiling lights on they should get alittle brighter perhaps...
I'd turn off shore power and start tracing from the battery terminals and see where you lose the 12.6-7VDC reading.
Most often it is BATTERY DISCONNECT Switch opened somewhere... Could even be a bad terminal connection that needs cleaned up..
Here is a typical 30-AMP Power Configuration Diagram of all the things that needs power just to give you an idea what feeds what.....
Roy Ken
Then go connect to Shore Power and your VOLTMETER should now read 13.6VDC or whatever mode the smart charger is in. This tells you the battery is connected and all the fuses between the battery and the 12VDC Distribution Panel is good. Of course everything should be working now too... Most everything runs off the 120VAC circuit breakers and 12VDC ATC Fuses located in the Power Distribution Panel.
Another good test is just turn on the ceilings lights. They run off of 12VDC and if they are burning without shore power connected then your battery is feeding the 12VDC Distribution Center ok. When you turn on shore power with the ceiling lights on they should get alittle brighter perhaps...
I'd turn off shore power and start tracing from the battery terminals and see where you lose the 12.6-7VDC reading.
Most often it is BATTERY DISCONNECT Switch opened somewhere... Could even be a bad terminal connection that needs cleaned up..
Here is a typical 30-AMP Power Configuration Diagram of all the things that needs power just to give you an idea what feeds what.....
Roy Ken
