Originally Posted by mrsportys
We noticed in our 2014 35k bounder that the awning comes in ( we understand that if the batteries are low the awning will automatically come in, batteries showed 12.25) I installed two 6v Trojan batteries new last year so I’ll assume their good ( also appropriate level of water in batteries checked)
However, when traveling the batteries recharge. While stopped we’re on usually 50amp service. How can there be a drain on the batteries??
OR, am I supposed to cut off the battery switch while stopped?
Thanks in advance
There are of course two sets of batteries, house and chassis. The electric awning is involved, so house batteries are the issue.
Two Trojan 6 volt batteries in series showing 12.25 volts static is less than 50% discharged. I would not expect the awning to automatically retract at that voltage.
When batteries check 12.25 and are under load, they could be at an even higher level of charge. Voltage drops dramatically as 12 volt load increases. It returns to a higher voltage when the load is reduced.
If shore power is connected, 12.25 means no charging is taking place.
Setting the battery disconnect to "off" would disconnect shore power charging. So, don't turn it off.
Assuming shore power is connected, you need to find the point in the system that is interrupting charging. Charging voltage on a battery bank that has been on charge for a while should be above 13 volts.
Complicated RV systems have lots of points that could cause the problem.
Does your RV have a main 12 on off switch near the entry door? Sometimes it is called a Salesmen Switch. Charging will not usually occur when this switch is off. However, many 12 volt appliances such as lights would not work either. The awning may retract as well.
Does your RV have a switch or breaker for the Inverter/Charger. If the charger is off, of course it will not charge.
There may be a fuse on the 12 volt side of the inverter/charger that is blown.
Automatic energy management systems have various controls that could turn charging off. Malfunctioning relays in the systems often cause this problem.
Use your multimeter to track down the culprit.
Output from the inverter/charger 12 volt side should be 13.6 volts when shore power is connected. If not you are narrowing down where the issue is.
If charger output is above 13 volts, circuit diagrams for the energy management system and TT would be helpful to continue troubleshooting.