I have a 2910 T 2015 year . it is in storage inside heated building Plugged in to 120 volt power. How does the batteries stay charged ? I checked yesterday the voltage was 3 volts nothing would work. Every thing is off. How do I check this out ? I removed the hot cable (red + ) to charged the batteries .
Would the converter power the lights with the batteriesdisconnected
I leave the switch to the left of steering wheel on and the solar keeps all my batteries charged all the time.
I use the secondary battery charger shown below.
@Keelhauler I think that switch is a momentary contact type on my rig. You have to hold it in to activate the 'boost'. I wonder if that is a change between your model year and mine?
You may have a bad converter. After charging the house batteries test them for 6 volts ( 12 volts in series) with a voltmeter before reconnecting the + side from the coach, then reconnect the shore power. Measure the charging voltage at the batteries. It should measure 13.0 to 13.5 volts. If you have to replace it get a Progressive Dynamics model with charge wizard.The surge protector won't detect a load from the microwave when it is off. Check that the air conditioner, refrigerator, and inverter are all OFF too and that nothing is plugged in to the AC sockets since those are the only other loads on the AC / shore power circuit. As previously discussed, leaving the rig connected to shore power can cause the oem dumb converter to overcharge and boil the house batteries. Using the house battery disconnect switch will prevent the batteries from discharging while the rig is stored. Check if the LP gas detector is still on when the battery disconnect switch is in off mode. Try turning off all DC circuit breakers while the rig is stored to eliminate the possibility of parasitic loads.Storing the rig with a disconnected main battery can cause the Ford ECM to lose the learned data used for emission control, resulting in a check engine light condition that can only be cleared by performing numerous required drive cycles.