Ok, this is going to be a little bit of a long thread just to warn you!
We went camping with my son and his wife and her folks up in New Hampshire this past week and had a great time. We have an older 1998 Georgia Boy motor home that as been updated. My son has a 29ft travel trailer and her folks have a 2017 Coachman Mirada.
So we are out camping and the in-laws complained that they had to run the generator to open the door steps. (They thought this was normal) In addition they had a problem with the drop down bunk. They had purchased it from General RV and had brought it back several times as the bunk did not come down correctly. Now in fairness they did not complain about the DC power issue as they thought it was normal to have to run the generator to power the steps and the slide outs.
After looking at it I determined that someone at the factory had wired the two 6 volt batteries in series with negative being connected to negative so that they ended up with the charger attempting to charge batteries that were hooked up totally wrong! Now we are in the back woods of New Hampshire so we went to a local auto parts store and purchased two marine 12v batteries and put them in parallel. After that everything worked correctly! I was amazed that the 12V inverter/converteer had not blown up!
So after we replaced the batteries with two 12V units (the local auto store did not have two 6V batteries) we were able to get the unit functioning like it was supposed to!
Now on to the bunk! They had brought the unit in several times on the bunk issue and the local "repair dealer" said all they had to do was take the panel loose and push the reset button!
I simply downloaded the installation manual for the bunk and found that what they had to do was set the stops for the bunk and NOT push the reset button (holding the reset button for more than 3 seconds clears the stops!).
After following the proper programming session the bunk now operates correctly.
What I am amazed at is the lack of "knowledge" that the dealer had when it came to helping a client with a unit that was sold to them. Now in fairness they did not tell them about the battery issue as they thought that was normal but the bunk issue was something else.
Bottom line is I was able to get them going
and now the motor home works as it should!
One last thing I found was that they were having problems with only one of the three burners igniting so all I had to do was bend the wire away from the steel base on the igniters to make them all work.
They shouldn't have had to go through this but I have to admit it was fun trouble shooting the issue!