Battery Charging Systems Installed by Thor on Vegas/Axis
Originally Posted by Jesse Toler
Hey guys somewhat of a newbee here so excuse my ignorance. I have a 2015 vegas and this weekend I was boondocking for a few days. Generator running the whole time. My wife noticed the night shade wouldn't go up. So I tried to start the engine and it didn't start AND what I found weird was it shut off the generator. At that point I had no power anywhere. The chassis battery was of course dead but then it was like the house was in store mode and the generator didn't want to start. I actually had another generator I started up and plugged that into the shore power which got me some power to the house. This helped some things but not everything. I tried the emergency start switch with no luck. Long story short my buddy gave me a jump and I got home without issue.
With this said I'm made of questions.
-does this sound like I have a lot of dead batteries?
-do you think I have a emergency start solenoid issue?
-why in the heck would starting the engine kill the generator?
-where is the emergency start solenoid located?
The coach is equipped with either a Battery Control Center
(BCC) or a Bi-Directional Isolator Relay Delay (BIRD) and
Trombetta (isolation relay) that performs two important
functions. They provide a method of charging the coach
battery from the engine alternator and charges the chassis
battery from the converter when the coach is plugged into
shore power. When neither battery is being charged, the
batteries are isolated from each other to prevent the loads of
one battery from inadvertently discharging the other battery.
The BCC (if so configured) is in the storage compartment
under the driverís seat. It will probably be a RV Custom
Products model TH-1020 see Appendix 5).
If not equipped with a BCC there will be a Thor model
0300224 Fuse Box under the driverís seat with the BIRD
housed in a plastic enclosure suitable for mounting under the
hood, out of direct water spray. It operates in combination
with a continuous duty solenoid to connect the two batteries
at the proper times for charging (see Appendix 4).
From Ed Felker's manual