Thor Forums

[Beau388]

Originally Posted by vegasruv24.1

. shut off the battery switch,... coach is a 2019 thor hurricain 29m... coach and chassis batterys dead......so I plugged it in to shore power...lights work... monitor says 13.6 on coach,... and 1.7 on chassis..so I try to start the engine... no power,... so left it plugged in for a couple hrs... come back... still 1.7 volts at chassis... complete dead.... un plug and coach ballerys have 2.0 volts... no power any where...with it plugged in... no start power to gen either...
WOW!!!!!!!!!!!!!

When you shut-off the master power (use/store) switch, you disconnected the batteries (both house and chassis) from the charger. When the coach is on shore power, the charger will power all the 12 volts circuits on the coach (assuming the 15 amp circuit breaker in the power center is on).


More explanation - there is a latching relay between charger and the house battery bank. The battery switch (master power -U/S) controls this relay. If the relay is switched on when on shore or generator power, the converter will always charge the house batteries. As soon as the house batteries are about 80% charged, the BIRD (or battery interconnect) will close and the converter will then begin to charge the chassis battery. It is the BIRD that connects the battery banks when you activate the emergency start switch.