Quote:
Originally Posted by Beau388
Sorry to disagree but the purpose of the Trombetta relay and circuit module is to allow the batteries to interconnect. This is done by the emergency start switch or by the Trombetta control module. The module compaires the voltages between the chassis battery and house battery. If one battery is below 12.6 volts and the other is above 13.1 volts, after 2.5 minutes the batteries are connected by the relay. This allows the engine alternator to charge the house battery and the charger to charge the chassis battery. Newer coaches have a BIM instead of a Trombetta but it functions the same. Since the store/use switch disconnects the house batteries from the charger, neither the house and chassis battery would be charged if the switch is in the store position. Conversely if the store/use switch is in the use position, both the chassis and house battery will be charged by the charger.
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Sorry back! It did NOT charge the chassis battery on our 2016 Axis which many of the other Axis owners confirmed. As we have said, check it out with a multimeter to know how it is actually working.
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