Thor Forums

[bevedfelker]

USE/STORE is really a poor name and a misnomer. Its purpose is to electrically connect and disconnect the house batteries. So USE = batteries connected, STORE = batteries disconnected.

Tfryman -- When shore power or the generator is providing 120 VAC, the converter IS providing AC and DC (from the converters DC rectifier) to the coach circuits to operate all the AC and DC functions in the coach -- except DC power is not going to the batteries when in STORE because the batteries are electrically disconnected.

This is why new folks get a false sense of security and often ask here on the forum, "how can the house batteries be dead when everything works in the coach?". When you operate the USE/STORE switch and you hear that "clunk" sound, that is the Coach Battery Disconnect Relay energizing and de-energizing. The USE/SRORE switch provides 12 DC to the solenoid of that relay. When that relay is open the batteries are disconnected from the converter.