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Battery Combiner Not Working?

Question:

Last week Jeff answered my questions via video about installing an ACR - thank you!  Now I have a new question. My house battery was discharged down to 11.40 volts after I tested a new bilge pump. The battery selector in #1 position = start battery to start engine and house battery for all else. After an hour of trolling at 5 mph my house was only at 12.4 v. start battery = 14.I1 I switched to combined and shortly thereafter my house battery was fully charged. My ACR indicator on the dash didn't light up ever. What do think is happening?  - Steven

Answer:

Based on your details, it looks like your battery combiner is not working, as it should have turned on around 13.4 volts. Make sure you have a good ground connection on the correct post of the ACR.

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