![]() ![]() If you intend to shut then off.you will need to modify your coach. The Constant Battery Power items will be continuously fed as long as they have a complete circuit to the House Bank. It does not shut off everything that drains your batteries. The relay ONLY disconnects the distribution to the DISCONNECT items. If you locate the relay, or the Handout in your Black Bag.you will see the identification off "Constant Battery Power" vs Disconnect Battery Power". The salesman switch opens a relay behind the cord real. When reinstating.turn ON the House NEGATIVES, followed by turning ON the Inverter POS. You would start by turning OFF the Inverter Positive.then turning OFF the House NEGATIVES. IE a Heavy Duty switch to interrupt POS line to the INVERTER and a Heavy Duty switch to interrupt ALL NEG lines to the Battery Bank. If you are leaving the coach unplugged.then you either need to setup a system to disconnect the bank. If you buy new batteries.and didn't make sure the charging system is set properly.then they will suffer the same fate. ![]() But do everything possible to insure that your charger is set and working properly. ![]() If the voltage drops overnight.the batteries are more than likely shot. If you know how to get it to rebuild.and go into absorb for the required time (see manual based on size of battery bank).and you don't have any undue drain. Your charging system should allow you to trouble shoot. While that is a good place to start.I'm sure I left out something. Factors to consider, AGE of the batteries, cleanliness of contacts, water level, cycles(life use), sulphation due to leaving them at low state of charge, and not routinely getting them to a FULL charge, incorrect charge parameters.or faulty battery temperature sensor causing the unit to skew the settings incorrectly due to false reading. Poorly serviced batteries, could result in poor storage potential. If you don't see anything.then I would switch my focus from the drains.to the charging system.and batteries. If you see something that looks suspiciously y to identify the drain. ![]() Measure current passing thru these three cables. Then there is the Bi-directional Isolator Line.which goes to the Bird. On my coach.I have a Positive going to the Inverter, a Positive going to the HOUSE.those actually are directed to two catastrophic fuses mounted on the rear wall of my battery bay. If you have access to a clamp meter.(capable of measuring DC amps by clamping a loop around a wire) I would identify the different cables connected to the House battery bank. If your Chassis isn't the issue.we have to move on to what the problem is with the HOUSE. The Alternator would be able to charge the Chassis and then the House in this situation, If you are Parked.the Bird only shares the HOUSE charging system with the Chassis. The voltage must be 13.3+ for a minute before the BIRD triggers the relay on.Ĭlick to expand.The BIRD will only affect the House system if you are Driving. It is possible that the house bank is real low, like 12V and while charging the charger can't pull the voltage up to 13.3+V, the BIRD will not trigger the big relay. You should be able to read 3.4V ish on the relay line of the BIRD once it has triggered the relay on. While on shore power, if you read 13.3+ on the house bank stud and 12+ on the chassis bank stud, that would indicate to me that the relay is bad. You should read this same voltage if the coach is not on shore power nor genny. If the voltage is 13.3+ on one (you've found the house bank) and 12+ on the other, that tells me that both the BIRD and the Relay are working. Remove the wire at the BIRD and re-measure the voltage at the big relay. Look on the BIRD and find the terminal marked Relay. If you read 13.3+ on each (the same voltage), the BIRD has activated the relay and the charger is charging both banks. You should read House voltage all the time on one stud and the chassis bank on the other. To check this, use a multimeter to read from ground to each terminal on the big relay. With the coach plugged in, you would assume that both battery banks are charging. ![]()
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