Maytag 2006 owner manual Electrical System, Battery Disconnect Switch

OPERATION

The major portion of electrical power in your Airstream is 12-volt. The 12-volt current powers the fans, furnaces, water pump, and water heater ignition. The exceptions would be the air conditioner and microwave oven.

All 12-volt current comes through the battery system in the front of your trailer. The batteries are accessible in the battery box on the A-frame of your trailer. Power from the batteries goes to a set of four Type 2 thermal breakers located under the front bed and riveted to the inside skin front plate. The breakers are ties together by a brass bus bar. One breaker (30 Amp.) protects the 12-volt tow vehicle charge line coming from the 7-way cord. Another breaker (20 Amp.) feeds the trailer brakes breakaway switch located near the hitch coupler. A 50-amp breaker feeds the Battery Disconnect relay. The current leaves the relay and goes to the 12-volt distribution panel located in the converter and then to the rest of the trailer. Open the brown decorative door on the front of the converter under the dinette to access the panel and its fuses. A 12-volt layout diagram is shown later in this section.

If you replace a blown fuse and it immediately blows again, do not replace the fuse again until a qualified service technician can correct the problem.

If the replacement fuse holds for a week or more and the gap in the fusible metal is barely melted apart it usually indicates an overload condition. Reducing the number of lights or appliances used on that particular circuit at the same time could prevent any further fuse failure.

Electrical SYSTEM

BATTERY DISCONNECT SWITCH

The disconnect switch is used to separate the batteries from the 12-volt distribution panel and converter charging system.

When the switch is turned “use” (on) and the trailer is plugged into a 110-volt shoreline, the 12-volt distribution panel will receive power from the converter and the batteries will be charged through the converter charging system.

When the switch is turned to “store” (off) and the trailer is plugged into a 110-volt shoreline, the 12-volt distribution panel will still receive power from the converter, but the batteries are disconnected from the system. The batteries will not be drained with the switch in the store position. The converter will not charge the batteries with the switch in this position.

The charge in the 12-volt batteries is replenished when towing from the tow vehicle
alternator through the 7-way cord. This charge will go to the batteries no matter which	G
position the Battery Disconnect Switch is in.

G - 1