Nice choice of motorhome. Same make, model, year and color as mine.
There were three issues I corrected on mine that were common on the 2000 Alpines. You may want to check to see if they exist on yours.
1. The hot water heater was plumbed backwards. The cold water came in on the top of the tank and the hot water came out the bottom. The symptoms were sediment coming out the faucets. I swapped the hot and cold lines next to the water heater. The fix didn't require any tools. Remove the drawers to get access to the water heater. Run hot water and feel if the top or bottom pipe gets hot. If the top gets hot you are good to go.
2. The wires were crossed that detected the charge of the house and chassis batteries. The symptom was constantly needing to refill the the house batteries with water. There is a small black box next to the inverter. The two small wires running from it to the batteries were the ones reversed.
3. Replace the ground fuse. Back by the air filter there is a fuse marked ground. The replacement for the fuse I received from Western RV was just a solid piece of metal. I took out the fuse and replaced it with the solid piece. As I recall if the fuse were to blow while you are driving the engine will stop and also your backup electric braking system will not function.
4. Check the wire connections to the 120v fuses. Tighten the screws. My symptom was a breaker would pop when I ran the rear A/C and the electric water heater at the same time. Turns out the screw on the breaker connection was not tight.
Another tip to pass on is the generator fuel line is mounted on the side of the fuel tank. If I'm driving on a hot day with the generator running and both A/C's the generator will run out of fuel after traveling about 400 miles.
And finally, don't run the dash air conditioning until the engine is up to its normal operating temperature. Turning on the dash air doesn't cause the radiator fan to run.
All the above items I learned about on this forum.
Enjoy your motorhome.
Tom & Laurel
2000 Alpine Coach Limited 36FDS