208 HiLO water heater will not come on. No directions. Says automatic. Don't know what to do. Please help me.

Howard, welcome to the forum. I don't know what you mean when you say your trailer is a "208". Is it a 2008 model year trailer? Is the water heater an Atwood brand? Does it work not work at all, or does it possibly heat on Propane, or shore power only? Have you checked the fuse to that circuit?

If it's an Atwood, you should be able to locate an owners manual either here, or by using an internet search.

- Jack

__________________
Hi-Lo 1707T - Tire Minder TPMS on Tow Vehicle and Trailer, 300W Solar Battery Charger, Equal-i-zer WDH, Progressive Dynamics Converter, Fan-Tastic Fan, LiFePO4 battery 12V DC Electrical System
2014 F150 Platinum 4x4 3.5L EcoBoost SCrew

What Jack said.

__________________
My Great Wife Joyce
2018 Jayco Jay Flight 21QB
Formerly owned 1705T and 2310H
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU