You are making progress. One thing about a used RV - you will learn a lot that 1st year then it will be easy.
I assume you verified there is water in the HW heater tank and it is not in bypass. This is important to verify. It is good you get the light indications.
Listen to see if you hear clicking when you turn the HW heater on. If so, that would be the ignition spark. You can open up the outside panel to the HW heater and listen while the DW pushes the HW button. If there is clicking but no whoosh = lighting, follow the gas line back - mine has a gas shutoff valve in the rear wheel well. If no clicking, see if there is an on/off switch in the outside HW heater area. It might be a small black rocker switch back in the corner.
Side note: While you are there – identify the 1” bolt toward the bottom of the HW heater – that is the anode (zinc I think). If you want to drain the HW heater for winter, put the valves in bypass and remove this anode to drain the water out. Also if the hot water smells/tastes real metallic, check the anode for excessive corrosion and replace it if needed – Home Depot might have the part.
If you get to the manual Troubleshooting, most HW heaters have a schematic glued to the HW heater. Mine is under the bathroom sink and I could not read it, so I used a digital camera to photograph the schematic and I read the photo on my laptop. It also has the model info to go on-line for troubleshooting info.
There are a couple thermestors (they open when the set temperature is reached to shut off the heat prior to overheating). If one of these is bad it won’t light. You should read a direct short across these (open = no heat).
When you get it figured out, take a long shower - you earned it.
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Tom and Amy from Northern Virginia.
2000 Allegro 454/Workhorse P32/TST/Crossfire
Life is a DIY project, so own less and live more
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