Broken Atwood RV Water Heater (Troubleshooting and Repair)

WARNING - use disconnect switch to shut off battery before you test any continuity. Or check voltage threw fuse to ground using DC volts setting.
Our water heater would not cycle on after about 5 times of using it. This is a Atwood 6 Gallon Propane only RV water heater. Model number G6A-8E. My method of troubleshooting is to test the cheapest items first, fuses, breakers and connections and then move onto more expensive items for testing like the circuit board.
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Item model number 93865
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