my last coach and current (thor hurricane 29m) have both had issues starting the propane water heater and propane furnace, water heater worse than furnace after storage periods in between trips. My remedy is to light the gas stove top burners, usually all 3 and let burn for approx 1 minute then while stove top still burning turn on the other appliance (water heater or furnace) they light immediately and the process doesn't need repeated until after another storage.
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