Furnace and water heater will not light propane

[ptraney]

2017 311 BHS. All of a sudden today neither my furnace nor hot water heater will light the propane. The stove works fine.

[Scott'n'Wendy]

Well you have propane then, so the 12vdc system is the only thing I can think of as common to both. Stove doesn't need 12vdc. Are you running just on battery power? If so you may have a low state of charge. If you are plugged in, maybe a bad converter, or tripped breaker?
Put a meter on you battery would be my first move.

[Ynot4me2]

I agree on checking the 12v side. Check that the battery disconnect didn't disconnected. Check your battery level, then related fuses to furnace and w/h.

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[ptraney]

Thank you all so very much. Everyone is so helpful. Guess the batteries were low? It is working again!

[Redapple63]

I agree with checking the 12v side since it is both the heater and water heater.

[RoJoSo]

Thank you all so very much. Everyone is so helpful. Guess the batteries were low? It is working again!

Keep an eye on your battery level. Check it with a multimeter, be sure it is charging properly.