Igniter reliability at high altitude in a 2018 Micro Minnie

[KGs2108DS]

Hello: headed out for lengthy boondocking. Rig is 8 years old. Running off battery, propane, and generator. Do I need to be concerned about igniters due to age of rig? Does altitude ~10k’ affect igniter operation. Knew a couple last fall who had to leave back to civilization due to faulty furnace igniter. Thank you!

 

[Eagle5]

Yes, at 10,000 feet the flame may not ignite or might be too fuel rich. The igniters themselves should be OK, but still, anything above 5,000 feet altitude is iffy.
Eagle5

 

[KGs2108DS]

Hum...I rarely camp below 5k'. So, at higher altitudes what are my options for insuring fridge/furnace/hot water heater operations? Over the years thus far, I've had no problems at between 9k'-10k' camping. Would starting the generator and running on 110VAC be helpful if the igniter is not lighting the furnace on battery power? Thank you!

 

[Morich]

I don't thinkof this as an igniter question as the spark will not be changed by altitude. what can become a problem is the propane gas flow may be far different. The igniter is probably going to spark fine but if the gas air mix is too far out of range it may not light.
If concerned about the igniter, it might be good to take a loo0ok at the spark before the trip. I have never had an igniter problem but am told the points where it sparks can get corroded or soot form to keep the spark from being as good as it might.
Looking at the furnace as possibly the main concern, there is likely a "sleeve" of metal held on the tube where the propane flows. That may have a small screw hoding the adjustment? If you get down low, that sleeve can be moved forward or back to change the air and then if you go too high for a good flame it can be moved the other way. I'm not a mountain fan, so never had to adjust but I would suggest taking a look at that before going as being prepped works better when you are not frozen.
What you want to see is not highly critical but does change the propane use a bit if we get the best air/fuel mix. You want to see a steady bright blue flame for the main part of the fire and then expect a bit of organge color at the tip. After you get what you fel is the best combo for low and possibly it works for high also, I tend to like to mark that point with maybe alead pencil mark? But there is no firm setting as the gas flow out of the propane tank changes with a big change in altitude!