I'm so sorry. Is there anyone who can help you with the incubator while you are gone?
Hopefully since the temp was so low the eggs haven't started growing yet, especially if you don't see anything when you candle. Look really, really hard. How long will you be gone? A day or two?
If you will only be gone a few days, and you don't see any development at all yet, maybe you can just unplug the incubator until you get back, then plug it back in when you get home. It's not the best solution, but it may be the only one you have.
Taking a wild guess on the thermometer, but if it's a Braun Thermoscan 5, "Lo" means under 34C. That temperature does not support proper embryonic development. Your call on whether to get the temp up now and stabilized before you go, or unplug until you get back. Trying to incubate at a "close" temp of 99 or too high over 102 would be worse than just unplugging for a couple of days.