Leaderboard

Gosh....I hate to say I have no clue....but I don't. I'm really surprised that your provider doesn't offer 24 hour / 7 day service or at the very least a back up tank or 2 for power outages and emergencies. The only advice I can offer is what I'd offer for any device. Check the obvious (ie power, internal fuses, filters, etc) which I'm sure you've already done. If your insurance or your wallet can pay for tanks, that's what I'd look at going forward. Malfunctions with those are easier to deal with and as a bonus you get 100% O2.