Winter is coming. Furnace issues

[Hercules]

All:
Got home today and was 43F inside! After some fiddling between HP and furnace settings, HP came on. In a few minutes the furnace kicked in and now we're up to 60. But something is amiss. T-stat says furnace. But it is NOT automatically cutting on. Just now turned it off for a few minutes then it started right up.

Winter in the mountains of Western North Carolina is no laughing matter and I need some reliability.

1. Any idea why not turning on automatically?

2. Any referrals for on-site diagnostics and repair?

A guy came out in a snow storm a few years ago and saved us with a new circuit board. Can't find his contact info anywhere.

Any help is appreciated.

[cfo111]

is your propane systems all working like stove and hot water heater?

[loyda]

You may need a new thermostat. If you have 2 units maybe switch stats and see if that works