The T87 is a pretty reliable stat. If you move the anticipator one end to
the other with no change, and the stat is mounted level, its either a bad
stat or mounted to close to a heat source
"Scott" wrote in message
om...
I'm having a problem with my furnace short cycling.

I have a Honeywell T87F thermostat. I have the heat anticipator maxed
out at
1.2 and it still short cycles. The thermostats on my other zones
don't have this problem.

How do I tell if the thermostat has gone bad and needs to be replaced?

Scott