Forum Discussion

Rmack1's avatar
Rmack1
Explorer
Nov 06, 2017

Furnace anticipator

I had the control board on my furnace replaced, which fixed it, but before that I tried a new thermostat.

The new one, like the old, had an adjustable anticipator. This is a little dial on the inside of the thermostat that adjusts the amps, or something. The manual said to set the thermostat anticiptor to .7 amps, which I did.

The thing is; my furnace now goes on and off several times sometimes before settling down and running. I tried adjusting the anticipator .05 amps at a time, like the manual says, to .8 and .6, but all settings seem to produce a stutter before the furnace decides to stay on.

Should I just try further settings on the anticipator?

24 Replies

  • Get this;

    I just set the anticipator to .8 and it seems to be running fine now.

    I think I was being too conservative, and didn't fully set it to .8, and .79 didn't cut it.

    Forehead slap.
  • If it's a Energy Star rated stat, that's pretty much what they do.
  • Normal setting is .8
    Furnace should run about 6 times per hour. Increasing the number reduces the runs.
    Make and model of furnace?
    Make and model of thermostat? Is it set for gas operation?
  • btw, the anticipator settings are suppose to lengthen the time the funace cycles between on and off if you increase it, and shorten the time if you dial it down.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,337 PostsLatest Activity: Nov 21, 2025