Question about Heating & Cooling
The temperature setting on the thermostat won't work correctly. The furnace tries to turn on, then just a fast it turns off. It repeats this until I turn up the temp until it's warm in the house, then I have to turn it down again, until it cools again, & it starts the same problem all over. It's a Hunter 40135 thermostat.
I once had a weird recycling problem with my furnace and I simply cut off the power to it for a few minutes, plugged it back in and the issue was fixed. I know that's not much help but worth a try if you didn't think of it.
Posted on Oct 21, 2013
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Posted on Jan 02, 2017
On the thermostat if its a manual on then pop the cover off and look for a small dial with numbers on it. Take and move it tpoi a higher number than whats it is set at. Its called a heat anticipater and is supppose to make it so that the unit does not oveshoot or under shoot like what your experiencing. If its a digital oine then you are going to have to configure the setting in the insdtallers menu.
Posted on Dec 21, 2008
The anticipator basically prolongs or reduces the time from shut down to start up, so your furnace or air conditioner isn't cycling too much , off and on. It also will anticipate that the setting you have the thermostat set at is near, and will shut thermostat/burner off early, assuming that the temperature will be reached soon, just from heat already in chamber being circulated through system. If it gets too cold before furnace turns on, adjust anticipator, if too hot when it shuts down, go the other way, but whenever you move it, just go a little at a time, until you get it where you want it.
Posted on Mar 13, 2010
Testimonial: "Thanks for the explanation about anticipators. Do they figure much in furnace problems?"
I have serviced these furnaces for 20 years and I can tell you most of these models did not have diagnostic lite on them. (although some did, especially if the control board has been replaced) The problem is most likely a bad 3 wire pilot. This will cause exactly what you describe. 2 things to consider though. 1, If you were to replace the pilot don't get a cheaper knockoff. In my experience these do not last long at all. Get the right one from a carrier dealer. It will cost more but be much more reliable. 2 What is the condition of the secondary heat exchanger? Most if not all of the sx series had issues with the secondary heat exchangers rotting out and leaking. If the furnace is out of warranty you would be much better replacing the furnace as the cost of replacing the secondary heat exchanger will probably be almost the same as a new furnace. ( those babies are EXPENSIVE!)
Posted on May 01, 2010
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