I have a white-rodgers type #1F86-241 thermostat. Not sure if my problem is thermostat or not but this is what I have. currently have two zones first floor and second floor. Second floor is problem. I set the theromostat for heat at 69 degrees. When temp is reached thermostat makes a clicking noise which I believe means the thermostat turned off but blower on air handler keeps running, heat keeps coming and temp keeps climbing until the handler is manually turned off. Does this sound like a therostat problem?

If your White-Rodgers 1f86-244 thermostat still shows "battery" after replacing the batteries, it is possible that the thermostat is not detecting the new batteries or that the batteries are not properly installed. Here are some steps you can try to fix this problem:

1. Check the battery installation: Make sure that the batteries are installed correctly and that they are making good contact with the terminals. You may need to remove the batteries and then reinstall them to make sure they are seated properly.
2. Check the battery type: Make sure that you are using the correct type of batteries for your thermostat. The White-Rodgers 1f86-244 thermostat requires two AA batteries, so make sure you are using AA batteries and not some other type.
3. Reset the thermostat: If the battery installation and type are correct, you may need to reset the thermostat to clear any errors or issues that may be causing the "battery" message to appear. To reset the thermostat, remove the batteries and then press and hold the "Set" button while reinserting the batteries. This will reset the thermostat to its factory default settings.

If these steps do not fix the problem, it is possible that the thermostat is faulty and needs to be replaced. You can contact White-Rodgers customer support for assistance with replacing your thermostat.

where do the wires currently land?

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

The White-Rogers 1F78 thermostat is a single stage 5/2 day programmable thermostat. Home Depot has the manuals for one model of this thermostat, 1F78-151, on the product page: https://www.homedepot.com/p/White-Rodgers-Single-Stage-Digital-5-2-Day-Programmable-Thermostat-1F78-151/202771121 . The wiring diagrams are in the Installation manual. The direct link to this manual is https://www.homedepot.com/catalog/pdfimages/f9/f955280d-67a2-4502-bb94-4975cd857c0b.pdf . Emerson Climate also has the wiring diagram here: http://www.emersonclimate.com/Documents/White-Rodgers/instruction_sheets/0037-6615.pdf .

If you have a different White-Rodgers 1F78 thermostat, check for the manual at Emerson Climate by starting at http://climate.emerson.com/en-us/products/thermostats/thermostat-manuals . Click on the Enter Model Number button and start typing in the model in the search box. I found a number of models with 1F78 listed. After selecting a specific model, I found a link to the installation guide on the left side of the page, below the search box. (Note: the manual link was above the Suggested Replacement header for the models that I checked.)

I hope this helps.

Cindy Wells

Next valve you sweat in, make sure you remove the valve stem, or use heat dissipation paste to not get the valve too hot.

Thank you for your interest with Emerson White Rodgers. My Name is Joselito Laxamana from technical department. Make sure to connect a thermostat that will power open and powered closed the zone valve. I pretty sure that the two wire thermostat that your going to connect will not be compatible. To better assist you with this further contact us directly at 18002842925.

You have two wires that are wired up backwards........John

please call the homeowner tech line at 18002842925.
or check the TYPE NUMBER of the thermostat usually it starts with 1FXX-XXX. When you have that handy visit the website of White- Rodgers, just put the type number on the search cross reference box it will lead you the way to download the instruction manual online.

I have only seen one Honeywell thermostat that would work with a 3-wire heating system.

I would replace it with a White-Rodgers 1F80-0471. They are about $100, but they are a good thermostat, and they work well with the 3-wire zone valves.

Most other thermostats have the "Y" terminal that you need, but do not control the zone valve correctly.

Helping Hands Services
- Fairbanks, Alaska -

This problem has to be in the way the valve was wired. Wrong zone valve-Normally open instead of normally closed-power interuption causing valve to open. Faulty T-stat/ Most likely wired incorrectly.

It is technically possible use a 2-wire thermostat with a 3-wire zone valve, but you need a single pole, double throw relay like a fan control relay with one normally open switch and one normally closed switch. 2-wire thermostats only have one switch that is normally open. 3-wire thermostats have two switches......one switch that is normally open, and one switch that is normally closed. The fan relay lets the 2-wire thermostat simulate a 3-wire thermostat. It's possible, but usually it's easier to just get a 3-wire thermosts.