Won't let me put in seperate set points for cooling and heating. I reset to fac setting, it used to let me have 2 settings.

The Peco TA-170 thermostat is designed to control both heating and cooling, and it appears that it may not allow for separate temperature settings for heating and cooling. However, you can adjust the set point temperature for both heating and cooling modes at the same time by following these steps:

1. Press the "SET" button to enter the programming mode.
2. Use the up and down arrow buttons to adjust the temperature set point. The display will show the current temperature set point for both heating and cooling modes.
3. When you have set the desired temperature, press the "SET" button to save the new set point.

To reset the thermostat to its factory settings, follow these steps:

1. Press and hold the "RESET" button for three seconds.
2. The display will show "RST", indicating that the thermostat is resetting.
3. After a few seconds, the display will go blank and then turn back on, indicating that the reset is complete.

Please keep in mind that resetting the thermostat to its factory settings will erase all programmed settings and return it to its default settings. You will need to reprogram the thermostat to your desired settings after the reset.

Thermostats have multiple issues when you start checking them against thermometers.

1) the built-in thermometer may not match the set temperature because one or both need calibration. Compare the built-in to an external thermometer and see if there is any adjustment to make them match. Record the setting on the thermostat and the temperature when it starts and stops -- there should be a 1-3 degree range which may be adjustable. The set point should be in the middle of the on-off temperature spread.
2) the thermostat has a heat anticipator setting which may be set poorly -- turning off the heat before it reaches the set point - the fan normally runs for 1-2 minutes after the heat source is off. The anticipator is used to stop heating before reaching the set point as there are still a lot of BTUs coming out during the fan run-down -- usually 1-2 minutes.

If it 2 degree cooler then that's fine .adjust your thermostat 2 degrees higher so you will get the temperature

Same problem...then discovered my thermostat was set to Celsius instead of Ferinheight... pressed toe temp up and temp down buttons to change..fixed...

You shouldn't be messing around inside the thermostat. You have now changed the setting on the heat anticipator.This control is used to set the heat, so the heat shuts down before and in anticipation of the heat reaching its set point so it doesn't overshoot it. This thermostat will have be to reset by a pro. I believe it would be cheaper to just buy a new digital thermostat.

Is the outdoor fan running? The fan cools the coils and compressor, therefore keeping the high pressure low enough to run. Either the fan is not working or its not spinning fast enough. Check the capacitor, or just replace it.

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

Hi,
Many t-stats will not let you go within less than 2 degrees of the heat set point....

Lower the heating set point and then you will be able to lower the cooling setpoint..

heatman101

check your airflow. grills open, filter clean etc. typically when a unit runs once and won't come back on without a reset it points to a safety switch that is kicking the unit out. By cycling power you are resetting the switch until the next trip. Many times related to lack of airflow.

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

Hello; If you add heat to the air where the set is located, you are asking for trouble. Just because it is located above the fireplace does not mean added heat. Try putting your hand on the top of the set after running for 10 minutes. Then check again every 20 minutes. If at any point the top of the set feels fairly hot, you may need to relocate set. Once relocated, do the same test. Plasma TV's run hot after an hour. Give your set a cool down period after every 2-3 hours. This will extend you sets life. If the set is not much hotter away from the fireplace after these tests, you can probably safely put it back at the fireplace. John