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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:
Press the "SET" button to enter the programming mode.
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.
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:
Press and hold the "RESET" button for three seconds.
The display will show "RST", indicating that the thermostat is resetting.
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.
Any thermostat, it's calibrating to cut off at the end of 2nd beginning and cut in 2nd ending of temp.<br />
Ex: In heat mode, If you set @ 68 degree, it will cut off 70 degree beginning and cut in at the end of 66 degree. <br />In cool mode, if you set at 68 C degree it will cut off at the end of 66 and cut in will be at the beginning of 70 degree.<br /><br />
If it's a furnace then flame sensor might be bad .if it's a electric heat then your limit might be shutting it off .If electric then check for fan operation .
If you are talking about the difference between heating mode and cooling mode and the room setpoint, you can not change it. It comes from the factory with a 3 degree difference. In other words if you raise the heat setpoint until it is within 3 degrees of the cooling setpoint, for every degree you raise the heat setpoint the cooling will raise a degree.
About all you can do is increase the distance between the heat and cooling setpoint. To do this either lower the cooling setpoint to 3 degrees higher than the heat setpoint you want and then increase the cooling setpoint the desired setting. For example heat and cool setpoints are 67 and 70 respectively, and you want 65 and 73. Lower the cooling setpoint to 68 and then raise the cooling setpoint to 73. Now your heating will come on 3 degress lower than 68, the 65 you wanted and cooling will come on at 73. Remember, the thermostat new setpoints will turn on the cooling at 75 and turn back off at 73 and heat will turn on at 63 and turn off at 65.
You can perform the same using the heating setpoint, just have to look at it backwards. If you need to lower the difference I recommend a 8000 series thermostat. They are the most functional thermostat that Honeywell makes, be in mind they are about 3 times more expensive and many of the setting require a well trained tech to interpret and set properly.
Hope this helps.
I have a feeling your thermostat needs replacing. Check and see if there is a little screw that you can set to increase the temperature on the thermostat.
If your unit is cooling and heating ok make sure the mode your on is not an automatic mode as this makes the unit change between heating and cooling to maintain set temp select either cooling only mode or heating only mode this means once set temp is reached unit will stop until it notices a rise or drop in temp and will come on again in your set mode
You never said what type and model of thermostat you have....... If you have a digital stat You may have to lower the HEAT setting below 67 degrees if you want to set the AC to 70 degrees. If the thermostat has an Auto feature then it has to have a 3 degree differences between heating and cooling. On the newer models it does it automatically if you lower the Cooling setting it will lower the heating setting......It this doesn't help repost with more information so I can help you better....
that is how they work. ther is a 1 to 3 degree variance up or down.it probaly does not kick back until 67 or68 degrees. a two stage furnace will keep a more steady temp.
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