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Wont allow me to set thermostat below 73 degrees?

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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....

Posted on Mar 28, 2011

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My Carrier thermostat will not allow the temp setting to go below 73 when in air conditioner mode. It is a model TC-NHP-01 non programmable. Can that bottom temperature setting be adjusted?


I'm sure. You must locate a manual and enter the settings menu. There you will find options for maximum heat and minimum cooling adjustments. Good Luck.

Mar 27, 2017 | Carrier Heating & Cooling

1 Answer

Am I able to adjust the 'hysteresis' of my digital thermostat?


Some thermostats allow you to change the differential value - that is how far below the heating (or above the cooling) set point before calling for heat (or cooling in the case of air conditioning). The built in 1 degree differential setting provides the most even temperature in the space at the expense of more frequent furnace firing and stopping. Many people prefer this mode as opposed to allowing wider swings in temperature for less frequent furnace firing and stopping. If you wish to change this setting, you'll need to replace the thermostat as it is not user adjustable in this model.

Nov 02, 2015 | Honeywell RTH6350D1000 5/2Day Prog...

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How do i adjust AC temperature variance on a Honeywell TH5220D1003 thermostat


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.

Aug 24, 2014 | Honeywell Th5220d1003 Non-programmable...

1 Answer

I have a white rodgers thermostat wall unit and i cant get the air conditioner to work properly it wont go above 32 and it says it 32 in the house but its 100 and i live three flights so you know heat ...


Your thermostat is set for Celsius and 32 in Celsius is 90 Fahrenheit. Set it to 22 degrees and that should get you to about 73 degrees Fahrenheit. The t-stat is set for Celsius or Fahrenheit on the back of the unit, there should be a small switch that reads C and F, set it for F and you are good to go.

Jun 18, 2011 | Heating & Cooling

1 Answer

My thermostat is set to 73 degrees when i get home at six it is set at 75 during the day when im not home the past couple of days it wont get to 73 it actually goes up to 76 77 it is working cool is on why...


may need charged a out of adjustment can cost lots is it old unit is outdoor temp. very hot may have trouble catching up to setpoint.on a 95 degree day good luck.

Jul 07, 2010 | Honeywell Electronic Programmable...

2 Answers

AC Thermostat is set to 78 but wont cool past 79 or 80


If your unit is running 24/7 you are either low on charge or the unit is to small for your house.
A 20° temperature difference is about normal for the room air vs the air coming out of the ducts, but the room air and the leaving air should keep getting colder and colder.
An air conditioner should cycle approximately 3 maybe 4 times in an hour if it's properly sized.
As for the thermostat thermometer they are very cheap and are more for reference than actual temperature, so if 78° is not comfortable, then you should set it lower but not rely on thermostat being accurate or what the thermometer is saying as long as it is consistent.
The air conditioner and thermostat can also be set below 78°, there's a lot of people set them at 72° and below with no problems.
the only thing is if you have real low humidity you'll need to watch indoor coil or the suction line (the big line) on your outdoor unit and make sure it doesn't freeze up on you.

Sep 13, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

Our thermostat is set on 73 degrees, but it won't heat past 67 degrees.


pull the cover off the front of the t-stat [just pops off easy] you will see alittle copper dial usually on the left left side called a heat antisapator,move it to .3 this will allow the heat to stay on alittle longer

Nov 16, 2008 | Amana Heating & Cooling

1 Answer

Temp shows 2 degrees warmer than what is was set to


sometimes the furnace does a better job than anticipated, i wouldn't worry about it, especially if the furnace shuts off.
the setpoint is the temperature you want it to be
cycle lenghts are determined by how much recovery you are requesting. for instance, in the morning when you wake up, you want the temperature to be at its setpoint. what the thermostat will do is make the furnace run a limited lengths during the recovery process.

Nov 11, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Cooling Problems


Your filter is clogged. Not the one at the bottom of the unit.The one above the unit. It is like a raditor coils, kind of a bear to get to. We have cats and dogs the filter gets most of the hair but not all.Usualy about 6 bolts to take out.The proublem will be at the bottom of the top filter.

May 09, 2008 | Honeywell Electronic Programmable...

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