Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

What does the "auxillary heat"

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Joe A H.

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Auxiliary Heat is used to turn the electric heat strips ON, If the heat pump is not working. Or if the heat pump can't bring the space temperature up to Set Temperature it will display Aux Heat ON....... Assuming you have a Heat Pump System with Auxiliary Electric Heat as Back up...... If the tech didn't install a jumper wire from AUX to W on the subase which is in back of the Display on the Thermostat.....you won't get Auxiliary Heat if the Thermostat is set for Auxiliary Heat. Other wise the thermostat will turn the heat pump on first and then the electric heat (Aux Heat) if it needs it to satisfy the set temperature....... Hope this helps

Posted on Apr 21, 2011

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What does em heat mean on my thermostat

Emergency or electric heat is working.. auxillary heat is the same thing

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Need to know the type of heat you have. If it is an air to air heat pump, with this cold weather, you are not going to get much heat out of it. It will feel cool (a little higher than room temperature). If the temps outside stay below 25 degrees, then switch it to Auxillary (Emergency ) heat.

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Press the FAN & the up arrow @ the same time to get into installation programming. Follow the set up numbers correlating to options in the install instructions...Make sure it is programmed for heat pump & if you have Auxillary heat. Hit Next until you get to the reversing valve position O or B ( reversing valve energized in a call for heat or cool) and switch it to the opposite of what is in the current program. Hit Done & you should be good.

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Aux heat comes on

If you turn your heat on and the temperature is set 3 degrees above what the actual temperature of the room, the auxillary heat will automatically come on. The auxillary heat is an electric heat strip that provides heat to your home while the heat pump is in defrost cycle or if there are extremely low temperatures outside. Try not to set the temperature more than 2 degrees above the actual temperature of the room. Hope this helps.

Jan 25, 2013 | Honeywell Programmable Thermostat Heater

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We have a new a/c and the system has heat strips. For a/c. we have had the thermostat set on AC at 72degrees. Now that it is getting colder and may need some heat in the house, do we switch the...

If your thermostat has an emergency heat setting this means you have a heat pump system.
Yes you need to set the thermostat to heat for heating the house.
The emergency heat setting should never be used unless your outside unit is not functioning.
The emergency heat setting overides the heat pump (the outside unit will not be energized).
The emergency heat setting will run the auxillary heat (heat strips) only.
When the thermostat is set in the heat position the heat pump will run to heat your house.
If the heat pump can't keep up (extreme cold) then then the auxillary heat will kick in to augment the heat pump until it satisfies the thermostat settings. If your room temperature gets 2 degrees below your thermostat setpoint, your auxillary heat will kick on. Example, say you are going to be gone a couple of days and you turn your heat down to 60 degrees. When you return and it is 60 degrees in your house, you turn the thermostat up to 70 degrees. Since you are turning the temperature up 2 degrees or more (10 degrees in this case) from the 60 degree room temperature then the heat pump will come on and the auxillary heat strips. The unit will continue heating like this until the temperature in the house gets to 69 degrees and the heat strips will turn off and the heat pump will continue to run until the 70 degree setpoint is reached.
Hope this helps.
SeagullAC

Sep 15, 2011 | Heating & Cooling

1 Answer

Carrier weathermaker 8000

Hey Crystakwi, lets find out why with the informations you gave! this got to be a heat pump,-- up flow--you live in a cold climate--probably in the upper United States--! The Heat pump takes the heat out of the air down to 40*, then the auxillary heat kicks in , or you can just turn the thermostat to auxillary heat and it will kick in the back up heater, whethet it be gas heat --oil-- or electric heat to provide the heat from any degrees out side temperatures. Its cool , its just doing it job! Thank-you- very- much!

Nov 13, 2008 | Heating & Cooling

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What does the "auxillary heat"

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What does the "auxillary heat"

1 Answer

Joe A H.

Add Your Answer

Attachments: Added items

Related Questions:

What does em heat mean on my thermostat

RUDD Model UBHC-21J18SFA: Emergency heat not automatically engaging. Used to work, now I must manually turn the thermostat to "Emergency Heat" to get the elements to engage. What's broken?

My thermostat has both auxillary and emergency light on,both are green,what does that mean?

Goodman package unit heat strips will not turn on

Honeywell thermostats keep turning off and on and blowing cold air

Aux keeps coming on !on honeywell th3210d thermostat when i turn regular heat on

I have installed RTH8580WF thermostat for heat pump in my condo. I have R O Y G and I added wire. It seems it works opposite with 170=2 cools when heat on and teas when cool on.

Aux heat comes on

We have a new a/c and the system has heat strips. For a/c. we have had the thermostat set on AC at 72degrees. Now that it is getting colder and may need some heat in the house, do we switch the...

Carrier weathermaker 8000

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Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

What does em heat mean on my thermostat

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replacing Honeywell with another brand The Honeywell seems to have more wires than my replacement thermostat?

why does my thermostat keeps cutting out the signal to my bioler

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