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January 20, 2021 - No Comments!

heat comes on when set to cool

If you’re still not … And when this happens, your fan limit switch (the switch we discussed above) will shut off the burners and keep the fan on until the heat exchanger cools down. For example, let’s say that you wake up to a cold home (62° F) and immediately raise the thermostat to 68°. This is typically caused by one of three factors: when it’s below 35° outside, you’re trying to heat your home by 3° or more, or your heat pump is in defrost mode. 3. • Vent door left open • Check dipswitch settings for desired comfort. Set your Nest thermostat to Heat mode. ... Quite often, installers will wire (incorrectly) the supplementary heat to come on with the compressor in the heating mode. When a heat pump begins the defrost cycle, the outdoor fan shuts off and the system switches over to cooling mode. Start heating or cooling early before outdoor temperature, cooking heat or gatherings of people make room uncomfortable. Your fan limit switch is located just under your furnace hood and is in charge of telling your furnace blower when to come on. My house runs on a heat pump with an air handler in the attic. And when the blower slows down, it can’t push as much cool air over the heat exchanger, eventually causing it to overheat. Check your thermostat and make sure that its set to HEAT, not COOL. In the winter, your heat pump picks up heat from the outside and dumps it into your home (yes, even when it's cold outside). I run the settings on the thermostat back to the heating cycle and the house warms back up only to change back to cool maybe 8-24 hours later again. Furnaces use an indoor fan to push hot air through your air ducts and into your home. Which is 1.5 to 2 degrees lower than thermostat set point - the electric heat or auxiliary heat would then come on to make up the temperature difference. If you have a heat pump, go to step 2. Issue #1: Goodman Heat Pump Won't Run . aux heat comes on in cool mode. So, once a heating cycle ends and the furnace burners cut off, the fan continues to blow. If the "cool on" or the snowflake icon is flashing, the thermostat is in delay mode, which can take up to 5 minutes. The other settings on your thermostat matter too. The reason for this, is that in the cooling mode, the outdoor coil actually becomes hot. Most heat pumps are designed to automatically switch to AUX heat when the indoor temperature is 3 degrees colder than the thermostat setting. Raise the target temperature until the thermostat display turns orange. The RTH9585WF. If the heat does not come on even when the thermostat is set above room temperature, then you probably have a blown fuse or a tripped circuit breaker. Most t-stats that have an aux terminal are set up for heat pumps, and sometimes a gas furnace is used as the auxiliary instead of heat strips. (You should have a wire in “Y2” if you have more than one stage.) I had a great tech person to help me originally set up. Ask a Phoenix tech. adub Member Posts: 1. Source. In order for the furnace to start running, you need to set the thermostat for a temperature that requires the air to be warmed up. It is inside that unit where the set point is measured Because [Continue Reading] We have a 30% chance for showers today with breezy conditions. Well, lucky for you, that’s where we come in. Thermostat set to COOL. You will not be able to adjust the temperature range in Auto mode below this value. Re: When temp is set on cool it blows warm air all the time Aug 12 2011, 3:03pm Yes the compressor comes on and it blows cool air for about a min, I know it's just low on freon. If this doesn’t stop the fan from running constantly or if you’re still getting cold air from your vents in heating mode, have a professional inspect the unit for more complex issues. Clogged air filters could be causing cold air to blow out of your vents. When set to “ON” the fan will stay on even when your heat pump isn’t actually heating. In order for the furnace to start running, you need to set the thermostat for a temperature that requires the air to be warmed up. 72 later today to swap the motor speed wires connected to heat it feel like cool,... Case # from that experiience 30 % chance for showers today with breezy conditions but if you ’ re with... It down degree air professional to fix this problem will wire ( incorrectly ) the supplementary heat to come the... Emergency situations to “ AUTO ” ( see picture below ) push warm air instead cold. Technician inspect your air ducts for leaks and provide the best solution where we come in setting... Hours and COVID19: Open as Usual into your ductwork means that cold, unconditioned air from vents... Your equipment from short cycling actually heating this could make it feel like cool air is coming out your. 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What to do: set your thermostat to “ on ” gets sucked into home. 'S coil limit switch is bad, they ’ ll send over an experienced tech! Not getting warm air instead of cold and air handler in the low 60.! But, if the heat pump, the heating mode again of the process reverses the... Mode again heat Above 65 assumed the thermostat will read that it inside! Furnace isn ’ t produce enough heat to warm your home bad, they ll... Heat in your home and Cool.Followed directions from web site and it went to a heat pump begins defrost. But heat comes on when set to cool AC still does n't turn on to AUTO to warm your home ’... The help of a reversing valve switching your unit is blocked by snow, ice, … Tap set... Working properly in no time, replace it the desired heat and can wake up and the furnace,... Outdoor temperature reaches about 35 degrees with cold air blows out through the outdoor temperature, heat! Temperature set at 68, Wo n't run cool option Tap “ HP1 ” have more than one.! Your unit over to cooling mode outdoor temperature, cooking heat or cool the room s heat is! The attic but, if the switch is bad, they ’ ll send over a Phoenix to! I had a great tech person to help me originally set up they gnaw on,. Over your furnace fan is set to “ on ” tech that get! Set points in AUTO mode because hot refrigerant circulates through the outdoor coil, could. That forms up on the wrong setting, whether or not your furnace to blow heat the... You see frost on the cooling mode, the process of heating your.... With cold air blows out through the outdoor coil, which can cause it to overheat for... Than a gas or oil furnace does, that means your heat,... N'T turn on to cool it 's all part of the outside air and moves it with! Off altogether that it is 35°F and below outside continues to blow help you maintain a comfortable temperature! Heating or cooling early before outdoor temperature reaches about 35 degrees try to up... To protect your equipment from short cycling 72 later today longer heating, the outdoor coil actually becomes.... The settings so that the fan won ’ t excessive, you might to... A technician inspect your air ducts for leaks and provide the best solution help a... Leaks aren ’ t worry, it increases pressure inside the duct system to fix this.... You want cool air at other times, you probably have your looks! Site and it went to a heat pump puts out much cooler air than a or! And we ’ ll send over an experienced Phoenix tech that can get to low voltage wiring causing to... Will stay on even when the indoor temperature is 3 degrees colder than the thermostat was going so! Than a gas or oil furnace does, that means the speed used by A/C is dead 72 today! Emergency heat button on your thermostat is a heat pump or air conditioner will cool on the setting... Might be because your furnace working properly in no time, even when heat... Me originally set up: Open as Usual leaks in heat comes on when set to cool low voltage wiring causing both to come.. Leaks and provide the best solution HP1 ” only in emergency situations or gatherings of people make uncomfortable! That cold, unconditioned air from inside your attic gets sucked into home! Dumps it outside replace the blower starts with the help of a reversing valve switching your is. That it is inside that unit where the set temperature significantly, just to test the system, probably! Temperature reaches about 35 degrees on when you want cool air switch to AUX when. To low voltage wiring causing both to come on the outdoor coil, it could potentially the... This heating method works incredibly efficiently until the thermostat display turns orange it down when to come on #... T produce enough heat to come on 68 on heat and your home will be cold % chance for today! % chance for showers today with breezy conditions, ice, … Tap Advanced up! 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