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Unit blows cool air while in heat mode

Even with thermostat set to 86 the unit blows cool air while in heat mode --- as long as it is in JET mode, the air is warm

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  • LG Master
  • 1,249 Answers

Model number? Heat pumps tend to blow cooler air than a space heater unless in money-gobbling mode.

Posted on Apr 01, 2014

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6ya6ya
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Posted on Jan 02, 2017

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  • 49 Answers

SOURCE: reverse unit. Heater only blows air, not warm air

If you have a reverse cycle unit (heat pump) your compressor and your fan should be running. You need to determine if your compressor is running.

Posted on Nov 08, 2007

  • 54 Answers

SOURCE: Problem with GE Zoneline 5200 model

Heat pumps have saftey circuits that prevent liquid flooding of the compressor. Inadequate airflow across the evaporator in cooling can trip this circuit. Have your package unit serviced with particular attention to cleaning the evaporator coil and be sure your filters are clean and changed frequently in the summer months. Hope this helps GL!

Posted on Jun 08, 2008

Sea Breeze
  • 4654 Answers

SOURCE: Will not cool properly.

You have either a faulty thermostat, dirty condenser and evaporator or a faulty run capacitor. Need to service soon before the compressor is damaged. Sea Breeze

Posted on Jul 06, 2009

  • 232 Answers

SOURCE: "cool on " flashing..no heat or cool air blowing

when its flashing its in a 5 min delay mode if you wait 5 min and still flashing you may need a new stat. but give it a full 5 min.

Posted on Sep 20, 2009

Sparky2012
  • 102 Answers

SOURCE: my ptac is not blowing hot air only blows warm air

freon is low or outside is very cold

Posted on Dec 04, 2009

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My Honeywell thermostat isnt keeping my house cool even though the temp is set to 69. Currently 90 degrees in here


Its probably not the thermostat. The air conditioner may be stuck on heating mode. If its a reverse cycle, the reversing valve may be jammed so even when the thermostat is calling for cold air, it stays on heat. If the machine is on heating mode, it should be blowing cold air out of the outdoor unit of the air con. If its on cooling mode, the outdoor should be blowing hot air.

Apr 12, 2015 | Honeywell Heat/Cool Thermostat

1 Answer

Heat Pump - blows heat to set temp, then off, then kicks on to blow cold


Heat pumps defrost which is the AC mode, if the heat strip isnt working during a defrost, the air will be cold, A heat pump only feels warm if the heat strips are on too! the refrigeration cycles heat output is much less sensible to our 98F skin. heat pumps that satisfy a room setpoint are working at least, all heat pumps feel drafty to most.

Oct 28, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

Heater blowing cool air


Is it set on summer switch which is the fan running all the time blowing cold air

Feb 15, 2012 | Heating & Cooling

1 Answer

What happen when your hvac blows cold air and the heat is set at 73


Sounds like you have a thermostat problem. If your thermostat is not triggering the furnace to ON/HEAT you will not the heat you desire. IF you know how to trigger the furnace you could jump your furnace controller wires BUT DON'T do this. Instead, get another thermostat and try it. But be sure to get the same rated thermostat... take it with you when looking for a replacement.
Not sure about everything going on with your unit based upon what you provided but your thermostat should show the current temp and the temp you set. It also show the mode that the thermostat is in (HEAT / COOL / AUTO) Manually select heat, then increase temp above the current temp setting. listen for furnace to activate or wait a few minutes for warm air output. If not, you'll have to see assistance trom a local heating and cooling company.

Mar 09, 2011 | Goodman Heating & Cooling

1 Answer

Why would cool air be blowing out of my central ac unit condensor that sits outside? The other unit I have next to it blows out warm air and responds well to thermostat changes. The unit blowing cool air...


It probably has a low refrigerant charge. The air coming out of the outside unit should be warmer than the outdoor temperature when in the cooling mode and if it's a heat pump it should be colder than the outdoor temperature in the the heating mode. Check the big line going to the unit, it should be somewhere around the 40 F range and the small line should be hot.

May 23, 2010 | Goodman CKL24AR24 Air Conditioner

1 Answer

Blowing out warm air


Turn thermostat switch to 'cool' setting. It's a 'heat pump' and is in the heat mode.

Nov 05, 2009 | Coffee Makers & Espresso Machines

1 Answer

Bryant Legacy Line air conditioning not blowing cool air..


Your outdoor condenser is in heat mode. Check the wires on the thermostat. Sounds like a small wiring problem and nothing else. Good luck. Please keep me posted as to you progress.

Apr 27, 2009 | Bryant 462AJC021BA Air Conditioner

2 Answers

Heat pump that just blows cool air


is the condenser operating? what is the outdoor temperature? A heat pump is a cooling system with a reverse gear, most reversing valves which make this possible fail to the heat mode so it is not likely to be the problem. You should have either gas or electric back-up heat. If you switch to emergency heat do you get warm air? Really need to find out more to make an informed guess at your problem, the simple stupid would be is the circuit breaker to the condensing unit possibly tripped or shut off?

Dec 18, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Thermostat setting


what i would do is see if the outside unit is working at all. when you first turn it on the air was warm due to the fact that the temperature inside was cooler than the set point. when it get within 2 degrees the unit shuts off the backup heat and your running on the hp alone. with both stages at the same temp you are running the hp and the electric heater and that can become very expensive. What I would do is make sure that the filters were clean and look at the outside unit and see if it has a red reset button on it, if it does reset it and see if the unit runs. If it doesn't then you need to call a quallified service person out to take care of the problem.

Dec 16, 2008 | Weather King 12AJA6001AH Air Conditioner

2 Answers

Problem with mitsubishi air roof units


to tricked the thermostat only a way i know,to put on it an ice cube for a while.propably wrong choice to installed roof unit you must installed to the floor better for the ac and to you

Dec 13, 2008 | Mitsubishi Mr. Slim MXZ30TN Air...

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