Question about Air Conditioners

1 Answer

Heat pump blows heat half the time and cold half the time

The heat pump heat works normal....until....it will kick on and blow cold air sometimes. This causes a quick temp drop in my 450 SF bonus room area (71 degrees down to 68 in only 2 minutes for example).
I turn it off and sometimes when i turn it on again it works normal and sometimes it doesn't....
Amana heat pump http://www.dnmech.com/lit/20209826.pdf

Posted by on

  • ronmantwist Dec 03, 2008

    Hmmm, i think you may be right....although i haven't noticed the outside unit frosting up....But, something i didn't mention before (in my hopes that it didn't have anything to do with problem) is that this past summer the fan on the outside unit died so i had to replace it. i was in a hurry because it was very hot (95 to 100 F outside and inside - bonus room) and i have someone living up there.

    The new fan i used didn't have as many wires as the old fan so i had to just connect it directly to the power source near the bottom....not using the other connections that were used by the old fan located on the little computer board near the top. This worked great....for the cooling in the summer.

    I think perhaps i bypassed some anti-defrost connections on the outside unit board, and this might be the problem....?

    Here's a pic of the connections before i made the change.

    thanks!

  • ronmantwist Dec 04, 2008

    Its not the right motor, but the closest i could find on short notice....do you know a website/store that i could order the correct one from?

    I'll also check the wiring diagram.......

    thanks for the response!

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 25 Answers

It sounds like it is just going into the defrost cycle. Go outside and see if it is iced up. If it is, it reverses itself to melt the ice. Heat strips should come on if unit has them

Posted on Dec 03, 2008

  • Walter Whitaker
    Walter Whitaker Dec 03, 2008

    Sounds like you hit it on the head. No power going to the fan from wires from board to motor that was there before. There may be a way to jump it, but I would ask a serviceman to see, or get the right motor for it. If it is the replacement motor for the unit, there has to be some way to jump it for it to work. Check the diagram on back of the door, and you may get some help from it.

  • Walter Whitaker
    Walter Whitaker Dec 04, 2008

    Check www.grainger .com They will come closer than anyone else, and they will ship it to you. Their prices are a lot cheaper than a dealer. If you have the old one, get the model number, and you can search to see if they have it.

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My Goodman split unit has bumping/knocking noise sometimes (not everyday) when heat first kicks on in the mornings only. What could this be? Also in defrost mode should the unit blow cold air?


May be the fan in the external unit is ruined or the internal pump is comming loose. But note that the pump also make much effort until the gas flows smoothly through the pipes .

Feb 27, 2015 | Goodman Air Conditioners

1 Answer

The heat and ac work, but not all the time. When I first turn the heat on it blows hot, but over a two or more hour period is stops blowing hot and is cold air coming out only.


Ice buildup on the coils is not normal. Once iced over, the coils can no longer extract heat out of the air which is how a heat-pump like this works.

Dec 09, 2014 | Air Conditioners

1 Answer

Heat cycles off too often


Proper make & model of furnace please.

Jan 03, 2013 | Coleman Air Conditioners

1 Answer

I have two Friedrich PDE15KSB-C units. When trying to turn on the heat neither will kick into the heat mode. They both blow cold air only. When they are first turned on the air blows, and there is a...


Keep +10 degree from your room temp and also thermostat in "heat" . And then check. But in your case, I think RV not energized. If no proper voltage in RV in heat mode, check the wiring to RV. If voltage in means RV not working properly. You have to change RV. Thanks.

Dec 14, 2010 | Friedrich PDE15K3SB Portable Air...

1 Answer

REPLACED BOTH ELEMENTS GOT HOT WATER FOR 1 SHOW THEN IT GOT COOLER AND COOLER AND NOW ITS COLD ONLY?


Find a reputable HVAC contractor to do a room by room analysis with heat and cooling loads calculated and units sized and duct requirements and compare to what you have.

The air not being cold is not necessarily an indicator of anything malfunctioning. High efficiency units for instance don't produce cold air.

Since you have had someone look at it, the duct work may be collapsed which restricts air flow or uninsulated which warms up the supply air. Either one is a possibility. Any Cox Cable guys been stompin' around your attic lately? Wouldn't be the first time.

Usually, when the air coming out of the vents is not cold enuf it's because your freon level is low. Probably leaking, but they can usually recharge the freon and it will work for a while. Try another repair company and see if they can recheck the freon level.

We have a high efficiency unit and it produces cold air, so I don't know what previous poster is referring to. Air conditioners are supposed to blow cold air.

Sorry, to tell ya but it is normal if the outdoor temperatures are much below 45 degrees. Below 45 degrees there is little heat outdoors for the heat pump to grab to heat the home so it will run 24/7 and blow cool or cold air. Below 45 the temp of the air coming out the vent will decline and you will get no heat from the heat pump itself as you near freezing.

Your emergency heat or auxiliary heat is electric strip heat. But it only kicks in during normal operation if the temp in the house drops 3 degrees below the setting. (some tstats if can be 5 deg.) Otherwise the heat pump will blow cool or cold air the rest of the time if it is too cold out.

To prevent it from running all the time and blowing cold it is recommended if the temp outside is falling below 45 degrees you should just switch to the emergency heat setting, which shuts the pump outdoors off, and just heat with the electric.

But if there is no heat outside the heat pumps will blow cold. They are the cheapest and most efficient forms of heat but only as long as the outdoor temp is above that 45 deg..

I'm guessing that if you haven't experienced this you live in some place with moderate winter temperatures like in Northern Florida and rarely get very cold winter temps like the freezing you have seen there recently.

It will likely blow much warmer when the outdoor temp rises.


Aug 02, 2010 | Air Conditioners

1 Answer

Is it normal operation for these units to EVER blow out cold air or "nonheated" air when unit is in heat mode?


Yes. Heat pumps have to go into defrost just like a freezer when the temp gets too cold outside. The heat pump will temper the indoor air electric heat.

Apr 12, 2010 | Amana PTH123B25AJ Heat Pump Air...

1 Answer

Heat pump seems to be blowing alot of cold air and making more noise than it usually does


Most of the time when a heat pump starts blowing cold air it is low on refrigerant or **** in one cycle or the other. Try to switch from heat to cool several times. If this does not work you will ahve to call a service Tech . there is only so much you can do. Russ

Jul 23, 2009 | DeLonghi Air Conditioners

1 Answer

Electric furnace blows cold air before and after warm air.


It is normal. Your house has to go down a couple more degrees because the heat pump is not working. You can solve this by rewirng you thermostat. Take off the wire that goes to Y and tape off. Then take the wires that are marked w and e or w1 and put the wires to yellow. Do not run ac with it wired like this. If you need more information please post me back

Nov 29, 2008 | Air Conditioners

2 Answers

Heat Pump Stops Working only in the Early Morning


When the unit does what you say does the fan motor outside stop also , if it does that means it is in defrost mode and should kick back over to normal after the system heats up the coil enough

Nov 24, 2008 | Weather King 12AJA4801AH Air Conditioner

Not finding what you are looking for?
Air Conditioners Logo

Related Topics:

213 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Conditioners Experts

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Bill Long

Level 3 Expert

577 Answers

Tim Whalen

Level 3 Expert

3056 Answers

Are you an Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...