Question about Amana PTH123B25AJ Heat Pump Air Conditioner

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Amana PTAC Unit is not producing heat. Fan works fine. can not locate manual reset for heat although a label on the unit says there is one.

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  • volman Feb 28, 2008

    heat was working fine yesterday. turn back on today its just blowing cold air. units just year and half old

  • Anonymous Mar 17, 2014

    amana fan not running on heat, unit iced up

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HVAC MAN CAME OUT. I HAD EXACT SAME PROBLEM. CONTOL PANEL BURNED OUT. RESET BUTTON IGNORE BECAUSE THEIR IS NOT ONE. PARTS UNDER WARRANTY AND I'VE HAD FOR ABOUT 5 YRS. HOPE THIS HELPS.

Posted on Nov 27, 2007

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Sounds like if this is a heat pump, maybe it tripped out on high pressure. Maybe just unplugging the system may reset the control boards. This maybe due to a dirty filter or dirty evaporator coil.

Posted on Nov 18, 2007

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2 Answers

My AMANA PTAC unit model # PTH093b35ae is not producing heat. My air conditioner works fine. So, I get cold air. However, when I switch to heat, it still runs but does not produce any heat.


It is not switching from cooling into heating. You probably need to have a service tech look at the unit. Sorry. It could be control board or stuck reversing valve.

Sep 09, 2018 | Amana Heating & Cooling

1 Answer

My amana ptac is not heating....the code "np" is displayed....how do I correct this...we just installed the unit and know little about operation. Thanks


I don't see this error code in the manual. I do see nP as an error code for Window Switch lockout. I just had this happen to me and they had me reset the control board.

Remove case, flick master switch to OFF for 10 seconds. Press Heat/Cool same time turn switch back on HOLD until off light comes on.

You should be fixed. Just had to do this for my unit. I was playing around with the settings and turned on the window switch option by accident.

Feb 02, 2013 | Amana In Wall Install Kit For Digismart...

1 Answer

I have an Amana PTAC unit model no. PTH153B50AM. It will not heat, but the fan runs continuously in the heat mode. The unit has a label that says it has a manual reset for the heater, but no direction as...


First unplug the unit......Take the front cover off, take the wire screen off where the front fan is there is 4 or 5 screws that hold the plate that was under the screen. The electric heating elements are under that plate between the evaporator coil and the front blower wheel. It will lift straight up and give you access to the elements. In the electric heating element area there is a limit switch with a red or black button in the center of it push it to reset the limit it is on the right hand side by the controls. I wish I could find a picture to show you but I couldn't find one. It is not easy to get to... Hope this helps.

Feb 12, 2011 | Amana PTH153B50AM Air Conditioner

1 Answer

Amana PTAC PTC093A35AA won't blow heat


The reset button is located behing a panel on the front of the unit that is labeled Heat Reset. If that label is gone then look around, it is a small hole, small enough for a paper clip to fit through.
That being said, I have 137 of these units in one of my hotels and have not had a single one needing to be reset. You probably are going to need a new control board kit. These can be purchased from Amana. They are $130. Make sure that you have pulled the heater coil out and inspected it first. Also, there was a recall years ago where Amana was supposed to contact and send out new voltage switches. These are the round black things that the Brown heater wires connect to on the upper and lower side of the heating coil. You should also try to replace those if you find the coil in good condition. I have had those resolve heating issues. Most of the heating issues were a result of a bad relay on the control board though.
Please remember to rate this fix.

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5 Answers

Amana PTAC


I know this is late but I had to add a solution to this problem since I had the exact same problem and was able to solve it. The probelm is not your control board. On these units, the heat pump compressor will not kick in unless the temperature you set on the control panel is within 2-1/4 degrees (or 4 degrees depending on your unit model. Otherwise, the unit locks out the compressor until the electric heat coil bring the indoor temperature up to that level - and then will switch the compressor back on for heat pump operation. So the problem is not the control panel or the compressor, it the electric heat coil. The coil has two manual limit switches on it that may be tripped and should be checked. The coil can be easily accessed by shutting down the power, removing 4 screws around the air outlet, pushing the screen up and sliding the panel out the top. The power wires can remain in place while the limit switches are reset. Hope it works.

Nov 02, 2008 | Amana PTH123B25AJ Heat Pump Air...

1 Answer

Charging a ptac


Either or, they both are the same ends but different routes..

Sep 08, 2008 | Amana PTH123B25AJ Heat Pump Air...

3 Answers

Ptac fan keeps blowing


Try setting the fan control to "AUTO" this will cause it to cut out with the compressor.

May 02, 2007 | Amana PTH123B25AJ Heat Pump Air...

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