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Were is the evaporator thermister (ICT) located at in a Amana PTAC UNIT

I have a Amana Ptac unit that flashes 3blinking red lightsand says replace the Evaporator thermister (ITC) were is that located

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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koolbreezes
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SOURCE: charging a ptac unit?

Full service both coils first ,add your filter, then add a line temperature probe in the supply air flow or on the line going to the compressor add freon till you get the lowest temperature nad then it will start to climb, you've had the correct charge,!

Posted on Sep 08, 2008

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  • 142 Answers

SOURCE: 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.

Posted on Feb 12, 2009

KLR Monkey
  • 22 Answers

SOURCE: Amana PTAC cannot be turned on.

sound like a thermister problem, however this may also be a circuit board problem, the system is controled by the outdoor board, check to see if you have a blown inline fuse in the outdoor unit, it will be under a red case in one of the wires.

Posted on Feb 01, 2010

  • 534 Answers

SOURCE: I have a amana ptac through the wall unit. the

several things could be the cause but lets start with the easiest first. check the filter to see if it is clean. if so then you need to see if the coils behind the filter are clean. a blockage of air flow will cause the unit to freeze up. If the coils look dirty then you can purchase a coil cleaner (aerosol) from a home improvement store or an a/c supply house and follow the directions on how to clean. These coils should look nice and shiny. If all of the above mentioned are in good shape then you possibly have a low charge of freon in the system. In that case an a/c tech will bee required since the usage of freon is only to be done by certified techs.
Hope this helped
Dave

Posted on Feb 21, 2010

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1 Answer

My Amana ptac unit is blowing air but it's not coming out of the unit as cold as it should therefore never reaching the desired temp of 65...does my unit need 2 be recharged or are lines froze...???


it's known as the split. Room air going into the unit should be 10 to 12 degrees cooler coming out. Unit size, area to be cooled, insulation value and local weather are considered. If the split is close to the numbers the unit is doing all it can. If it's low on freon the evaporation coils will freeze and ice over.

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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.

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I think your PTAC is under charge, if the air filter is clean and the evaporator is also clean together with the blower. Check the freon charge and refill if suction pressure is below 50psi and discharge is below 190 psi.

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I have seen this happen many times and if you cannot relocate the bulb of the thermostat to keep it form short cycling, I have mounted a wall thermostat and disconnected the thermostat in the PTAC and wired it in to the wall stat. You may have to install a wall stat in the center of the room away from the bar.

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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.

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Compressor runs continuously regardless of temperature setting. How do I replace the thermocouple in the unit?


I doubt that thang havind a thermocouple. Too new. Must have a thermister. A thermister changes in resistance as temp changes around it. The control monitors the change and shuts down the ac when the desired temp is reached. It is either going to be the thermister OR the control. If you do not know which it is you go with the cheapest part first right? I have a PTAC manual but it ain't an LG. I would be willing to bet though the same folks made this one. It will at least give a clue what to check on this beast: PTAC service manual

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1 Answer

Amana PTAC cannot be turned on.


sound like a thermister problem, however this may also be a circuit board problem, the system is controled by the outdoor board, check to see if you have a blown inline fuse in the outdoor unit, it will be under a red case in one of the wires.

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Finding a less expensive cover for my ptac unit


These units are changed out quite often. You should be able to find you a cover on line. Try any ac parts web site. Russ You will need model number of unit.

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