Amana ptac i recieved a power cord replacement as per recall. did as instructions said. I did turn off master off/on switch on pc board. after i was finished I turned switch on/ closed cover and plugged in cord. the panel lit up and i pushed HEAT. cold air blew for abt 30 seconds and stopped and a clicking noise began. I unplugged cord and started looking for answers. can u advise? its less then a year old.

Question edited for a lot more clarity.

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Probably this one. Talk to your installer.

https://www.amana-ptac.com/products/ptac/hec154j

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Hydronic switch open 9 E9 Hydronic switch open (if hydronic configured) - either the aquastat is defective, or the aquastat wiring is cut, or the aquastat is not present at all and the aquastat wires were not permanently connected together as per the set-up instructions.

diagnostic codes for ptac/pthp electronic control

https://www.google.com/search?q=Amana+PTAC+error+code+09

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Does the power light come on?
If yes, then you can do a reset as below:
There is a master switch on the bottom left of the control board. Slide that to 'off' position.
Then press the hot and cold switch/key together and then slide the master switch back to 'on'.
Please put your response/observation here if that does not work or there is power light as asked on top.
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.

see if you can find a new board the power failure fried it

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.

You need a new control board. The relays go out on these. If your unit is less than a year old then you should still be under warranty. Unless you did not send in the warranty card, then the company only warrants the unit for 1 year after the mfg. date. You will need to provide the serial and part number to find out from Amana. The new control boards are much better by the way, and worse come to worse, they are only $130. Please let me know if this has helped in any way.

First off, you need to unplug power from the unit before handling anything on it, not just the master switch on the control board. There is still live power being fed to the unit while it is plugged in!
Now, the clicking sound you are hearing is a faulty relay on the control board. You have to replace the control board. The new ones are available from Amana/Goodman Mfg.. You will find, assuming you have more of these, your other units are going to start doing the same thing. It will be the same problem. When they send out the new control board, make sure you program the board. They no longer come pre programmed. It is actually a huge improvement on the older control board upgrades. Hope this helps, I have 140 of these in my hotel, I know them all too well. Let me know if you have any other questions and please rate this as a fix ya.

sounds like your control board could be bad,I'm a master a/c tech I work on these from time to time and I have more problems with the control boards,what brand is it

Reset the unit to factory setting by take the master switch off of 10 sec.
Then press and hold the cool and heat button down while turning the master switch back on.