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Kim Ferrell Posted on May 18, 2019
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Awakened to find my American standard unit was displaying an error code of 79, wt to do

  • Thomas Woodburn
    Thomas Woodburn May 18, 2019

    turn breaker off to unit to reset error but will happen again. possibly get you through the weekend this way

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1 Answer

Thomas Woodburn

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  • Master 2,638 Answers
  • Posted on May 18, 2019
Thomas Woodburn
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Low pressure fault, you need service

5 Related Answers

pineworks

Clive

  • 4362 Answers
  • Posted on Jan 30, 2010

SOURCE: 79 error displayed power on power off and the

Hi
I can only say try it may work.
A solution:

  • Unplug
  • Hold down "*" & "enter/ menu buttons"
  • While holding down both buttons, turn power on
  • Wait until something like "initialize" shows up on the display
  • Let go of buttons
  • Wait until display reads "ready"
  • Unplug for 10 seconds, then plug back in
  • Please let me know if works for you.
  • All The Best Pineworks

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Anonymous

  • 614 Answers
  • Posted on Mar 25, 2010

SOURCE: LED on defrost control board is blinking 3 times

Does not initiate defrost on ots own. Loose sensor. If sensor is not loose replace defrost board and sensor. Russ

Anonymous

  • 1515 Answers
  • Posted on Apr 18, 2010

SOURCE: American Standard Air conditioning unit Model 2AGB0036A1000AB

Hi I am sure this model number is correct and it is a 3 Ton unit.Normally when the breaker trips as soon as you reset it, the compressor is compromised. Happened to me yesterday on a 5 ton heat-pump. When this happens, what you can do if you are a handy type of man, is to prove this. I don't know if the is is a split system or a all in one package unit, doesn't matter. Get to the compressor compartment. Of course the power will be off.If you can see the run capacitor, take a screw driver and short across the terminals to discharge it, as it could have a small amount of juice in it, I doubt it. Anyway, remove the plastic cover to expose the terminals. They can be hard to remove sometimes, just use a screw driver to push the clips in. Wire colors should be black for common, yellow for start, and blue for run. Write down the order they were in. To be safe, tape the metal connectors so they wont touch metal when you turn the power back on. After you have done this, turn everything back on. If the breaker holds and everything else is on, fan and so on, this proves the compressor is probably shorted to ground. If this a/c is rather new, I would replace the compressor. If it is old, I would think about getting prices on a new unit. Just food for thought. Please let me know on the out come of this test, please. When a compressor shorts out, or locks up, it draws what is called locked rotor amps/LRA which could be from 49 on up, and your breaker can be 25, 30, 35 to 40 amps so it will trip. Keep me posted and do this test, it is very easy to do.
Sincerely,
Shastalaker7

Anonymous

  • 2 Answers
  • Posted on Jul 24, 2011

SOURCE: I have an error code

I am experiencing the same error code on my American Standard AC and according to Public. #18-HD32D2-8, error code 126 is in the Equipment Change Alert Group and the description says "Equipment does not match value stored at startup." Then, in a footnote, it says "A device has changed since Auto Discovery (See Installer Guide *S& 0706 to reset)."

This is all Greek to me so I'm calling my AC guy. I can tell you this, however. I bought an American Standard AC brand new just two years ago and one year ago exactly, it blew up. American Standard replaced it. Now, one year later, more problems.

I question the quality of American Standard and would not be inclined to buy this brand again.

Anonymous

  • 1 Answer
  • Posted on Feb 03, 2013

SOURCE: error code 0142 message error code 2000-0142

My computer did boot up to the desktop, but was completely unresponsive from there when trying to open anything. I ran a system diagnostics and got this error with the status byte of 70. I rebooted into Safe Mode and was then able to open files. I backed up my stuff to a flash drive and then ran Error-Checking in the HD Properties which runs the CHKDSK function the next time the computer is rebooted. That found 2 bad file clusters and repaired them. One was a file called Windows.edb, which does the hard drive search indexing for Windows and was most likely my problem with the lockups. The other was a Napinsp.dll file. After these were fixed and the computer was rebooted, everything worked normally.
This HD is only 9 months old, but if this happens again, I'll replace it again.

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I have an error code on my american standard model # ACONT900AC43UA communicating,programmable comfort control. Says to find the Error codes from American Standard Pub 18-HD32D2-8 but I don't have...

I am experiencing the same error code on my American Standard AC and according to Public. #18-HD32D2-8, error code 126 is in the Equipment Change Alert Group and the description says "Equipment does not match value stored at startup." Then, in a footnote, it says "A device has changed since Auto Discovery (See Installer Guide *S& 0706 to reset)."

This is all Greek to me so I'm calling my AC guy. I can tell you this, however. I bought an American Standard AC brand new just two years ago and one year ago exactly, it blew up. American Standard replaced it. Now, one year later, more problems.

I question the quality of American Standard and would not be inclined to buy this brand again.
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I have error codes flashing on my thermostat..it is an american standard model the manual for the therm. has ACOT900AC43UA on front..says to find addedum 18-HD32D2-1/69-2009 for codes i cannot find it...

Error codes from American Standard Pub 18-HD32D2-8, which is a one-sheet document that came with my American Standard air-conditioner:

29 = not listed

129 = not listed

80 = HPCO Fault - problem is in outdoor unit - Desscription: High Pressure Monitor Fault (hard lock out, cycle power to reset)

91 = Communication Inactive Fault - problem is in air handler - Descriptions - COMM Bit Master Clock Error, COMM Heat/Cool Demand Error, Serial Motor Communication Inactive Error

91 = Communication Fault - problem is in furnace - Descriptions: Blower motor no COMM response, Inducer motor no COMM response, Loss of heat/cool demand, Loss of clock signal

91 = Communication Fault - problem is in outdoor unit - Descriptions: Loss of Heat/Cool Demand Message (COMM), Loss of Bit Master (Clock Signal)

91 = Communication Fault - Description: Comm line is dead and no bits have been received.

By the way, I do not recommend American Standard. I've had mine 14 months and it just blew up - the entire control panel blew. My advice to you - think about a different brand.

Nancy
Scottsdale, Arizona
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Xbox 360 displays error E 79 on the screen and flash code 1433. Can't find anything about this can anyone help?

E 79 is a hard drive failure I do believe. Will the unit start up if you remove the HD, without the error code?? Take it off before you power it up.
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