My air conditioner will not turn on. Only displays an E1 code. Was working fine. Went to turn it off and wouldn't do anything. Finally went off by itself and now will not do anything but display E1 code.

SOURCE: haier air conditioner

One thing you can try is to hold down on the power button and plug the unit in. Hopefully you will hear a "beep". Then you need to unplug it for a minute and plug it back in. This is a known procedure to clear error codes from the control computer on units similar to yours, so it might possibly work. Something else you can do is download and look through the Users Manual for your model, which is at this URL: --> http://www.haier.com/products/product.asp?proID=1797 Hope this helps! ;)

SOURCE: E1 error code

highly annoying issue error code E1. After hours
of fan operation, the error code E1 will appear on the seven segment
LED temperature display. This error code is intended as a reminder for
the user to clean the air filter. However, because the procedure
outlined in the user manual does not clear this error code as
indicated, and the appliance has a nonvolatile memory that cannot be
reset by simply unplugging it, the user of the appliance will become
mightily frustrated, standing in potentially sweltering heat watching
the appliance repeatedly shut down in the midst of operation with the
"E1" display flashing.

Believe it or not, that is what it does: if you unplug it to remove the
"E1" code from the display, and plug it back in and re-start it, it
will simply run for anywhere from a few minutes to a few hours, and
then merrily shut down again with the same flashing "E1" code.

So you will come home to a hot bedroom, living room, etc. unexpectedly,
and you will NOT be amused, as I was not.

Many people at this point, having put the manual under the canary or
some such, will simply return the unit and never buy another Sharp air
conditioner. But for the tech-savvy and search-adept, I offer the
following procedure to clear the nefarious E1 indication, and obtain

1. Power down the air conditioner using the "power" button on the front
panel.
2. Unplug the air conditioner from the wall socket.
3. Hold the front panel "power" button down and plug the air
conditioner in. Continue to hold the power button down as the machine
goes through a brief test sequence (fan & compressor each come on
briefly, etc). There is a "beep" sound at the end of the test sequence,
and the machine will be off. At this point, you can release the power
button.
4. Unplug the air conditioner.
5. Plug the air conditioner back in.
6. Congratulations! You should now be able to operate the air
conditioner normally for another 720 hours, but only if you followed
the instructions above EXACTLY.
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SOURCE: My Haier 8,000 BTU air

I had that same problem, find the remote and use that to turn it on / off. It solved the problem for me, for whatever reason. You will need to use the remote until the buttons start working again, took mine a few days. I have no idea what was wrong with it.

Edit: I Still get notifications about this 11 years later. I did figure out what was wrong with it. In my case, the E1 notification was because the control panel on the AC was frozen and not working. But the remote control still worked.

SOURCE: My electronic panel will not work at all.

Let me make a correction please: my electricity did not go out! I unplugged the air conditioner during a rain storm and then let it sit for 24 hours now it works--please fixya folks I don't mind if you edit my words my what you changed isn't true thanks

SOURCE: E2 error code on Haier cprd12xh7 portable air conditioner

Hi! You need to check pump filter. It could be jammed with a coin or hair clip. Now take the machine outside and empty it then lay it on its side and you can access the pump. Take it off, stand up the machine and pour hot water into the soap draw and check water should run out of bottom freely taking any fluff or bits with it. Now take apart the pump and clean it and dry all components before re-assembly. If the machine still doesn?t work then you need to replace the pump. Please do rate this solution as FixYa and revert for further assistance. Thanks Rylee