What to do to fix the E1 error on a haier her08xc7

SOURCE: Haier wall-unit AC wont work

Try unplugging the machine, waiting a couple minutes, then holding down the power button as you plug it back in. Hopefully you will hear a "beep". Then unplug it again, wait a couple minutes, and plug it back in. This procedure works for clearing the "E1" code from some of the Sharp models, so maybe you will get lucky and the same manufacturer made the control board in your machine! Couldn't hurt to try it out. ;)

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: Haier Portable A/C HPPRO9XC7

you can just take the panel off to the control and look for dirt and grime. then take a can of compressed air that you can by at a local hardwar store or office supply and blow around the buttons. also you can unplug the unit and let it reset itself sometimes this will break the circuit to the button and then it should work normally. you can also tap on the button(just enough that it will click like tapping on a window) these should help you...please rate thanks

SOURCE: Haier E!

E1 means one of the buttons on the touchpad is pressed in. The remote will still operate the unit. You might have to pull the panel of, and check all the buttons. If all seems fine replace the control board. might not be worth it thou..

SOURCE: E1 error in hitachi ac

You can either ring Hitachi service number and they should be able to tell what the error is or if it is new and you had it installed by a licensed person. Call the person who installed it, as it should be under warranty by them.