hey guys I'm going to touch on a couple things here the question that comes up a lot is e1 codes
what possibly can happen for an e1 code and where do you start you have your normal troubleshooting
I've got a video on that how to do it with a meter and you put on DC mode and put your
two leads on two and three or either in an S it's the same thing I'll show you on my training model
here what you got but there's a couple of other things that can cause an e1 code II one code is
a communication between indoor and outdoor of a mini-split and basically what that is the data
signal in between that data signal is really light and anything can interrupt it so there's
actually a 5 volt sensor on the board itself if that is disrupted and it's four and a half
volts four volts three volts then that can throw off the communication so I'm gonna show you how
to check that and check sensors and that kind of thing just to make sure you don't have an
underlying issue and the main components of a menace but most people haven't seen the cover
off so they're very simple just trying to make them too hard and once you understand what they
are it's easier to figure out what we got so I'm gonna flip the camera around just show you okay
here's the training model and what we got is of course this is your compressor these are your
sensors you get a discharge temperature sensor you have a coil temperature sensor down here and then
on the other side in the front so you can say that's your ambient temperature sensor so you
got three main sensors on this thing you have a reactor the job of the reactor is what that does
is it removes amperage from the control board to keep the control board from burning itself out so
you have voltage but it removes the amperage so here's a few things the reactor should have very
little resistance zero resistance maybe 0.1 if anything so only thinking calls it to fail is if
the CELAC was to burn you would have a power surge or something and it was short one wire to another
other than that the reactors generally never fail what we have on the sensors all right the sensors
let me see if I can show you this up in here these sensors mainly generally go to one plug
let's see if you can see up in here right here is the main plug and then those three sensors plug in
separately to that plug one thing you can do and you can test every sensor and I have a video of
that but to keep this short what you can do is if you have any one code and your question of which
where the problem is whether it's a control board whether it's the wiring whether it's a sensor what
you do is unplug the sensors just unplug them you will throw a sensor code but your a one would go
away because if it throws the sensor code you know that the outdoor unit is now communicating with
the indoor unit so unplug your sensors let's see if we can get it right here there's your main plug
if I can get it in there zoom it in there right there so unplug your main plug for your sensors
and let's see if the e1 code goes away another thing can happen is if you have an e XV valve
right here that is one plug that exp valve see if I can find the plug it's different on every one
but all you do is just just follow your wire up and right here it is this right beside the sensors
so you can unplug that normally they will not ever throw a code for an exp valve unplug exp see if it
goes away it's an easy way of troubleshooting if it does go away and system operates then you need
to replace the exv and normally you don't have to replace the whole one just a head the head comes
off and the five volts I was talking about let me find it on the board here if you look at the
top of the board you will have voltage marks on here here see if I can zoom in there so you can
read it five volts so if you read from pin to pin you should have a dedicated 5 volts constantly on
that board if you don't have that 5 volts then one of these could actually be your trouble and
it could be just as simple as that so you might not have a board problem you can actually have
one of your sensors or TXV causing your problem and the way you would read it on the meter if you
look at my past video here we got 2 & 3 basically what this is is L 2 and then 3 is our signal wire
sometimes we have l1 l2 and s or in and s but positive here negative there DC mode it should
fluctuate between 0 and 50 volts positive to negative so those are a few steps to take to help
diagnose a II 1 code so hopefully this helps and get you started in the right direction of course
always inspect your board to make sure you don't have any burnt spots no thing I should touch on
is wouldn't you testing this there's a slack on this board and it keeps corrosion and stuff off
so when you test the 5 volts you might have to scratch just a little bit before you do it and
of course before you do then cut the power off then cut your power on and test your voltage but
you might can see that little bit of stuff they put on it to keep the corrosion off okay hope
this helps and all you want to do mini splits I got kind of a variety of videos on there but
like the video subscribe and I'm gonna have a lot more videos coming up help you Hiep you guys out