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A technician diagnoses and replaces a failed ECM blower motor in an HVAC air handler. After confirming the system was receiving both high-voltage power and the low-voltage call for the fan, the technician replaces the faulty motor with a compatible unit, verifies the amp draw, and documents the repair using a CRM tool.
hey guys i wasn't going to show y'all today's video
because it shows a um a shocking mess up
of mine but hey this was within the realm of normal work
and figured i'd show you stay tuned
system has been chronically icing up i'm gonna turn
the fan to own i don't really hear anything let's
go up top it's
a little bit warm up here
but at least it's
a short journey because
my air handler is right here let me move
this i'm gonna try to get up here and sit down
And I do not hear the blower running.
Okay,
we have
no big
surprise
here.
We have an ECM motor, X13 style.
That's the first thing I'm going to check.
I'm going to go right to the motor
and see if we got a call and go from there.
I'm going to see if I can put y'all right there.
That might be a good point of view.
I can't tell.
Get my meter out.
I'm going to have to tell you what it reads.
First of all, these two wires are my low voltage wires.
The blue one is going to be for my fan.
It is on two.
and the white one is for heat they both
are just low voltage to bring on the fan
on this plug we have 240 volts
and are common for low voltage first
thing i need to do is check for
on these wires right here the yellow
and the black make sure it's getting 240 volts
and i'll have
to tell you
what it says
well yeah
y'all look at my
meter please
right here
i'm gonna have to watch
that on the video
okay what i was trying to do was check power right here
and apparently i touched ground. i'm gonna
have to go get some more leads just
so i can check it. it's pretty clear that one's got power. i'll be
right back. we're gonna try this again. i just happen
to have an extra meter. see if i can do
this without touching anything.
240. okay thank you. all right now what we want
to do we're going to put
one of these in common. what we want to do is make sure
that one of these up here has 24 volts on it.
I'm gonna go with the blue one because that's normally my fan
and if y'all can see it has 28
volts so that motor should
be running. It is hot up here.
All right blue is on two
and white is on
four. Y'all gotta remember
that. That ground actually
goes to this plug right here.
Put that
back in and if we're
lucky that will
pull right out.
Now we gotta take
this to the van.
All right
this might have something to do with why that motor failed.
I'm just saying. I gotta pull this.
Oh wait a minute, here's that sticker right here.
208 230 4.1 amps half horsepower.
208 230 4 amps. We're gonna try it.
It's either that or a 30
minute drive back to town. That is ugly. Ugly.
Already got this sanded down. I'm gonna see if
we can't pull it
without too much
without too much
work. Y'all are
wondering what
wrench that is.
That's
a
wearer.
I can't
find
my
little
climb
bit. I'm
having
a
rough
day.
Can't
tell.
Oh
wait a
minute.
You just want to be careful not to...
Put one
of these screws
in the set screw hole.
I've done it.
You don't want
to do that. It'll
turn.
Okay.
Tighten
those
up.
Now
we're
tucked
up
near
the
top
near
these
vent
holes
on
our
band.
That is a
massive
bolt head
on that thing.
That is a 22
millimeter
bolt.
Force power
282 30 single
phase 4.1
ounce.
Okay on this
one this
little plug
converts it
to 115
or 120 volts.
We
are not
using
that.
Sorry
if y'all
couldn't
see that.
They're
all kind
of loose.
That's
good.
Okay,
that is ready.
We just need to
extricate this
little thing.
This was much
more useful
in a
different
situation.
I'm just
now
looking
to see
if this
wheel
is
clean,
and
thankfully
it is.
I sure didn't
pull it out,
did I? This has
got rust on it.
Make sure it's
in the flat
part
right
here.
We're
ready
to go
back.
Remember,
we
might
need
this
on
the
ground.
I need to inspect
this real close.
I think that's, that's okay.
Get in there nice and snug.
Now when I plug up this other low voltage,
I shouldn't have nothing on the white one.
When I plug this one up,
tell you what, why don't we use
this if it still works.
We're going to
measure our amps.
I'm gonna do it right here
on this black wire.
Remember it was rated at 3.8 to
4. I'm gonna plug this up to 2. Now
this motor should go both directions until it figures out
what direction it wants to go
in. yes the motor figures out
which way to go. it can go either
direction and the motor figures it out
by amp draw resistance. all
right it should ramp up now
and this motor might do this every time you
power it off. so if you run across one of these
don't flip out
when it does
it. my amp draw
if you can't see it
is at 1.5 and that's
with the panel
off. i'm gonna move
this to five just
to measure
the amp draw. with the
panel off we're at 3.13.
I'm going to put that back on too.
Fan to auto.
System to cool.
There we go.
Let's check it outside.
I have photos
of this.
Notes and notes.
Photo.
I'm using Jobber and I'm
uploading these photos
straight to notes.
It'll be attached to invoices and to this customer.
If I need to work up a quote for this customer,
I already know and I have forgotten what size it is.
I already have these stored.
And right now we're
just checking
pressures.
This
is a
410
system.
Let's
see
what
we
got.
I'm gonna take that and run.
This job like
to whoop me.
Well, that's it for this one.
They like to warn me.
If y'all like videos like this,
repair videos, real world repairs, no AI,
give me a like and subscribe.
Those things really do help.
Check out my store in the corner.
And I've got some links in the description
for Jobber and ACIQ.
If you're interested in either one of those,
Jobber's a great CRM.
I just happened to show that to you.
Check out the links in the description.
I'll catch you
on the next
one.
Well, this one is finally done.
If y'all like videos like this, repairs, HVAC stuff,
real world, no AA, hey, what?