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Old 04-20-15, 04:08 PM   #81
ctgottapee
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Originally Posted by Xringer View Post
I wonder what my fan looks like. Seems like it's the fan motor is making the whining noise.
It's still working fine, so I'm not sure that I even want to pull the cover off.. Not yet.
.
If its mounted up high per norm, shine a flashlight up and into the bottom exhaust and you should see the scroll blades easily (the bottom half at least). The fan pulls air through the coils so there is no obstruction between it and the exit exhaust.

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Old 04-20-15, 05:36 PM   #82
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I made a mistake and put an old toothbrush up there on the part (spinning) that I could
see with my flashlight..
Face full of dirt! Yikes! Well, it's been up there running for about five years..

I'll have to kill the power with the vent doors open, so I can see the blades at rest.
They must be pretty dirty by now.
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Old 04-20-15, 09:56 PM   #83
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I made a mistake and put an old toothbrush up there on the part (spinning) that I could
see with my flashlight..
Face full of dirt! Yikes! Well, it's been up there running for about five years..

I'll have to kill the power with the vent doors open, so I can see the blades at rest.
They must be pretty dirty by now.

Let me know if you find a clever way to easily clean them.
My wire grid has horizontal bars (to shift the airflow three separate ways) so a toothbrush would take time. I tried can air but the gunk is pretty well stuck and coated on there.

The coil cleaner is a type that just dissipates through the condensate drain, but it doesn't really seem to touch the scroll fins. I tried dumping hot water through it - just pour it on top - as the condensate pan will catch it, but it must be rather shallow and the tubing is restrictive so you can't really soak it with force before it overflows.

I've been trying to work borrowing a small air compressor I can bring inside figuring that should have enough power to go at it.


They make a separate coil cleaner for the outside radiator, but I'm not sure how much better it is than say Lime Away or similar and a good power washer.
I ended up finding both cleaners in my local big box store, although the help didn't know they had them or much of what I was looking for. Online shipping and single item sizes made online ordering prohibitive.
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Old 04-21-15, 09:34 AM   #84
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Default The indoor coils aren't very dirty

I'll check into cleaning that long squirrel cage fan this summer.
I'm thinking of removing the indoor unit's cover and pulling out the motor.
Maybe the motor can be replaced at a reasonable cost or just cleaned up and lubed.
If the hi-pitched noise isn't coming from the bearings, it's probably the coils acting like a speaker.
That might be fixable with an infusion of glue..

The reason for the dirt build-up is because of water mist inside the unit
during the summer. I've seen brownish water marks, where dirty water
dripped down on the exhaust slot. So, there is mist (sometimes) flying
around inside the fan area. (Water + pollen and dirt= brown cake).


When the spring comes, my 1st goal (If I get over this norovirus) is to find some cleaner for the outdoor coil..
I would never try to use our power washer on the outdoor unit..
To much power. It can turn hardwood decking into shredded pulp.
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Old 04-21-15, 11:14 AM   #85
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Johnstone Supply sells cleaners for both the indoor and the outdoor units . As does W W Granger .

They also sell a " bib " to attach to the indoor unit while cleaning it .

God bless
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Old 04-21-15, 06:56 PM   #86
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Johnstone Supply sells cleaners for both the indoor and the outdoor units . As does W W Granger .

They also sell a " bib " to attach to the indoor unit while cleaning it .

God bless
Wyr
That's a great find. Googling shows some youtube videos where some models have easy access to clean the wheel. Of course my Fuji doesn't; takes full disassembly...
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Old 04-21-15, 07:43 PM   #87
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I will second the nice find.



SpeedClean LLC: Mini-Split Cleaning System | 2013-12-02 | ACHRNEWS

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Old 09-23-15, 07:03 PM   #88
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Default Update

Had a failure a few weeks ago on a really hot day..
The 240VAC-to-12VDC power supply died after main power had been cycled.
I was able to replace it in about 20 minutes and got the unit back up.
The 12VDC supply is used to power my DIY 10A over-current shut-off circuit.

I took the case apart (two small screws) and found some swollen capacitors,
and a bad solder connection (It was open) on one of the AC plug lugs.
(made in China).
The flat cover of the case had cracks in it. Like maybe it didn't like warm inside the box and -2 deg F on the outside of the box.?.
Or maybe it was just the summer's heat?
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Old 09-23-15, 07:21 PM   #89
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Electrolytics?
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Old 09-23-15, 07:24 PM   #90
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Default Getting ready for more Arctic Vortex Warming.?.

Arctic Vortex and 6 feet of snow again this year? Maybe..
Since I'm old (about to turn 70) and beat up, I'm sure I'll be cleaning snow off the roofs again this year..
Last winter (2014-2015), we had so much snow and ice on the roofs,
my #2 Sanyo took a beating when the snow slid off the roof and landed on the flimsy Coroplas shield..

I made a strong frame out of 1.5" s40 PVC, using the same design that I used for the snow shed over Sanyo #1.
But, this one has a steep roof.
Bolted on some PT 2x4s to mount the roofing on..
I wanted to try 'steel', but ended up using very thin tin and a lot of over-lap.
This is my first tin roof, and it came out ugly.. But if it works.?.

I'm pretty sure that falling ice is really going to dent the heck out of the tin..
So, I'm going to use it this winter and maybe get some 3/4 plywood next summer.
(I just got some 53" roof racks, so I can now haul 4x8 plywood)..

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