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Old 03-30-2020, 01:04 PM   #16
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Re: Generic Icing Question..


Quote:
Originally Posted by roughneck View Post
That appears to be the evaporator.
Youíll need to get the refrigeration system checked. It should not be frosting.
Doing so can cause compressor damage or even failure.
Hokay.. Onward and Onward.. :D Thanx
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Old 04-21-2020, 01:07 PM   #17
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Re: Generic Icing Question..


Any updates on your system or the problem?
Ever have anyone out to take a look?
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Old 05-03-2020, 01:40 PM   #18
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Re: Generic Icing Question..


OK, trying a new thermostat..

The old one (Honeywell) is set up THUS:

S
S
Y------- Yellow Wire
Y2
G------- Green Wire
C
U
U
A
(blank)- Blue Wire
W2----- White Wire
(blank)
W
K
R------- Red Wire
Rc


I set up the new thermostat (Braeburn) thus:

Rh------ Red Wire
Rc
Y1------ Yellow Wire
G------- Green Wire
W1----- White Wire
(blank)
O
B------- Blue Wire
C


Heat works fine... AC doesn't come on at all. I hear a click from the thermostat and a hum from the AC unit.. But nothing else.. Not even the fan...

Wire xfer good???
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Old 05-03-2020, 02:03 PM   #19
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Re: Generic Icing Question..


Why are you trying a new thermostat?
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Old 05-03-2020, 02:08 PM   #20
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Re: Generic Icing Question..


It's the only replaceable part I haven't replaced..

Still getting the icing issue..
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Old 05-03-2020, 02:14 PM   #21
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Re: Generic Icing Question..


No, please stop. Your replacing random parts trying to solve an issue you haven’t diagnosed. I told you before a tech should check refrigerant charge. But apparently you took that as a tip to replace whatever you can replace.
Now you’ve caused a separate problem with your wiring.
Your thermostat isn’t wired right.
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Old 05-03-2020, 02:19 PM   #22
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Re: Generic Icing Question..


Any chance ya could tell me how it should be wired?? :D

I can't afford a tech and couldn't get one to come out even if I could.. I am under quarantined...
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Old 05-03-2020, 02:27 PM   #23
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Re: Generic Icing Question..


Tell me this.
How can you afford to buy every replaceable part in the unit but not afford a tech?
This isn’t the way to solve problems. Now you’ve dug yourself a deeper hole by causing more issues.
Your thermostat isn’t causing your unit to freeze.
The proper wiring will be in the installation manual.
HVAC is essential. We are all still working and not in quarantine.
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Old 05-03-2020, 02:40 PM   #24
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Re: Generic Icing Question..


Quote:
Originally Posted by roughneck View Post

This isnít the way to solve problems.
Kinda defeats the purpose of the this forum, eh?? :D

I mean, if the only advice is to "Hire A Tech", no one needs a forum to do that.. :D

Thanx anyways... I'll play with it some more....
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Old 05-03-2020, 02:48 PM   #25
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Re: Generic Icing Question..


We didn’t tell you to hire a tech.
To be honest at first you didn’t even know what kind of unit you had.
We suggested you hire a tech after it became very clear you were struggling and probably was going to have trouble figuring out the problem.
Problems are NOT diagnosed by replacing random parts. But you’ve now learned that the hard way.
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Old 05-03-2020, 05:59 PM   #26
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Re: Generic Icing Question..


Your system has a refrigerant flow problem. It is starving the evaporator down to the point of frosting the distributor tubing. My best guess would be lack of refrigerant (also means a leak needs repaired). The next possibility would be a restricted metering device which rarely happens. Neither of these conditions can be fixed as a DIY project.

You can't fix a refrigerant flow problem by replacing unrelated electrical components. I understand that you don't want it to be some easy fix and feel like you wasted your money on a tech, but trust me, you can't fix this type of problem.

You will need the services of a competent HVAC service person.
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Old 05-03-2020, 08:08 PM   #27
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Re: Generic Icing Question..


The tools needed to fix this problem yourself can cost well over $1000. Not to mention learning the theory and practice-brazing so you don't goof up when trying to repair.

I can tell you based on the pics, it's a refrigeration problem, considering it's freezing starting at the metering device.

If you can't afford a proper repair right now, get a used window unit and cool one room to get relief.
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I am not in the business of any trade I give advice on. I have non-professional hvac experience + good knowledge of theory. Attempt repairs at your own risk. Never jump out safeties - especially pressure switches - on a furnace for testing with fuel supply on; use a meter. Do not troubleshoot with live line voltage present unless there's no alternative.
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