lg air conditioner CH 04 ERROR
#1
09-01-18, 12:21 PM
lg air conditioner CH 04 ERROR
So, I been searching for days. In our apartment we have a wall unit LP123HD3A model (LG). Today the CH 04 code started flashing. I did some research and found this:
http://www.orionair.co.uk/PDF/lg%20m...lt%20codes.pdf
Problem is I cannot locate where the pump is at, and all videos I found, oddly enough, are NOT in english. Anyone here can simplify this, or just shoot me in the right direction (I live on site - and of course it is our AC that goes out LOL)
Cheers Thanks!!
http://www.orionair.co.uk/PDF/lg%20m...lt%20codes.pdf
Problem is I cannot locate where the pump is at, and all videos I found, oddly enough, are NOT in english. Anyone here can simplify this, or just shoot me in the right direction (I live on site - and of course it is our AC that goes out LOL)
Cheers Thanks!!
#2
09-01-18, 12:50 PM
Group Moderator
You may not have a pump. Does the unit drain to somewhere lower where you can see it coming out ?
The pump is used when the water needs to be pumped up and away from the unit.
That looks for the most part like a PTAC unit although I see references to a window unit.
Your unit is completely self contained..... correct ?
It looks like this manual is very similar to what you have. Download the manual and check it out.
manualslib/manual/689421/Lg-Lp123cd3a.html#product-LP123HD3A
The pump is used when the water needs to be pumped up and away from the unit.
That looks for the most part like a PTAC unit although I see references to a window unit.
Your unit is completely self contained..... correct ?
It looks like this manual is very similar to what you have. Download the manual and check it out.
manualslib/manual/689421/Lg-Lp123cd3a.html#product-LP123HD3A
#5
09-01-18, 06:59 PM
So, curious, what is so taboo about ch 04, I noticed using different search methods, that error code is hard to find. The only other symptom I could find is that it was clicking to running normally to ch 04 and back for about 30 seconds, then the system just shut down and just flashes ch 04
thanks.. i'll keep looking, if I find someting I'll post it here
thanks.. i'll keep looking, if I find someting I'll post it here
#6
09-01-18, 07:23 PM
Group Moderator
#8
09-03-18, 01:14 PM
OK, found this on LG suport. But doesn't make sense, sounds like a simple fix (btw, AC unit is dry as a bone) I reset it, I shut the power off and on, and can do nothing, just flashes CH 04, cannot do anything with the buttons
[small]
Fault Code 04Fault code CH04 indicates that the float switch of the fan coil has risen.On fan coils without a drain pump it indicates that the jumper (blue plug with 30mm of blue wire) in terminalCN FLOAT is missing.If the fan coil is running and the float rises it will take 3 ½ minutes for the fault to show on the controller, this isto give the unit time to pump excess water away. Once the float falls, (or the jumper is put back into the board)it will not be possible to clear the fault for 40 seconds. It is considered good practice to reset the power toclear this fault code
[/small]
#10
09-07-18, 07:07 PM
Group Moderator
Sorry..... I went thru every schematic I could find and for some reason there is no place for a float or pump to be plugged in.
CN-float should be a two pin connector.
This link is the actual LG service manual. It shows a pump as connecting to the main board on the yellow ICR connector. It also gives a different description of a CH04 fault.
http://www.lgdfs.ca/en/ptac-resource...35.pdf&id=1665
CN-float should be a two pin connector.
This link is the actual LG service manual. It shows a pump as connecting to the main board on the yellow ICR connector. It also gives a different description of a CH04 fault.
http://www.lgdfs.ca/en/ptac-resource...35.pdf&id=1665
Last edited by PJmax; 09-08-18 at 09:10 PM. Reason: repaired link
#11
09-08-18, 08:06 AM
Hi Pj. I appreciate you looking, I have vast internet skills and even I am having difficulties with this one. so again, thank you.
just a note that link is bad.. your missing part of the beginning
was able to decipher the link and found one here
http://www.prattco.com/pdf/Air%20Conditioners/PTAC.pdf
just a note that link is bad.. your missing part of the beginning
was able to decipher the link and found one here
http://www.prattco.com/pdf/Air%20Conditioners/PTAC.pdf
#12
09-08-18, 08:15 AM
O here is a much better one. I am not good at the HVAC as mentioned before,
on page 55/99 says the error code is Outdoor Coil Thermistor error
Is that fixable by me, or does this require a tech with tools and parts?
http://www.mediafire.com/file/wsd1jh...54711.pdf/file
on page 55/99 says the error code is Outdoor Coil Thermistor error
Is that fixable by me, or does this require a tech with tools and parts?
http://www.mediafire.com/file/wsd1jh...54711.pdf/file
#13
09-08-18, 08:57 AM
Ok, getting closer it's basically one of the wires either the one by the evaporator, or the one on the copper tubing. Easy to replace and cheap. I'll keep updating here as I get this figured out (price range: $12 - $18)
The only thing I cannot find is the ohms and if it is a positive or negative coefficient
The only thing I cannot find is the ohms and if it is a positive or negative coefficient
#14
09-08-18, 09:37 PM
Group Moderator
Repaired service manual link in my previous post.
Here's a parts breakout with parts numbers...... searspartsdirect/lp123hd3a/3204/0904115.html
Here's a parts breakout with parts numbers...... searspartsdirect/lp123hd3a/3204/0904115.html
