Air Conditioning E4 fault failure

Diagnosing an E4 fault in an air conditioning system. This is my diagnosis of my daughter's LG model LP0910WNR portable A/C unit. Same as the Goldstar but can possibly be used to diagnose many systems out there. Beit roll around like this one, window units and maybe even some permanent mount systems.
Amazon link for the sensor. I purchased a 2 pack. www.amazon.com/dp/B07LGJ5QLY?...

[@chuckstetler8200]

Nicely explained... I`m seeing an occasional E4 fault. system will reset with an on/off cycle. I`m going to clean and blow out system and vents as you described... Thank you for you expertise.😁

[@bobamos3628]

This one will show an E4 on occasion but it automatically clears and starts cooling again. The time it waits to start cooling is about the same as the normal off cycle. We decided that as long as it comes back on that we would just leave it. It's not always there but sometimes and never stays off. So, if yours will eventually come back on by itself it may be just fine as is. Our original fault was an E4 and it never would restart until we cycled it on and off.. That sensor is the weak link on many AC units like this. Thanks for the compliment.

[@rogernichols8150]

Thanks Bob 😊...I'm going to look at mine today I'm one that likes to work on things and not to just put it in the landfill if all possible 😀..thank you again for the help 😀 😊

[@bobamos3628]

Glad that the video was helpful.

[@OregonOutbackRanch5629]

Thank You Bob! Excellent presentation and explanation, in laymen terms , of the thermister replacement and safety precautions. A year old and replacing parts already on my split system...... Where did the quality in workmanship go too nowadays? Rhetorical question 😉

[@bobamos3628]

Thanks for the compliment. I do try to keep it at a level that can be understood. I used to reach auto mechanics at the dealer level whe I worked for Chrysler Corp. dealerships and could see the student's eyes glaze over when I had lost them. It is a little tougher on line as I can't see if the reader is following my example or if they are lost. Quality? Where did it go? Ya know, these companies will keep cheapening items to boost their profit margins and keep doing it until their products no longer work or last. Then they just keep it like that. Sort of the Peterson principle in reverse, where someone rises withing the company until they reach the level where they no longer are capable of doing that job. Then they stay there contributing nothing. Anyway, thank for the response.

[@jollyscaria1922]

Out door not comtacter woring power fstfil error shpwigo

[@handylandy4930]

How do I know which sensor ohm range I should have. Mine is a Arcticpro Portable AC with a E4 code evap freeze up. I looked for replacement thermistors and there are a few different ranges 5k, 10k, 15k I'm not sure which one to start with. Coil is not freezing up though, I even pulled the sensor off the evap tube and still has E4 code

[@bobamos3628]

Yes, I know what you are going through. I did this repair quite some time ago so I am a bit fuzzy on where I found the actual information. But, to find it I generally searched some diagnostics for other refrigerant units in the particular company's product line. Most, but not all, companies generally use the same valued parts when they are interchangable. I found a diagnostic video for this company's store refrigerator and the guy was using the value that I used in this video for the repair. You will just have to do some research to find the value for your particular unit. Thanks for the comment.

[@rhiannon661]

Thank you you save me hundreds of dollars

[@bobamos3628]

Gee, so happy to hear that... It has been a while since I did this video and my daughter said that the A/C is still working. She does get an E4 code at times but it goes away and cools without failing. So, if your E4 code pops up, I would not worry as long as the unit continues to cool. Replacing the mother board is more expensive than replacing the unit. If you could even find the board. Hey, it's an air conditioner and as long as it cools you are fine. Thanks for the comment.

[@dennismiller403]

I'm in heat mode.There are two water outlets,one at bottom of appliance and one half way up ,which one is for heating?

[@bobamos3628]

Couldn't tell you as this is an Air Conditioner only unit.

[@aprilwilliams3532]

How do I fix E4 code on the new black and decker standing portable ac/heater.

[@bobamos3628]

I really do not know. Is the E4 code the same on their products? If so, I would proceed the same as I did on this. Some companies have their own coding and not knowing if B&D use the same codes I could be sending you in the wrong direction. Wish that I could give you a better answer. While I am an AC specialist, my experience is mostly in the automotive field. I just apply my knowledge of AC systems to whatever I am working on and research how their systems are set up to work.

[@reinaldogarcia5335]

where do you get the ambient air sensor,,,

[@bobamos3628]

It was the evap temp sensor and here is a link. Worked perfectly. Hope that this help you. www.amazon.com/gp/product/B07LGJ5QLY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

[@nicholasskellinger6329]

I have an Ocean Breeze AC an it’s saying E4 so can u let me know what that means?

[@bobamos3628]

Here is a link to a thread on the Ocean Breeze AC unit with code E4. Each company may or may not use the same code system. www.fixya.com/support/t18635743-ocean_breeze_air_conditioner

[@anmolsingh9252]

How can I fix error code lc

[@bobamos3628]

Hi, For A/C units, this code generally refers to an outside coil temperature thermistor reading too high. I would start by looking for the actual temperature of that coil. The condenser coil is the one that gets warm while in operation. Make sure that it is clean and clear of dirt and any other obstructions. Air must flow through it to cool down the unit. It is the heat exchanger portion of the air conditioner. If you have a pyrometer, you might want to test it for its temperature. On you unit I do not have the specs of how hot it should be so Google it for specs. If it is not outside the temperature range, I would suspect the thermistor to be faulty. Hope this is helpful.

[@anmolsingh9252]

@@bobamos3628 thanks for the info