Daikin L5

[jjrbus]

With an L5 error code and not much knowledge, finding little on the net, I was kinda dead in the water. I suspected it was the PC board, but could not verify a bad PC. I have 2 Daikin 9K btu 15 series units and thought why not swap the PC boards! It took a while to get around to doing it and the weather has been cool but the problem followed the board!

Or do I have a new problem in this mini, nah, can't be. LOL

 

[slowtwitch73]

One of our Daikins just threw a U4 (I think) code... can't communicate with main unit. Weve barely used it.

Are these things problematic?

 

[American Locomotive]

This is probably the 3rd or 4th thread I've seen in ~2 months about Daikin minispilts being problematic.

 

[jjrbus]

Daikin is #3 in the US, they sell millions of units a year. We only see the people here who have problems! I have had issues with 2 of my 3 Daikins so looking at a 66% failure rate!

Daikin is as good as the others, what I have an issue with is the incompetant, scumbag AC ripoff people who infest the industry. If you find a good tech, treat em right, send Xmas cards, compliment their kids, buy them lunch.

 

[fitter30]

DC output over current
There are some YouTube videos on L 5 code

 

[jjrbus]

Someday I will get back to this and today is some day. I am 99.5% sure I have a bad PC board. A web search shows that no new boards for the RXN09NMVJU only used are available. Not buying used.

Ordered a new board from selling dealer $275 + $42 shipping. Board is under warranty, by time I get Daikin tech here and replace board would be hundreds of dollars.

 

[Aileron]

Daiken has a service app for the smart phones.

 

[jjrbus]

Daiken has a service app for the smart phones.

A service app? I looked and do not see it anyplace, control apps, not service.

 

[Aileron]

A service app? I looked and do not see it anyplace, control apps, not service.

‎Daikin Service

‎The Daikin Service Application has been launched by Daikin Airconditioning UK to support service engineers in the air conditioning industry working with Daikin VRV, Daikin Altherma and Daikin Split and Sky Air Equipment. The application covers various functions to help field engineers to fault...

apps.apple.com

‎Daikin Tech Hub

‎Daikin Tech Hub supports service contractors working with Daikin products. It provides all Daikin technical and service information directly at your fingertips. The Daikin Tech Hub mobile application is launched by Daikin North America LLC to support Daikin dealers and service contractors...

apps.apple.com

Im not sure if you actually need the login.

 

[jjrbus]

One thing leads to another, I have been toying with this unit for months. I really am in waaay over my pay grade here. I have 3 in the house so 1 not working is not a big deal. I have the new board in hand and will likely get to it this afternoon. I looked over the old board and see nothing obviously wrong with it. Learned something new, heat transfer grease/compound that needs to be used.