Difference between Caution State, Warning State & Error State

[SmarthomeBot]

Dear all,

1) Does anyone know what the difference is between following 3 states.

**

In my setup I have following 3 AC units:

Every now & then the system throws me following error and always & only on the same unit.

After 10 minutes (default polling time) the error gets cleared

I'm trying to understand why these error logs (UO-00 - low refrigerant) always show up on only one unit.

2) If the whole system is low on refrigerant, why no errors are showing on the other two devices?

I know it might not entirely related to this integration and something might be wrong with my equipment. A technician will come & check it next tuesday.

If anyone has the magic answer to the bold questions, you are my hero of the day.

Thank you!

Edit 1:

I already found one part of my answers in the API documention:

However it still doesn't explain what Caution State is and why the error still only occurs on one unit

[eupesco]

I have the same problem with U0-00 on only one unit. Did the technician find anything? Do your units have a problem with low refrigerant?

[SmarthomeBot]

The technician is coming tomorrow to check. I could trigger the U0-00 error on the other indoors units too by cranking up the heating on all units at the same time on high leve. Please see if you get the error on the other devices too. I'll keep you posted about the technician's findings.

[SmarthomeBot]

It's postponed until Friday because of bad weather

[eupesco]

Any news?

[SmarthomeBot]

The pos installer has postponed the repair under warranty and is being very dodgy. As soon as I have news I'll write an update.

I would sincerely recommend to have also your system checked.