My tcl sit system has stopped working, it's showing no error codes because it's not showing anything at all on the display, it's like it has no power at all. When not in use it normally has a red light, it doesn't have this either at the moment, any ideas, our house is like a sauna!

E15 error code indicates that there is water sitting in the base of the dishwasher.
Most common reasons:

• malfunction of the water drainage sensor when the aqua-stop worked
• the system is clogged

http://acerrorcode.com/tcl-air-conditioner-error-codes.html

This was googled: waves error codes
It showed a page in "images". Stated
"System abnormity" I think. Page was blurry.
Call a tech! Mini splits can be a troubleshooting nightmare! I think its a Fujitsu unit. It would help, and may save you some $$, to call around to find a technician who has worked on mini splits. And maybe find them a 1-800 # that is their tech support # before hand, so if the tech needs it, you have it. E4 is a vague description for a fault. Make sure you have cleaned air filters, cleaned o.d.coil (turn off power at breaker 1st). Changed batteries in remote. Work safe!

How to rectify E2 error in tcl split ac

http://www.fixya.com/support/t5021286-tcl_error_message_eo_e5

I have the same problem..but i fixed that. if u have the same type with mine; TCL split type ac, TAC-42CF/A,380V 3N~. Then u can try this.
1. open indoor panel.
2. find 2 cable in socket pcb that is p11 And P12, u plug p12 on p11,and p11 on p12.
3. if not solved, try the same just like point 2 on power suply 3phase cable R.S.T try S to R, or else.
4. hopefully ur problem solved.

The F4 code means : The Louver Motor/Cross Flow Fan/ Ground Wire Problems.

BSOD - blue screen of death....sorry mate but its seems that a fatal error on your operating system occured....most probably a sure way to fix this is to re-install windows, and lose everything on the hard drive...

I have the same problem with my TCL unit. I have had the Tech out to day and I am told it is an internal senor in the unit that fails. I am informed by the tech that this is a very common fault with the TCL unit. Also if you live in Australia like me prepare yourself for a fight with TCL due to them not liking to honour the 5 year warranty. I would not recommend this product to anyone

this error comes from fuser unit u have to change fuser unit

Interesting problem, especially since its been happening since the car was new. Researching this I found one suggestion that a front wheel bearing is in backwards, and this causes the ABS wheel sensor to read incorrectly until the TCL/ABS computers calibrate themselves.

This is an odd suggestion, as the wheel bearing and hub are an integral assembly. A part photo shows a "normal" looking bearing that only fits one way. A bearing installation problem is not impossible however. There could be dirt/road debris on the sensor, the sensor could be slightly misplaced, or faulty. The TCL/ABS computers read the signals from the wheel sensors, and has diagnostic outputs, which should include indications of poor or missing data streams from all four wheel sensors.

This is the first step to finding a solution. If the TCL/ABS computers are reporting errors from one wheel, then that wheel has to be disassembled to see what's the cause.