I can't cancel the timer of my split type Carrier air conditioner inverter series.

You have a code that doesn't exist

http://errorcodeairconditioning.blogspot.com/2021/12/koppel-air-conditioner-error-codes.html

https://www.google.com/search?q=Koppel+Super+inverter+split+type+Air+Conditioner.+It+has+a+P9+error+code

..

Error Code Definition: (Unit Size 36K - 42K) = IPM over temperature protection. Carrier AC Indoor Unit Displays Error Code: P9. Error Code Definition: (Unit Size 18K - 24K - 30K) = NA. Error Code Definition: (Unit Size 36K - 42K) = Open Contactor.
https://removeandreplace.com/2017/08/11/carrier-split-system-air-conditioner-error-codes-and-troubleshooting/

https://www.youtube.com/watch?v=M-fLGOYL84Y

Download the service manual and get the fault code to interpret ... probably going to need an AC engineer.

Carrier Split Air Conditioner Error Codes - AC Error Code

acerrorcode.com/carrier-split-air-conditioner-error-codes.html

Jan 25, 2015 - REMOTE CONTROLLER FOR AIR CONDITIONER (SPLIT TYPE). Carrier Split Air Conditioner Error Codes. 00-01-02-03. 11-12-04-05.

is ththis a package unit or residential split system?

50TJ-012 is the modewl of 12,000BTU. That is 1 TR. Thanks,

Reset breaker! Move to off then to on in your breaker panel box that provides supply power to the unit!

It indicates afault within the unit. Give Carrier a call and get it serviced.
Mat

Hi

Try to reset the unit by disconnecting the power supply for 10sec. and operate the unit. If it wont work replace your Room Air and Coil Thersmistor or test the thersmistor with mulitester. The resistance reading of thermistor is 10 kilo ohms @25deg. C room temp. If it is shorted or open the unit wont operate.

Hope this can help :)

too little,information, too late!