I have a six year old carrier high wall split air conditioner that is displaying a code four (runs for 20 minutes then shuts down wall unit green light keeps flashing 4 times. if you switch off then on the circut breaker the unit cycles up and runs for another 20 minutes then the process needs to be repeated
Heating & Cooling - Carrier - 38CKC042 Air Conditioner
Answers & Comments
Might be dirty coil so unit is shutting off on high head pressure. Clean coil