What do the error codes EH00, EH60, and EH0b mean on the display?

EH00 indicates an internal memory chip failure, EH60 means the indoor ambient temperature sensor is open or short circuited, and EH0b means there is a communication malfunction of the main control board. The error code will alternate on the display in 1-second intervals (e.g., 'EH' for one second, then '00' for one second) until the issue is resolved. You should contact your Authorized Frigidaire Service Center when any of these codes appear. (Page 19)