HomeForumsDaikinFault CodesDaikin E1 Error Code This topic is empty. Viewing 1 post (of 1 total) Author Posts July 7, 2024 at 1:54 pm #1080 TheAChubKeymaster Premium PCB Abnormality Error Code E1 Applicable Models REYQ-T Method of Error Detection Abnormality is detected under the communication conditions in the hardware section between the indoor unit and outdoor unit. Error Decision Conditions When the communication conditions in the hardware section between the indoor unit and the outdoor unit are not normal Supposed Causes Defective outdoor unit PCB (A1P) Defective connection communication line between indoor and outdoor units Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In