Daikin E607

Alarm Logic	E607 Sheet key (key pad) contact point failure
Possible Causes	Display board short circuit / CPU board short circuit
Trouble Shooting	Check connectors CN31 and CN32 on Display board (EC3) for proper connection or broken wire Check connector CN41 on CPU board (EC1) for proper connection or broken wire Check connector pins and secure socket correctly Replace the sheet key if the alarm still occures
Controller Action	E607 Alarm display only