Daikin E405 (DCHS)~E406 (SGS)~E407 (EIS) E409 (EOS)~E411 (AMBS)

Alarm Logic	E405 Discharge gas temperature sensor (DCHS) is not functioning correctly E406 Suction gas temperature sensor (SGS) is not functioning correctly E407 Evaporator inlet pipe temperature sensor (EIS) is not functioning correctly E409 Evaporator outlet pipe temperature sensor (EOS) is not functioning correctly E411 Ambient temperature sensor (AMBS) is not functioning correctly
Possible Causes	Device malfunction Sensor failure / Controller failure / Broken wire / Connector disconnected / short circuit
Trouble Shooting	1. Check connector CN43 and make sure it is properly installed	1. Proceed to the next step if the alarm still occurs
	2. Remove CN43 connector and check sensor resistance	2. Sensor is functioning if it matches the resistance and temperature sensor characteristics table (refer to pages 6-2 and 6-3)
Controller Action	E405 Alarm display only E406 Backup operation (refer to pages 5-40 and 5-41) E407 Backup operation (refer to pages 5-40 and 5-41) E409 Backup operation (refer to pages 5-40 and 5-41) E411 Alarm display only