Daikin EWAD650BJYNN/Q [261/346] Overview of safeties

ESIE07-04 Overview of Fault Indications and Safeties

Part 3 – Troubleshooting 3–5

1.3 Overview of Safeties

The following table shows the list of possible alarms with the identifier number, the cause and the reset

type (A = auto, M = manual).

Alarm Alarm cause Reset

001 Phase monitor Intervention of the device control of phases. The phases are not

correctly sequenced or the supply voltage is out of acceptable limits.

002 Freeze alarm Anti-freeze protection. The outlet water temperature is equal to the

anti-freeze value.

005 Evaporator Flow Alarm Intervention of Evaporator Flow switch. The water pump could be off. M

006 Low pressure alarm (transducer) Low pressure intervention by microchip M

007 High discharge temperature alarm

(temperature switch)

Intervention of the discharge temperature switch M

008 Fault transition Starting procedure is not complete. Verify the contactors. M

009 Low oil pressure The oil pressure is not enough for the correct lubrication of

compressor. Verify if the condensing pressure is at least 3 times the

suction pressure.

011 High oil pressure difference High oil differential pressure. The oil filter could be dirty or the

solenoid valve doesn’t work correctly.

012 High pressure alarm (pressure switch) Intervention of the high pressure mechanical switch M

016 Compressor overload Intervention of the compressor thermal motor or intervention of the

high temperature switch

023 High pressure alarm (transducer) Intervention high pressure by microchip M

030 B1 probe fault or not connected Sensor B1 error M

031 B2 probe fault or not connected Sensor B2 error M

032 B3 probe fault or not connected Sensor B3 error M

033 B4 probe fault or not connected Sensor B4 error M

034 B5 probe fault or not connected Sensor B5 error M

035 B6 probe fault or not connected Sensor B6 error M

036 B7 probe fault or not connected Sensor B7 error M

037 B8 probe fault or not connected Sensor B8 error M

039 Evaporator pump maintenance Request of evaporator pump maintenance M

040 Condenser pump maintenance Request of condenser pump maintenance M

041 Compressor maintenance Request of compressor maintenance M

050 Unit 1 offline Compressor # 1 network error A

051 Unit 2 offline Compressor # 2 network error A

052 Unit 3 offline Compressor # 3 network error A

053 Unit 4 offline Compressor # 4 network error A

D01 EXV Driver Probe fault Driver EXV probe error A

D02 EXV Step motor error EXV valve motor error A